CINXE.COM
Enzyme Commission number - Wikipedia
<!DOCTYPE html> <html class="client-nojs vector-feature-language-in-header-enabled vector-feature-language-in-main-page-header-disabled vector-feature-sticky-header-disabled vector-feature-page-tools-pinned-disabled vector-feature-toc-pinned-clientpref-1 vector-feature-main-menu-pinned-disabled vector-feature-limited-width-clientpref-1 vector-feature-limited-width-content-enabled vector-feature-custom-font-size-clientpref-1 vector-feature-appearance-pinned-clientpref-1 vector-feature-night-mode-enabled skin-theme-clientpref-day vector-toc-available" lang="en" dir="ltr"> <head> <meta charset="UTF-8"> <title>Enzyme Commission number - Wikipedia</title> <script>(function(){var className="client-js vector-feature-language-in-header-enabled vector-feature-language-in-main-page-header-disabled vector-feature-sticky-header-disabled vector-feature-page-tools-pinned-disabled vector-feature-toc-pinned-clientpref-1 vector-feature-main-menu-pinned-disabled vector-feature-limited-width-clientpref-1 vector-feature-limited-width-content-enabled vector-feature-custom-font-size-clientpref-1 vector-feature-appearance-pinned-clientpref-1 vector-feature-night-mode-enabled skin-theme-clientpref-day vector-toc-available";var cookie=document.cookie.match(/(?:^|; )enwikimwclientpreferences=([^;]+)/);if(cookie){cookie[1].split('%2C').forEach(function(pref){className=className.replace(new RegExp('(^| )'+pref.replace(/-clientpref-\w+$|[^\w-]+/g,'')+'-clientpref-\\w+( |$)'),'$1'+pref+'$2');});}document.documentElement.className=className;}());RLCONF={"wgBreakFrames":false,"wgSeparatorTransformTable":["",""],"wgDigitTransformTable":["",""],"wgDefaultDateFormat":"dmy", "wgMonthNames":["","January","February","March","April","May","June","July","August","September","October","November","December"],"wgRequestId":"3047343f-4f04-4971-860b-176716851375","wgCanonicalNamespace":"","wgCanonicalSpecialPageName":false,"wgNamespaceNumber":0,"wgPageName":"Enzyme_Commission_number","wgTitle":"Enzyme Commission number","wgCurRevisionId":1233499650,"wgRevisionId":1233499650,"wgArticleId":194690,"wgIsArticle":true,"wgIsRedirect":false,"wgAction":"view","wgUserName":null,"wgUserGroups":["*"],"wgCategories":["Articles with short description","Short description is different from Wikidata","Webarchive template wayback links","Enzymes by function","Bioinformatics","Cheminformatics","Chemical numbering schemes"],"wgPageViewLanguage":"en","wgPageContentLanguage":"en","wgPageContentModel":"wikitext","wgRelevantPageName":"Enzyme_Commission_number","wgRelevantArticleId":194690,"wgIsProbablyEditable":true,"wgRelevantPageIsProbablyEditable":true,"wgRestrictionEdit":[], "wgRestrictionMove":[],"wgNoticeProject":"wikipedia","wgCiteReferencePreviewsActive":false,"wgFlaggedRevsParams":{"tags":{"status":{"levels":1}}},"wgMediaViewerOnClick":true,"wgMediaViewerEnabledByDefault":true,"wgPopupsFlags":0,"wgVisualEditor":{"pageLanguageCode":"en","pageLanguageDir":"ltr","pageVariantFallbacks":"en"},"wgMFDisplayWikibaseDescriptions":{"search":true,"watchlist":true,"tagline":false,"nearby":true},"wgWMESchemaEditAttemptStepOversample":false,"wgWMEPageLength":10000,"wgRelatedArticlesCompat":[],"wgCentralAuthMobileDomain":false,"wgEditSubmitButtonLabelPublish":true,"wgULSPosition":"interlanguage","wgULSisCompactLinksEnabled":false,"wgVector2022LanguageInHeader":true,"wgULSisLanguageSelectorEmpty":false,"wgWikibaseItemId":"Q741108","wgCheckUserClientHintsHeadersJsApi":["brands","architecture","bitness","fullVersionList","mobile","model","platform","platformVersion"],"GEHomepageSuggestedEditsEnableTopics":true,"wgGETopicsMatchModeEnabled":false, "wgGEStructuredTaskRejectionReasonTextInputEnabled":false,"wgGELevelingUpEnabledForUser":false};RLSTATE={"ext.globalCssJs.user.styles":"ready","site.styles":"ready","user.styles":"ready","ext.globalCssJs.user":"ready","user":"ready","user.options":"loading","ext.cite.styles":"ready","skins.vector.search.codex.styles":"ready","skins.vector.styles":"ready","skins.vector.icons":"ready","jquery.makeCollapsible.styles":"ready","ext.wikimediamessages.styles":"ready","ext.visualEditor.desktopArticleTarget.noscript":"ready","ext.uls.interlanguage":"ready","wikibase.client.init":"ready","ext.wikimediaBadges":"ready"};RLPAGEMODULES=["ext.cite.ux-enhancements","site","mediawiki.page.ready","jquery.makeCollapsible","mediawiki.toc","skins.vector.js","ext.centralNotice.geoIP","ext.centralNotice.startUp","ext.gadget.ReferenceTooltips","ext.gadget.switcher","ext.urlShortener.toolbar","ext.centralauth.centralautologin","mmv.bootstrap","ext.popups","ext.visualEditor.desktopArticleTarget.init", "ext.visualEditor.targetLoader","ext.echo.centralauth","ext.eventLogging","ext.wikimediaEvents","ext.navigationTiming","ext.uls.interface","ext.cx.eventlogging.campaigns","ext.cx.uls.quick.actions","wikibase.client.vector-2022","ext.checkUser.clientHints","ext.growthExperiments.SuggestedEditSession","wikibase.sidebar.tracking"];</script> <script>(RLQ=window.RLQ||[]).push(function(){mw.loader.impl(function(){return["user.options@12s5i",function($,jQuery,require,module){mw.user.tokens.set({"patrolToken":"+\\","watchToken":"+\\","csrfToken":"+\\"}); }];});});</script> <link rel="stylesheet" href="/w/load.php?lang=en&modules=ext.cite.styles%7Cext.uls.interlanguage%7Cext.visualEditor.desktopArticleTarget.noscript%7Cext.wikimediaBadges%7Cext.wikimediamessages.styles%7Cjquery.makeCollapsible.styles%7Cskins.vector.icons%2Cstyles%7Cskins.vector.search.codex.styles%7Cwikibase.client.init&only=styles&skin=vector-2022"> <script async="" src="/w/load.php?lang=en&modules=startup&only=scripts&raw=1&skin=vector-2022"></script> <meta name="ResourceLoaderDynamicStyles" content=""> <link rel="stylesheet" href="/w/load.php?lang=en&modules=site.styles&only=styles&skin=vector-2022"> <meta name="generator" content="MediaWiki 1.44.0-wmf.4"> <meta name="referrer" content="origin"> <meta name="referrer" content="origin-when-cross-origin"> <meta name="robots" content="max-image-preview:standard"> <meta name="format-detection" content="telephone=no"> <meta name="viewport" content="width=1120"> <meta property="og:title" content="Enzyme Commission number - Wikipedia"> <meta property="og:type" content="website"> <link rel="preconnect" href="//upload.wikimedia.org"> <link rel="alternate" media="only screen and (max-width: 640px)" href="//en.m.wikipedia.org/wiki/Enzyme_Commission_number"> <link rel="alternate" type="application/x-wiki" title="Edit this page" href="/w/index.php?title=Enzyme_Commission_number&action=edit"> <link rel="apple-touch-icon" href="/static/apple-touch/wikipedia.png"> <link rel="icon" href="/static/favicon/wikipedia.ico"> <link rel="search" type="application/opensearchdescription+xml" href="/w/rest.php/v1/search" title="Wikipedia (en)"> <link rel="EditURI" type="application/rsd+xml" href="//en.wikipedia.org/w/api.php?action=rsd"> <link rel="canonical" href="https://en.wikipedia.org/wiki/Enzyme_Commission_number"> <link rel="license" href="https://creativecommons.org/licenses/by-sa/4.0/deed.en"> <link rel="alternate" type="application/atom+xml" title="Wikipedia Atom feed" href="/w/index.php?title=Special:RecentChanges&feed=atom"> <link rel="dns-prefetch" href="//meta.wikimedia.org" /> <link rel="dns-prefetch" href="//login.wikimedia.org"> </head> <body class="skin--responsive skin-vector skin-vector-search-vue mediawiki ltr sitedir-ltr mw-hide-empty-elt ns-0 ns-subject mw-editable page-Enzyme_Commission_number rootpage-Enzyme_Commission_number skin-vector-2022 action-view"><a class="mw-jump-link" href="#bodyContent">Jump to content</a> <div class="vector-header-container"> <header class="vector-header mw-header"> <div class="vector-header-start"> <nav class="vector-main-menu-landmark" aria-label="Site"> <div id="vector-main-menu-dropdown" class="vector-dropdown vector-main-menu-dropdown vector-button-flush-left vector-button-flush-right" > <input type="checkbox" id="vector-main-menu-dropdown-checkbox" role="button" aria-haspopup="true" data-event-name="ui.dropdown-vector-main-menu-dropdown" class="vector-dropdown-checkbox " aria-label="Main menu" > <label id="vector-main-menu-dropdown-label" for="vector-main-menu-dropdown-checkbox" class="vector-dropdown-label cdx-button cdx-button--fake-button cdx-button--fake-button--enabled cdx-button--weight-quiet cdx-button--icon-only " aria-hidden="true" ><span class="vector-icon mw-ui-icon-menu mw-ui-icon-wikimedia-menu"></span> <span class="vector-dropdown-label-text">Main menu</span> </label> <div class="vector-dropdown-content"> <div id="vector-main-menu-unpinned-container" class="vector-unpinned-container"> <div id="vector-main-menu" class="vector-main-menu vector-pinnable-element"> <div class="vector-pinnable-header vector-main-menu-pinnable-header vector-pinnable-header-unpinned" data-feature-name="main-menu-pinned" data-pinnable-element-id="vector-main-menu" data-pinned-container-id="vector-main-menu-pinned-container" data-unpinned-container-id="vector-main-menu-unpinned-container" > <div class="vector-pinnable-header-label">Main menu</div> <button class="vector-pinnable-header-toggle-button vector-pinnable-header-pin-button" data-event-name="pinnable-header.vector-main-menu.pin">move to sidebar</button> <button class="vector-pinnable-header-toggle-button vector-pinnable-header-unpin-button" data-event-name="pinnable-header.vector-main-menu.unpin">hide</button> </div> <div id="p-navigation" class="vector-menu mw-portlet mw-portlet-navigation" > <div class="vector-menu-heading"> Navigation </div> <div class="vector-menu-content"> <ul class="vector-menu-content-list"> <li id="n-mainpage-description" class="mw-list-item"><a href="/wiki/Main_Page" title="Visit the main page [z]" accesskey="z"><span>Main page</span></a></li><li id="n-contents" class="mw-list-item"><a href="/wiki/Wikipedia:Contents" title="Guides to browsing Wikipedia"><span>Contents</span></a></li><li id="n-currentevents" class="mw-list-item"><a href="/wiki/Portal:Current_events" title="Articles related to current events"><span>Current events</span></a></li><li id="n-randompage" class="mw-list-item"><a href="/wiki/Special:Random" title="Visit a randomly selected article [x]" accesskey="x"><span>Random article</span></a></li><li id="n-aboutsite" class="mw-list-item"><a href="/wiki/Wikipedia:About" title="Learn about Wikipedia and how it works"><span>About Wikipedia</span></a></li><li id="n-contactpage" class="mw-list-item"><a href="//en.wikipedia.org/wiki/Wikipedia:Contact_us" title="How to contact Wikipedia"><span>Contact us</span></a></li> </ul> </div> </div> <div id="p-interaction" class="vector-menu mw-portlet mw-portlet-interaction" > <div class="vector-menu-heading"> Contribute </div> <div class="vector-menu-content"> <ul class="vector-menu-content-list"> <li id="n-help" class="mw-list-item"><a href="/wiki/Help:Contents" title="Guidance on how to use and edit Wikipedia"><span>Help</span></a></li><li id="n-introduction" class="mw-list-item"><a href="/wiki/Help:Introduction" title="Learn how to edit Wikipedia"><span>Learn to edit</span></a></li><li id="n-portal" class="mw-list-item"><a href="/wiki/Wikipedia:Community_portal" title="The hub for editors"><span>Community portal</span></a></li><li id="n-recentchanges" class="mw-list-item"><a href="/wiki/Special:RecentChanges" title="A list of recent changes to Wikipedia [r]" accesskey="r"><span>Recent changes</span></a></li><li id="n-upload" class="mw-list-item"><a href="/wiki/Wikipedia:File_upload_wizard" title="Add images or other media for use on Wikipedia"><span>Upload file</span></a></li> </ul> </div> </div> </div> </div> </div> </div> </nav> <a href="/wiki/Main_Page" class="mw-logo"> <img class="mw-logo-icon" src="/static/images/icons/wikipedia.png" alt="" aria-hidden="true" height="50" width="50"> <span class="mw-logo-container skin-invert"> <img class="mw-logo-wordmark" alt="Wikipedia" src="/static/images/mobile/copyright/wikipedia-wordmark-en.svg" style="width: 7.5em; height: 1.125em;"> <img class="mw-logo-tagline" alt="The Free Encyclopedia" src="/static/images/mobile/copyright/wikipedia-tagline-en.svg" width="117" height="13" style="width: 7.3125em; height: 0.8125em;"> </span> </a> </div> <div class="vector-header-end"> <div id="p-search" role="search" class="vector-search-box-vue vector-search-box-collapses vector-search-box-show-thumbnail vector-search-box-auto-expand-width vector-search-box"> <a href="/wiki/Special:Search" class="cdx-button cdx-button--fake-button cdx-button--fake-button--enabled cdx-button--weight-quiet cdx-button--icon-only search-toggle" title="Search Wikipedia [f]" accesskey="f"><span class="vector-icon mw-ui-icon-search mw-ui-icon-wikimedia-search"></span> <span>Search</span> </a> <div class="vector-typeahead-search-container"> <div class="cdx-typeahead-search cdx-typeahead-search--show-thumbnail cdx-typeahead-search--auto-expand-width"> <form action="/w/index.php" id="searchform" class="cdx-search-input cdx-search-input--has-end-button"> <div id="simpleSearch" class="cdx-search-input__input-wrapper" data-search-loc="header-moved"> <div class="cdx-text-input cdx-text-input--has-start-icon"> <input class="cdx-text-input__input" type="search" name="search" placeholder="Search Wikipedia" aria-label="Search Wikipedia" autocapitalize="sentences" title="Search Wikipedia [f]" accesskey="f" id="searchInput" > <span class="cdx-text-input__icon cdx-text-input__start-icon"></span> </div> <input type="hidden" name="title" value="Special:Search"> </div> <button class="cdx-button cdx-search-input__end-button">Search</button> </form> </div> </div> </div> <nav class="vector-user-links vector-user-links-wide" aria-label="Personal tools"> <div class="vector-user-links-main"> <div id="p-vector-user-menu-preferences" class="vector-menu mw-portlet emptyPortlet" > <div class="vector-menu-content"> <ul class="vector-menu-content-list"> </ul> </div> </div> <div id="p-vector-user-menu-userpage" class="vector-menu mw-portlet emptyPortlet" > <div class="vector-menu-content"> <ul class="vector-menu-content-list"> </ul> </div> </div> <nav class="vector-appearance-landmark" aria-label="Appearance"> <div id="vector-appearance-dropdown" class="vector-dropdown " title="Change the appearance of the page's font size, width, and color" > <input type="checkbox" id="vector-appearance-dropdown-checkbox" role="button" aria-haspopup="true" data-event-name="ui.dropdown-vector-appearance-dropdown" class="vector-dropdown-checkbox " aria-label="Appearance" > <label id="vector-appearance-dropdown-label" for="vector-appearance-dropdown-checkbox" class="vector-dropdown-label cdx-button cdx-button--fake-button cdx-button--fake-button--enabled cdx-button--weight-quiet cdx-button--icon-only " aria-hidden="true" ><span class="vector-icon mw-ui-icon-appearance mw-ui-icon-wikimedia-appearance"></span> <span class="vector-dropdown-label-text">Appearance</span> </label> <div class="vector-dropdown-content"> <div id="vector-appearance-unpinned-container" class="vector-unpinned-container"> </div> </div> </div> </nav> <div id="p-vector-user-menu-notifications" class="vector-menu mw-portlet emptyPortlet" > <div class="vector-menu-content"> <ul class="vector-menu-content-list"> </ul> </div> </div> <div id="p-vector-user-menu-overflow" class="vector-menu mw-portlet" > <div class="vector-menu-content"> <ul class="vector-menu-content-list"> <li id="pt-sitesupport-2" class="user-links-collapsible-item mw-list-item user-links-collapsible-item"><a data-mw="interface" href="https://donate.wikimedia.org/wiki/Special:FundraiserRedirector?utm_source=donate&utm_medium=sidebar&utm_campaign=C13_en.wikipedia.org&uselang=en" class=""><span>Donate</span></a> </li> <li id="pt-createaccount-2" class="user-links-collapsible-item mw-list-item user-links-collapsible-item"><a data-mw="interface" href="/w/index.php?title=Special:CreateAccount&returnto=Enzyme+Commission+number" title="You are encouraged to create an account and log in; however, it is not mandatory" class=""><span>Create account</span></a> </li> <li id="pt-login-2" class="user-links-collapsible-item mw-list-item user-links-collapsible-item"><a data-mw="interface" href="/w/index.php?title=Special:UserLogin&returnto=Enzyme+Commission+number" title="You're encouraged to log in; however, it's not mandatory. [o]" accesskey="o" class=""><span>Log in</span></a> </li> </ul> </div> </div> </div> <div id="vector-user-links-dropdown" class="vector-dropdown vector-user-menu vector-button-flush-right vector-user-menu-logged-out" title="Log in and more options" > <input type="checkbox" id="vector-user-links-dropdown-checkbox" role="button" aria-haspopup="true" data-event-name="ui.dropdown-vector-user-links-dropdown" class="vector-dropdown-checkbox " aria-label="Personal tools" > <label id="vector-user-links-dropdown-label" for="vector-user-links-dropdown-checkbox" class="vector-dropdown-label cdx-button cdx-button--fake-button cdx-button--fake-button--enabled cdx-button--weight-quiet cdx-button--icon-only " aria-hidden="true" ><span class="vector-icon mw-ui-icon-ellipsis mw-ui-icon-wikimedia-ellipsis"></span> <span class="vector-dropdown-label-text">Personal tools</span> </label> <div class="vector-dropdown-content"> <div id="p-personal" class="vector-menu mw-portlet mw-portlet-personal user-links-collapsible-item" title="User menu" > <div class="vector-menu-content"> <ul class="vector-menu-content-list"> <li id="pt-sitesupport" class="user-links-collapsible-item mw-list-item"><a href="https://donate.wikimedia.org/wiki/Special:FundraiserRedirector?utm_source=donate&utm_medium=sidebar&utm_campaign=C13_en.wikipedia.org&uselang=en"><span>Donate</span></a></li><li id="pt-createaccount" class="user-links-collapsible-item mw-list-item"><a href="/w/index.php?title=Special:CreateAccount&returnto=Enzyme+Commission+number" title="You are encouraged to create an account and log in; however, it is not mandatory"><span class="vector-icon mw-ui-icon-userAdd mw-ui-icon-wikimedia-userAdd"></span> <span>Create account</span></a></li><li id="pt-login" class="user-links-collapsible-item mw-list-item"><a href="/w/index.php?title=Special:UserLogin&returnto=Enzyme+Commission+number" title="You're encouraged to log in; however, it's not mandatory. [o]" accesskey="o"><span class="vector-icon mw-ui-icon-logIn mw-ui-icon-wikimedia-logIn"></span> <span>Log in</span></a></li> </ul> </div> </div> <div id="p-user-menu-anon-editor" class="vector-menu mw-portlet mw-portlet-user-menu-anon-editor" > <div class="vector-menu-heading"> Pages for logged out editors <a href="/wiki/Help:Introduction" aria-label="Learn more about editing"><span>learn more</span></a> </div> <div class="vector-menu-content"> <ul class="vector-menu-content-list"> <li id="pt-anoncontribs" class="mw-list-item"><a href="/wiki/Special:MyContributions" title="A list of edits made from this IP address [y]" accesskey="y"><span>Contributions</span></a></li><li id="pt-anontalk" class="mw-list-item"><a href="/wiki/Special:MyTalk" title="Discussion about edits from this IP address [n]" accesskey="n"><span>Talk</span></a></li> </ul> </div> </div> </div> </div> </nav> </div> </header> </div> <div class="mw-page-container"> <div class="mw-page-container-inner"> <div class="vector-sitenotice-container"> <div id="siteNotice"><!-- CentralNotice --></div> </div> <div class="vector-column-start"> <div class="vector-main-menu-container"> <div id="mw-navigation"> <nav id="mw-panel" class="vector-main-menu-landmark" aria-label="Site"> <div id="vector-main-menu-pinned-container" class="vector-pinned-container"> </div> </nav> </div> </div> <div class="vector-sticky-pinned-container"> <nav id="mw-panel-toc" aria-label="Contents" data-event-name="ui.sidebar-toc" class="mw-table-of-contents-container vector-toc-landmark"> <div id="vector-toc-pinned-container" class="vector-pinned-container"> <div id="vector-toc" class="vector-toc vector-pinnable-element"> <div class="vector-pinnable-header vector-toc-pinnable-header vector-pinnable-header-pinned" data-feature-name="toc-pinned" data-pinnable-element-id="vector-toc" > <h2 class="vector-pinnable-header-label">Contents</h2> <button class="vector-pinnable-header-toggle-button vector-pinnable-header-pin-button" data-event-name="pinnable-header.vector-toc.pin">move to sidebar</button> <button class="vector-pinnable-header-toggle-button vector-pinnable-header-unpin-button" data-event-name="pinnable-header.vector-toc.unpin">hide</button> </div> <ul class="vector-toc-contents" id="mw-panel-toc-list"> <li id="toc-mw-content-text" class="vector-toc-list-item vector-toc-level-1"> <a href="#" class="vector-toc-link"> <div class="vector-toc-text">(Top)</div> </a> </li> <li id="toc-Format_of_number" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#Format_of_number"> <div class="vector-toc-text"> <span class="vector-toc-numb">1</span> <span>Format of number</span> </div> </a> <ul id="toc-Format_of_number-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-Top_level_codes" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#Top_level_codes"> <div class="vector-toc-text"> <span class="vector-toc-numb">2</span> <span>Top level codes</span> </div> </a> <ul id="toc-Top_level_codes-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-Reaction_similarity" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#Reaction_similarity"> <div class="vector-toc-text"> <span class="vector-toc-numb">3</span> <span>Reaction similarity</span> </div> </a> <ul id="toc-Reaction_similarity-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-History" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#History"> <div class="vector-toc-text"> <span class="vector-toc-numb">4</span> <span>History</span> </div> </a> <ul id="toc-History-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-See_also" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#See_also"> <div class="vector-toc-text"> <span class="vector-toc-numb">5</span> <span>See also</span> </div> </a> <ul id="toc-See_also-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-References" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#References"> <div class="vector-toc-text"> <span class="vector-toc-numb">6</span> <span>References</span> </div> </a> <ul id="toc-References-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-External_links" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#External_links"> <div class="vector-toc-text"> <span class="vector-toc-numb">7</span> <span>External links</span> </div> </a> <ul id="toc-External_links-sublist" class="vector-toc-list"> </ul> </li> </ul> </div> </div> </nav> </div> </div> <div class="mw-content-container"> <main id="content" class="mw-body"> <header class="mw-body-header vector-page-titlebar"> <nav aria-label="Contents" class="vector-toc-landmark"> <div id="vector-page-titlebar-toc" class="vector-dropdown vector-page-titlebar-toc vector-button-flush-left" > <input type="checkbox" id="vector-page-titlebar-toc-checkbox" role="button" aria-haspopup="true" data-event-name="ui.dropdown-vector-page-titlebar-toc" class="vector-dropdown-checkbox " aria-label="Toggle the table of contents" > <label id="vector-page-titlebar-toc-label" for="vector-page-titlebar-toc-checkbox" class="vector-dropdown-label cdx-button cdx-button--fake-button cdx-button--fake-button--enabled cdx-button--weight-quiet cdx-button--icon-only " aria-hidden="true" ><span class="vector-icon mw-ui-icon-listBullet mw-ui-icon-wikimedia-listBullet"></span> <span class="vector-dropdown-label-text">Toggle the table of contents</span> </label> <div class="vector-dropdown-content"> <div id="vector-page-titlebar-toc-unpinned-container" class="vector-unpinned-container"> </div> </div> </div> </nav> <h1 id="firstHeading" class="firstHeading mw-first-heading"><span class="mw-page-title-main">Enzyme Commission number</span></h1> <div id="p-lang-btn" class="vector-dropdown mw-portlet mw-portlet-lang" > <input type="checkbox" id="p-lang-btn-checkbox" role="button" aria-haspopup="true" data-event-name="ui.dropdown-p-lang-btn" class="vector-dropdown-checkbox mw-interlanguage-selector" aria-label="Go to an article in another language. Available in 40 languages" > <label id="p-lang-btn-label" for="p-lang-btn-checkbox" class="vector-dropdown-label cdx-button cdx-button--fake-button cdx-button--fake-button--enabled cdx-button--weight-quiet cdx-button--action-progressive mw-portlet-lang-heading-40" aria-hidden="true" ><span class="vector-icon mw-ui-icon-language-progressive mw-ui-icon-wikimedia-language-progressive"></span> <span class="vector-dropdown-label-text">40 languages</span> </label> <div class="vector-dropdown-content"> <div class="vector-menu-content"> <ul class="vector-menu-content-list"> <li class="interlanguage-link interwiki-ar mw-list-item"><a href="https://ar.wikipedia.org/wiki/%D8%B1%D9%82%D9%85_%D8%A7%D9%84%D8%AA%D8%B5%D9%86%D9%8A%D9%81_%D8%A7%D9%84%D8%A5%D9%86%D8%B2%D9%8A%D9%85%D9%8A" title="رقم التصنيف الإنزيمي – Arabic" lang="ar" hreflang="ar" data-title="رقم التصنيف الإنزيمي" data-language-autonym="العربية" data-language-local-name="Arabic" class="interlanguage-link-target"><span>العربية</span></a></li><li class="interlanguage-link interwiki-bn mw-list-item"><a href="https://bn.wikipedia.org/wiki/%E0%A6%89%E0%A7%8E%E0%A6%B8%E0%A7%87%E0%A6%9A%E0%A6%95_%E0%A6%95%E0%A6%AE%E0%A6%BF%E0%A6%B6%E0%A6%A8_%E0%A6%B8%E0%A6%82%E0%A6%96%E0%A7%8D%E0%A6%AF%E0%A6%BE" title="উৎসেচক কমিশন সংখ্যা – Bangla" lang="bn" hreflang="bn" data-title="উৎসেচক কমিশন সংখ্যা" data-language-autonym="বাংলা" data-language-local-name="Bangla" class="interlanguage-link-target"><span>বাংলা</span></a></li><li class="interlanguage-link interwiki-bg mw-list-item"><a href="https://bg.wikipedia.org/wiki/%D0%9A%D0%BB%D0%B0%D1%81%D0%B8%D1%84%D0%B8%D0%BA%D0%B0%D1%86%D0%B8%D1%8F_%D0%BD%D0%B0_%D0%B5%D0%BD%D0%B7%D0%B8%D0%BC%D0%B8" title="Класификация на ензими – Bulgarian" lang="bg" hreflang="bg" data-title="Класификация на ензими" data-language-autonym="Български" data-language-local-name="Bulgarian" class="interlanguage-link-target"><span>Български</span></a></li><li class="interlanguage-link interwiki-bs mw-list-item"><a href="https://bs.wikipedia.org/wiki/EC_broj_enzima" title="EC broj enzima – Bosnian" lang="bs" hreflang="bs" data-title="EC broj enzima" data-language-autonym="Bosanski" data-language-local-name="Bosnian" class="interlanguage-link-target"><span>Bosanski</span></a></li><li class="interlanguage-link interwiki-ca mw-list-item"><a href="https://ca.wikipedia.org/wiki/N%C3%BAmero_EC" title="Número EC – Catalan" lang="ca" hreflang="ca" data-title="Número EC" data-language-autonym="Català" data-language-local-name="Catalan" class="interlanguage-link-target"><span>Català</span></a></li><li class="interlanguage-link interwiki-cs mw-list-item"><a href="https://cs.wikipedia.org/wiki/%C4%8C%C3%ADslo_EC" title="Číslo EC – Czech" lang="cs" hreflang="cs" data-title="Číslo EC" data-language-autonym="Čeština" data-language-local-name="Czech" class="interlanguage-link-target"><span>Čeština</span></a></li><li class="interlanguage-link interwiki-da mw-list-item"><a href="https://da.wikipedia.org/wiki/EC-nummer" title="EC-nummer – Danish" lang="da" hreflang="da" data-title="EC-nummer" data-language-autonym="Dansk" data-language-local-name="Danish" class="interlanguage-link-target"><span>Dansk</span></a></li><li class="interlanguage-link interwiki-de mw-list-item"><a href="https://de.wikipedia.org/wiki/EC-Nummer" title="EC-Nummer – German" lang="de" hreflang="de" data-title="EC-Nummer" data-language-autonym="Deutsch" data-language-local-name="German" class="interlanguage-link-target"><span>Deutsch</span></a></li><li class="interlanguage-link interwiki-et mw-list-item"><a href="https://et.wikipedia.org/wiki/Ens%C3%BC%C3%BCmiklasside_nomenklatuur" title="Ensüümiklasside nomenklatuur – Estonian" lang="et" hreflang="et" data-title="Ensüümiklasside nomenklatuur" data-language-autonym="Eesti" data-language-local-name="Estonian" class="interlanguage-link-target"><span>Eesti</span></a></li><li class="interlanguage-link interwiki-es mw-list-item"><a href="https://es.wikipedia.org/wiki/N%C3%BAmero_EC" title="Número EC – Spanish" lang="es" hreflang="es" data-title="Número EC" data-language-autonym="Español" data-language-local-name="Spanish" class="interlanguage-link-target"><span>Español</span></a></li><li class="interlanguage-link interwiki-fa mw-list-item"><a href="https://fa.wikipedia.org/wiki/%D8%B9%D8%AF%D8%AF_%DA%AF%D8%B1%D9%88%D9%87_%D8%A2%D9%86%D8%B2%DB%8C%D9%85" title="عدد گروه آنزیم – Persian" lang="fa" hreflang="fa" data-title="عدد گروه آنزیم" data-language-autonym="فارسی" data-language-local-name="Persian" class="interlanguage-link-target"><span>فارسی</span></a></li><li class="interlanguage-link interwiki-fr mw-list-item"><a href="https://fr.wikipedia.org/wiki/Nomenclature_EC" title="Nomenclature EC – French" lang="fr" hreflang="fr" data-title="Nomenclature EC" data-language-autonym="Français" data-language-local-name="French" class="interlanguage-link-target"><span>Français</span></a></li><li class="interlanguage-link interwiki-gl mw-list-item"><a href="https://gl.wikipedia.org/wiki/N%C3%BAmero_EC" title="Número EC – Galician" lang="gl" hreflang="gl" data-title="Número EC" data-language-autonym="Galego" data-language-local-name="Galician" class="interlanguage-link-target"><span>Galego</span></a></li><li class="interlanguage-link interwiki-ko mw-list-item"><a href="https://ko.wikipedia.org/wiki/EC_%EB%B2%88%ED%98%B8" title="EC 번호 – Korean" lang="ko" hreflang="ko" data-title="EC 번호" data-language-autonym="한국어" data-language-local-name="Korean" class="interlanguage-link-target"><span>한국어</span></a></li><li class="interlanguage-link interwiki-hy mw-list-item"><a href="https://hy.wikipedia.org/wiki/%D5%96%D5%A5%D6%80%D5%B4%D5%A5%D5%B6%D5%BF%D5%B6%D5%A5%D6%80%D5%AB_%D5%B4%D5%AB%D5%BB%D5%A1%D5%A6%D5%A3%D5%A1%D5%B5%D5%AB%D5%B6_%D5%A4%D5%A1%D5%BD%D5%A1%D5%AF%D5%A1%D6%80%D5%A3%D5%B8%D6%82%D5%B4" title="Ֆերմենտների միջազգային դասակարգում – Armenian" lang="hy" hreflang="hy" data-title="Ֆերմենտների միջազգային դասակարգում" data-language-autonym="Հայերեն" data-language-local-name="Armenian" class="interlanguage-link-target"><span>Հայերեն</span></a></li><li class="interlanguage-link interwiki-id mw-list-item"><a href="https://id.wikipedia.org/wiki/Nomor_EC" title="Nomor EC – Indonesian" lang="id" hreflang="id" data-title="Nomor EC" data-language-autonym="Bahasa Indonesia" data-language-local-name="Indonesian" class="interlanguage-link-target"><span>Bahasa Indonesia</span></a></li><li class="interlanguage-link interwiki-it mw-list-item"><a href="https://it.wikipedia.org/wiki/Classificazione_EC" title="Classificazione EC – Italian" lang="it" hreflang="it" data-title="Classificazione EC" data-language-autonym="Italiano" data-language-local-name="Italian" class="interlanguage-link-target"><span>Italiano</span></a></li><li class="interlanguage-link interwiki-kk mw-list-item"><a href="https://kk.wikipedia.org/wiki/EC_%D0%BD%D3%A9%D0%BC%D1%96%D1%80%D1%96" title="EC нөмірі – Kazakh" lang="kk" hreflang="kk" data-title="EC нөмірі" data-language-autonym="Қазақша" data-language-local-name="Kazakh" class="interlanguage-link-target"><span>Қазақша</span></a></li><li class="interlanguage-link interwiki-la mw-list-item"><a href="https://la.wikipedia.org/wiki/Numerus_commissionis_enzymorum" title="Numerus commissionis enzymorum – Latin" lang="la" hreflang="la" data-title="Numerus commissionis enzymorum" data-language-autonym="Latina" data-language-local-name="Latin" class="interlanguage-link-target"><span>Latina</span></a></li><li class="interlanguage-link interwiki-hu mw-list-item"><a href="https://hu.wikipedia.org/wiki/EC-sz%C3%A1m" title="EC-szám – Hungarian" lang="hu" hreflang="hu" data-title="EC-szám" data-language-autonym="Magyar" data-language-local-name="Hungarian" class="interlanguage-link-target"><span>Magyar</span></a></li><li class="interlanguage-link interwiki-mk mw-list-item"><a href="https://mk.wikipedia.org/wiki/%D0%91%D1%80%D0%BE%D1%98_%D0%BD%D0%B0_%D0%B5%D0%BD%D0%B7%D0%B8%D0%BC%D1%81%D0%BA%D0%B0%D1%82%D0%B0_%D0%BA%D0%BE%D0%BC%D0%B8%D1%81%D0%B8%D1%98%D0%B0" title="Број на ензимската комисија – Macedonian" lang="mk" hreflang="mk" data-title="Број на ензимската комисија" data-language-autonym="Македонски" data-language-local-name="Macedonian" class="interlanguage-link-target"><span>Македонски</span></a></li><li class="interlanguage-link interwiki-ml mw-list-item"><a href="https://ml.wikipedia.org/wiki/%E0%B4%8E%E0%B5%BB%E0%B4%B8%E0%B5%88%E0%B4%82_%E0%B4%95%E0%B4%AE%E0%B5%8D%E0%B4%AE%E0%B5%80%E0%B4%B7%E0%B5%BB_%E0%B4%A8%E0%B4%AE%E0%B5%8D%E0%B4%AA%E0%B5%BC" title="എൻസൈം കമ്മീഷൻ നമ്പർ – Malayalam" lang="ml" hreflang="ml" data-title="എൻസൈം കമ്മീഷൻ നമ്പർ" data-language-autonym="മലയാളം" data-language-local-name="Malayalam" class="interlanguage-link-target"><span>മലയാളം</span></a></li><li class="interlanguage-link interwiki-ms mw-list-item"><a href="https://ms.wikipedia.org/wiki/Nombor_Suruhanjaya_Enzim" title="Nombor Suruhanjaya Enzim – Malay" lang="ms" hreflang="ms" data-title="Nombor Suruhanjaya Enzim" data-language-autonym="Bahasa Melayu" data-language-local-name="Malay" class="interlanguage-link-target"><span>Bahasa Melayu</span></a></li><li class="interlanguage-link interwiki-nl mw-list-item"><a href="https://nl.wikipedia.org/wiki/EC-nummer" title="EC-nummer – Dutch" lang="nl" hreflang="nl" data-title="EC-nummer" data-language-autonym="Nederlands" data-language-local-name="Dutch" class="interlanguage-link-target"><span>Nederlands</span></a></li><li class="interlanguage-link interwiki-ja mw-list-item"><a href="https://ja.wikipedia.org/wiki/EC%E7%95%AA%E5%8F%B7_(%E9%85%B5%E7%B4%A0%E7%95%AA%E5%8F%B7)" title="EC番号 (酵素番号) – Japanese" lang="ja" hreflang="ja" data-title="EC番号 (酵素番号)" data-language-autonym="日本語" data-language-local-name="Japanese" class="interlanguage-link-target"><span>日本語</span></a></li><li class="interlanguage-link interwiki-no mw-list-item"><a href="https://no.wikipedia.org/wiki/EC-nummer" title="EC-nummer – Norwegian Bokmål" lang="nb" hreflang="nb" data-title="EC-nummer" data-language-autonym="Norsk bokmål" data-language-local-name="Norwegian Bokmål" class="interlanguage-link-target"><span>Norsk bokmål</span></a></li><li class="interlanguage-link interwiki-pl mw-list-item"><a href="https://pl.wikipedia.org/wiki/Numer_EC" title="Numer EC – Polish" lang="pl" hreflang="pl" data-title="Numer EC" data-language-autonym="Polski" data-language-local-name="Polish" class="interlanguage-link-target"><span>Polski</span></a></li><li class="interlanguage-link interwiki-pt mw-list-item"><a href="https://pt.wikipedia.org/wiki/N%C3%BAmero_EC" title="Número EC – Portuguese" lang="pt" hreflang="pt" data-title="Número EC" data-language-autonym="Português" data-language-local-name="Portuguese" class="interlanguage-link-target"><span>Português</span></a></li><li class="interlanguage-link interwiki-ro mw-list-item"><a href="https://ro.wikipedia.org/wiki/Num%C4%83r_EC" title="Număr EC – Romanian" lang="ro" hreflang="ro" data-title="Număr EC" data-language-autonym="Română" data-language-local-name="Romanian" class="interlanguage-link-target"><span>Română</span></a></li><li class="interlanguage-link interwiki-ru mw-list-item"><a href="https://ru.wikipedia.org/wiki/%D0%A8%D0%B8%D1%84%D1%80_%D0%9A%D0%A4" title="Шифр КФ – Russian" lang="ru" hreflang="ru" data-title="Шифр КФ" data-language-autonym="Русский" data-language-local-name="Russian" class="interlanguage-link-target"><span>Русский</span></a></li><li class="interlanguage-link interwiki-sk mw-list-item"><a href="https://sk.wikipedia.org/wiki/%C4%8C%C3%ADslo_EC" title="Číslo EC – Slovak" lang="sk" hreflang="sk" data-title="Číslo EC" data-language-autonym="Slovenčina" data-language-local-name="Slovak" class="interlanguage-link-target"><span>Slovenčina</span></a></li><li class="interlanguage-link interwiki-sl mw-list-item"><a href="https://sl.wikipedia.org/wiki/%C5%A0tevilka_EC" title="Številka EC – Slovenian" lang="sl" hreflang="sl" data-title="Številka EC" data-language-autonym="Slovenščina" data-language-local-name="Slovenian" class="interlanguage-link-target"><span>Slovenščina</span></a></li><li class="interlanguage-link interwiki-sr mw-list-item"><a href="https://sr.wikipedia.org/wiki/Klasifikacija_enzima" title="Klasifikacija enzima – Serbian" lang="sr" hreflang="sr" data-title="Klasifikacija enzima" data-language-autonym="Српски / srpski" data-language-local-name="Serbian" class="interlanguage-link-target"><span>Српски / srpski</span></a></li><li class="interlanguage-link interwiki-sh mw-list-item"><a href="https://sh.wikipedia.org/wiki/Klasifikacija_enzima" title="Klasifikacija enzima – Serbo-Croatian" lang="sh" hreflang="sh" data-title="Klasifikacija enzima" data-language-autonym="Srpskohrvatski / српскохрватски" data-language-local-name="Serbo-Croatian" class="interlanguage-link-target"><span>Srpskohrvatski / српскохрватски</span></a></li><li class="interlanguage-link interwiki-fi mw-list-item"><a href="https://fi.wikipedia.org/wiki/EC-numero" title="EC-numero – Finnish" lang="fi" hreflang="fi" data-title="EC-numero" data-language-autonym="Suomi" data-language-local-name="Finnish" class="interlanguage-link-target"><span>Suomi</span></a></li><li class="interlanguage-link interwiki-sv mw-list-item"><a href="https://sv.wikipedia.org/wiki/EC-nummer" title="EC-nummer – Swedish" lang="sv" hreflang="sv" data-title="EC-nummer" data-language-autonym="Svenska" data-language-local-name="Swedish" class="interlanguage-link-target"><span>Svenska</span></a></li><li class="interlanguage-link interwiki-th mw-list-item"><a href="https://th.wikipedia.org/wiki/%E0%B8%81%E0%B8%B2%E0%B8%A3%E0%B8%95%E0%B8%B1%E0%B9%89%E0%B8%87%E0%B8%8A%E0%B8%B7%E0%B9%88%E0%B8%AD%E0%B9%80%E0%B8%AD%E0%B8%99%E0%B9%84%E0%B8%8B%E0%B8%A1%E0%B9%8C" title="การตั้งชื่อเอนไซม์ – Thai" lang="th" hreflang="th" data-title="การตั้งชื่อเอนไซม์" data-language-autonym="ไทย" data-language-local-name="Thai" class="interlanguage-link-target"><span>ไทย</span></a></li><li class="interlanguage-link interwiki-tr mw-list-item"><a href="https://tr.wikipedia.org/wiki/EC_numaras%C4%B1" title="EC numarası – Turkish" lang="tr" hreflang="tr" data-title="EC numarası" data-language-autonym="Türkçe" data-language-local-name="Turkish" class="interlanguage-link-target"><span>Türkçe</span></a></li><li class="interlanguage-link interwiki-zh-yue mw-list-item"><a href="https://zh-yue.wikipedia.org/wiki/EC%E5%86%A7%E5%B7%B4" title="EC冧巴 – Cantonese" lang="yue" hreflang="yue" data-title="EC冧巴" data-language-autonym="粵語" data-language-local-name="Cantonese" class="interlanguage-link-target"><span>粵語</span></a></li><li class="interlanguage-link interwiki-zh mw-list-item"><a href="https://zh.wikipedia.org/wiki/EC%E7%B7%A8%E8%99%9F" title="EC編號 – Chinese" lang="zh" hreflang="zh" data-title="EC編號" data-language-autonym="中文" data-language-local-name="Chinese" class="interlanguage-link-target"><span>中文</span></a></li> </ul> <div class="after-portlet after-portlet-lang"><span class="wb-langlinks-edit wb-langlinks-link"><a href="https://www.wikidata.org/wiki/Special:EntityPage/Q741108#sitelinks-wikipedia" title="Edit interlanguage links" class="wbc-editpage">Edit links</a></span></div> </div> </div> </div> </header> <div class="vector-page-toolbar"> <div class="vector-page-toolbar-container"> <div id="left-navigation"> <nav aria-label="Namespaces"> <div id="p-associated-pages" class="vector-menu vector-menu-tabs mw-portlet mw-portlet-associated-pages" > <div class="vector-menu-content"> <ul class="vector-menu-content-list"> <li id="ca-nstab-main" class="selected vector-tab-noicon mw-list-item"><a href="/wiki/Enzyme_Commission_number" title="View the content page [c]" accesskey="c"><span>Article</span></a></li><li id="ca-talk" class="vector-tab-noicon mw-list-item"><a href="/wiki/Talk:Enzyme_Commission_number" rel="discussion" title="Discuss improvements to the content page [t]" accesskey="t"><span>Talk</span></a></li> </ul> </div> </div> <div id="vector-variants-dropdown" class="vector-dropdown emptyPortlet" > <input type="checkbox" id="vector-variants-dropdown-checkbox" role="button" aria-haspopup="true" data-event-name="ui.dropdown-vector-variants-dropdown" class="vector-dropdown-checkbox " aria-label="Change language variant" > <label id="vector-variants-dropdown-label" for="vector-variants-dropdown-checkbox" class="vector-dropdown-label cdx-button cdx-button--fake-button cdx-button--fake-button--enabled cdx-button--weight-quiet" aria-hidden="true" ><span class="vector-dropdown-label-text">English</span> </label> <div class="vector-dropdown-content"> <div id="p-variants" class="vector-menu mw-portlet mw-portlet-variants emptyPortlet" > <div class="vector-menu-content"> <ul class="vector-menu-content-list"> </ul> </div> </div> </div> </div> </nav> </div> <div id="right-navigation" class="vector-collapsible"> <nav aria-label="Views"> <div id="p-views" class="vector-menu vector-menu-tabs mw-portlet mw-portlet-views" > <div class="vector-menu-content"> <ul class="vector-menu-content-list"> <li id="ca-view" class="selected vector-tab-noicon mw-list-item"><a href="/wiki/Enzyme_Commission_number"><span>Read</span></a></li><li id="ca-edit" class="vector-tab-noicon mw-list-item"><a href="/w/index.php?title=Enzyme_Commission_number&action=edit" title="Edit this page [e]" accesskey="e"><span>Edit</span></a></li><li id="ca-history" class="vector-tab-noicon mw-list-item"><a href="/w/index.php?title=Enzyme_Commission_number&action=history" title="Past revisions of this page [h]" accesskey="h"><span>View history</span></a></li> </ul> </div> </div> </nav> <nav class="vector-page-tools-landmark" aria-label="Page tools"> <div id="vector-page-tools-dropdown" class="vector-dropdown vector-page-tools-dropdown" > <input type="checkbox" id="vector-page-tools-dropdown-checkbox" role="button" aria-haspopup="true" data-event-name="ui.dropdown-vector-page-tools-dropdown" class="vector-dropdown-checkbox " aria-label="Tools" > <label id="vector-page-tools-dropdown-label" for="vector-page-tools-dropdown-checkbox" class="vector-dropdown-label cdx-button cdx-button--fake-button cdx-button--fake-button--enabled cdx-button--weight-quiet" aria-hidden="true" ><span class="vector-dropdown-label-text">Tools</span> </label> <div class="vector-dropdown-content"> <div id="vector-page-tools-unpinned-container" class="vector-unpinned-container"> <div id="vector-page-tools" class="vector-page-tools vector-pinnable-element"> <div class="vector-pinnable-header vector-page-tools-pinnable-header vector-pinnable-header-unpinned" data-feature-name="page-tools-pinned" data-pinnable-element-id="vector-page-tools" data-pinned-container-id="vector-page-tools-pinned-container" data-unpinned-container-id="vector-page-tools-unpinned-container" > <div class="vector-pinnable-header-label">Tools</div> <button class="vector-pinnable-header-toggle-button vector-pinnable-header-pin-button" data-event-name="pinnable-header.vector-page-tools.pin">move to sidebar</button> <button class="vector-pinnable-header-toggle-button vector-pinnable-header-unpin-button" data-event-name="pinnable-header.vector-page-tools.unpin">hide</button> </div> <div id="p-cactions" class="vector-menu mw-portlet mw-portlet-cactions emptyPortlet vector-has-collapsible-items" title="More options" > <div class="vector-menu-heading"> Actions </div> <div class="vector-menu-content"> <ul class="vector-menu-content-list"> <li id="ca-more-view" class="selected vector-more-collapsible-item mw-list-item"><a href="/wiki/Enzyme_Commission_number"><span>Read</span></a></li><li id="ca-more-edit" class="vector-more-collapsible-item mw-list-item"><a href="/w/index.php?title=Enzyme_Commission_number&action=edit" title="Edit this page [e]" accesskey="e"><span>Edit</span></a></li><li id="ca-more-history" class="vector-more-collapsible-item mw-list-item"><a href="/w/index.php?title=Enzyme_Commission_number&action=history"><span>View history</span></a></li> </ul> </div> </div> <div id="p-tb" class="vector-menu mw-portlet mw-portlet-tb" > <div class="vector-menu-heading"> General </div> <div class="vector-menu-content"> <ul class="vector-menu-content-list"> <li id="t-whatlinkshere" class="mw-list-item"><a href="/wiki/Special:WhatLinksHere/Enzyme_Commission_number" title="List of all English Wikipedia pages containing links to this page [j]" accesskey="j"><span>What links here</span></a></li><li id="t-recentchangeslinked" class="mw-list-item"><a href="/wiki/Special:RecentChangesLinked/Enzyme_Commission_number" rel="nofollow" title="Recent changes in pages linked from this page [k]" accesskey="k"><span>Related changes</span></a></li><li id="t-upload" class="mw-list-item"><a href="/wiki/Wikipedia:File_Upload_Wizard" title="Upload files [u]" accesskey="u"><span>Upload file</span></a></li><li id="t-specialpages" class="mw-list-item"><a href="/wiki/Special:SpecialPages" title="A list of all special pages [q]" accesskey="q"><span>Special pages</span></a></li><li id="t-permalink" class="mw-list-item"><a href="/w/index.php?title=Enzyme_Commission_number&oldid=1233499650" title="Permanent link to this revision of this page"><span>Permanent link</span></a></li><li id="t-info" class="mw-list-item"><a href="/w/index.php?title=Enzyme_Commission_number&action=info" title="More information about this page"><span>Page information</span></a></li><li id="t-cite" class="mw-list-item"><a href="/w/index.php?title=Special:CiteThisPage&page=Enzyme_Commission_number&id=1233499650&wpFormIdentifier=titleform" title="Information on how to cite this page"><span>Cite this page</span></a></li><li id="t-urlshortener" class="mw-list-item"><a href="/w/index.php?title=Special:UrlShortener&url=https%3A%2F%2Fen.wikipedia.org%2Fwiki%2FEnzyme_Commission_number"><span>Get shortened URL</span></a></li><li id="t-urlshortener-qrcode" class="mw-list-item"><a href="/w/index.php?title=Special:QrCode&url=https%3A%2F%2Fen.wikipedia.org%2Fwiki%2FEnzyme_Commission_number"><span>Download QR code</span></a></li> </ul> </div> </div> <div id="p-coll-print_export" class="vector-menu mw-portlet mw-portlet-coll-print_export" > <div class="vector-menu-heading"> Print/export </div> <div class="vector-menu-content"> <ul class="vector-menu-content-list"> <li id="coll-download-as-rl" class="mw-list-item"><a href="/w/index.php?title=Special:DownloadAsPdf&page=Enzyme_Commission_number&action=show-download-screen" title="Download this page as a PDF file"><span>Download as PDF</span></a></li><li id="t-print" class="mw-list-item"><a href="/w/index.php?title=Enzyme_Commission_number&printable=yes" title="Printable version of this page [p]" accesskey="p"><span>Printable version</span></a></li> </ul> </div> </div> <div id="p-wikibase-otherprojects" class="vector-menu mw-portlet mw-portlet-wikibase-otherprojects" > <div class="vector-menu-heading"> In other projects </div> <div class="vector-menu-content"> <ul class="vector-menu-content-list"> <li class="wb-otherproject-link wb-otherproject-commons mw-list-item"><a href="https://commons.wikimedia.org/wiki/Category:EC_numbers" hreflang="en"><span>Wikimedia Commons</span></a></li><li id="t-wikibase" class="wb-otherproject-link wb-otherproject-wikibase-dataitem mw-list-item"><a href="https://www.wikidata.org/wiki/Special:EntityPage/Q741108" title="Structured data on this page hosted by Wikidata [g]" accesskey="g"><span>Wikidata item</span></a></li> </ul> </div> </div> </div> </div> </div> </div> </nav> </div> </div> </div> <div class="vector-column-end"> <div class="vector-sticky-pinned-container"> <nav class="vector-page-tools-landmark" aria-label="Page tools"> <div id="vector-page-tools-pinned-container" class="vector-pinned-container"> </div> </nav> <nav class="vector-appearance-landmark" aria-label="Appearance"> <div id="vector-appearance-pinned-container" class="vector-pinned-container"> <div id="vector-appearance" class="vector-appearance vector-pinnable-element"> <div class="vector-pinnable-header vector-appearance-pinnable-header vector-pinnable-header-pinned" data-feature-name="appearance-pinned" data-pinnable-element-id="vector-appearance" data-pinned-container-id="vector-appearance-pinned-container" data-unpinned-container-id="vector-appearance-unpinned-container" > <div class="vector-pinnable-header-label">Appearance</div> <button class="vector-pinnable-header-toggle-button vector-pinnable-header-pin-button" data-event-name="pinnable-header.vector-appearance.pin">move to sidebar</button> <button class="vector-pinnable-header-toggle-button vector-pinnable-header-unpin-button" data-event-name="pinnable-header.vector-appearance.unpin">hide</button> </div> </div> </div> </nav> </div> </div> <div id="bodyContent" class="vector-body" aria-labelledby="firstHeading" data-mw-ve-target-container> <div class="vector-body-before-content"> <div class="mw-indicators"> </div> <div id="siteSub" class="noprint">From Wikipedia, the free encyclopedia</div> </div> <div id="contentSub"><div id="mw-content-subtitle"></div></div> <div id="mw-content-text" class="mw-body-content"><div class="mw-content-ltr mw-parser-output" lang="en" dir="ltr"><div class="shortdescription nomobile noexcerpt noprint searchaux" style="display:none">Chemical numbering scheme</div> <style data-mw-deduplicate="TemplateStyles:r1236090951">.mw-parser-output .hatnote{font-style:italic}.mw-parser-output div.hatnote{padding-left:1.6em;margin-bottom:0.5em}.mw-parser-output .hatnote i{font-style:normal}.mw-parser-output .hatnote+link+.hatnote{margin-top:-0.5em}@media print{body.ns-0 .mw-parser-output .hatnote{display:none!important}}</style><div role="note" class="hatnote navigation-not-searchable">Not to be confused with <a href="/wiki/European_Community_number" title="European Community number">European Community number</a>.</div> <p>The <b>Enzyme Commission number</b> (<b>EC number</b>) is a <a href="/wiki/Numbering_scheme" title="Numbering scheme">numerical classification</a> scheme for <a href="/wiki/Enzyme" title="Enzyme">enzymes</a>, based on the <a href="/wiki/Chemical_reaction" title="Chemical reaction">chemical reactions</a> they <a href="/wiki/Catalysis" title="Catalysis">catalyze</a>.<sup id="cite_ref-isbn0-12-227164-5_1-0" class="reference"><a href="#cite_note-isbn0-12-227164-5-1"><span class="cite-bracket">[</span>1<span class="cite-bracket">]</span></a></sup> As a system of <b>enzyme nomenclature</b>, every EC number is associated with a recommended name for the corresponding enzyme-catalyzed reaction. </p><p>EC numbers do not specify enzymes but enzyme-catalyzed reactions. If different enzymes (for instance from different organisms) catalyze the same reaction, then they receive the same EC number.<sup id="cite_ref-expasy_2-0" class="reference"><a href="#cite_note-expasy-2"><span class="cite-bracket">[</span>2<span class="cite-bracket">]</span></a></sup> Furthermore, through <a href="/wiki/Convergent_evolution" title="Convergent evolution">convergent evolution</a>, completely different <a href="/wiki/Protein_fold_class" title="Protein fold class">protein folds</a> can catalyze an identical reaction (these are sometimes called <a href="/wiki/Non-homologous_isofunctional_enzymes" title="Non-homologous isofunctional enzymes">non-homologous isofunctional enzymes</a>)<sup id="cite_ref-pmid20433725_3-0" class="reference"><a href="#cite_note-pmid20433725-3"><span class="cite-bracket">[</span>3<span class="cite-bracket">]</span></a></sup> and therefore would be assigned the same EC number. By contrast, <a href="/wiki/UniProt" title="UniProt">UniProt</a> identifiers uniquely specify a protein by its amino acid sequence.<sup id="cite_ref-pmid14681372_4-0" class="reference"><a href="#cite_note-pmid14681372-4"><span class="cite-bracket">[</span>4<span class="cite-bracket">]</span></a></sup> </p> <meta property="mw:PageProp/toc" /> <div class="mw-heading mw-heading2"><h2 id="Format_of_number">Format of number</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Enzyme_Commission_number&action=edit&section=1" title="Edit section: Format of number"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>Every enzyme code consists of the letters "EC" followed by four numbers separated by periods. Those numbers represent a progressively finer classification of the enzyme. Preliminary EC numbers exist and have an 'n' as part of the fourth (serial) digit (e.g. EC 3.5.1.n3).<sup id="cite_ref-expasy_2-1" class="reference"><a href="#cite_note-expasy-2"><span class="cite-bracket">[</span>2<span class="cite-bracket">]</span></a></sup> </p><p>For example, the <a href="/wiki/Tripeptide_aminopeptidase" title="Tripeptide aminopeptidase">tripeptide aminopeptidases</a> have the code "EC 3.4.11.4", whose components indicate the following groups of enzymes: </p> <ul><li><i>EC 3</i> enzymes are hydrolases (enzymes that use <a href="/wiki/Water" title="Water">water</a> to break up some other molecule)</li> <li><i>EC 3.4</i> are hydrolases that act on <a href="/wiki/Peptide_bond" title="Peptide bond">peptide bonds</a></li> <li><i>EC 3.4.11</i> are those hydrolases that cleave off the amino-terminal <a href="/wiki/Amino_acid" title="Amino acid">amino acid</a> from a <a href="/wiki/Polypeptide" class="mw-redirect" title="Polypeptide">polypeptide</a></li> <li><i>EC 3.4.11.4</i> are those that cleave off the amino-terminal end from a <a href="/wiki/Tripeptide" title="Tripeptide">tripeptide</a></li></ul> <div class="mw-heading mw-heading2"><h2 id="Top_level_codes">Top level codes</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Enzyme_Commission_number&action=edit&section=2" title="Edit section: Top level codes"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>NB:The enzyme classification number is different from the 'FORMAT NUMBER' </p> <table class="wikitable"> <caption>Top-level EC numbers<sup id="cite_ref-moss_5-0" class="reference"><a href="#cite_note-moss-5"><span class="cite-bracket">[</span>5<span class="cite-bracket">]</span></a></sup> </caption> <tbody><tr> <th>Class </th> <th>Reaction catalyzed </th> <th>Typical reaction </th> <th>Enzyme example(s) with trivial name </th></tr> <tr> <th><a href="/wiki/List_of_EC_numbers_(EC_1)" title="List of EC numbers (EC 1)">EC 1</a><br /><i><a href="/wiki/Oxidoreductase" title="Oxidoreductase">Oxidoreductases</a></i> </th> <td> <p><a href="/wiki/Oxidation" class="mw-redirect" title="Oxidation">Oxidation</a>/reduction reactions; transfer of H and O atoms or <a href="/wiki/Electron" title="Electron">electrons</a> from one substance to another </p> </td> <td>AH + B → A + BH (<small><b>reduced</b></small>)<br /> A + O → AO (<small><b>oxidized</b></small>) </td> <td><a href="/wiki/Dehydrogenase" title="Dehydrogenase">Dehydrogenase</a>, <a href="/wiki/Oxidase" title="Oxidase">oxidase</a> </td></tr> <tr> <th><a href="/wiki/List_of_EC_numbers_(EC_2)" title="List of EC numbers (EC 2)">EC 2</a><br /><i><a href="/wiki/Transferase" title="Transferase">Transferases</a></i> </th> <td>Transfer of a <a href="/wiki/Functional_group" title="Functional group">functional group</a> from one substance to another. The group may be methyl-, acyl-, amino- or phosphate group </td> <td>AB + C → A + BC </td> <td><a href="/wiki/Transaminase" title="Transaminase">Transaminase</a>, <a href="/wiki/Kinase" title="Kinase">kinase</a> </td></tr> <tr> <th><a href="/wiki/List_of_EC_numbers_(EC_3)" title="List of EC numbers (EC 3)">EC 3</a><br /><i><a href="/wiki/Hydrolase" title="Hydrolase">Hydrolases</a></i> </th> <td>Formation of two products from a substrate by <a href="/wiki/Hydrolysis" title="Hydrolysis">hydrolysis</a> </td> <td>AB + H<sub>2</sub>O → AOH + BH </td> <td><a href="/wiki/Lipase" title="Lipase">Lipase</a>, <a href="/wiki/Amylase" title="Amylase">amylase</a>, <a href="/wiki/Peptidase" class="mw-redirect" title="Peptidase">peptidase</a>, <a href="/wiki/Phosphatase" title="Phosphatase">phosphatase</a> </td></tr> <tr> <th><a href="/wiki/List_of_EC_numbers_(EC_4)" title="List of EC numbers (EC 4)">EC 4</a><br /><i><a href="/wiki/Lyase" title="Lyase">Lyases</a></i> </th> <td>Non-hydrolytic addition or removal of groups from substrates. C-C, C-N, C-O or C-S bonds may be cleaved </td> <td>RCOCOOH → RCOH + CO<sub>2</sub> or [X-A+B-Y] → [A=B + X-Y] </td> <td><a href="/wiki/Decarboxylase" class="mw-redirect" title="Decarboxylase">Decarboxylase</a> </td></tr> <tr> <th><a href="/wiki/List_of_EC_numbers_(EC_5)" title="List of EC numbers (EC 5)">EC 5</a><br /><i><a href="/wiki/Isomerase" title="Isomerase">Isomerases</a></i> </th> <td>Intramolecule rearrangement, i.e. <a href="/wiki/Isomer" title="Isomer">isomerization</a> changes within a single molecule </td> <td>ABC → BCA</td> <td><a href="/wiki/Isomerase" title="Isomerase">Isomerase</a>, <a href="/wiki/Mutase" title="Mutase">mutase</a> </td></tr> <tr> <th><a href="/wiki/List_of_EC_numbers_(EC_6)" title="List of EC numbers (EC 6)">EC 6</a><br /><i><a href="/wiki/Ligase" title="Ligase">Ligases</a></i> </th> <td>Join together two molecules by synthesis of new C-O, C-S, C-N or C-C <a href="/wiki/Covalent_bond" title="Covalent bond">bonds</a> with simultaneous breakdown of <a href="/wiki/Adenosine_triphosphate" title="Adenosine triphosphate">ATP</a> </td> <td>X + Y + ATP → XY + ADP + P<sub>i</sub> </td> <td><a href="/wiki/Synthetase" class="mw-redirect" title="Synthetase">Synthetase</a> </td></tr> <tr> <th><a href="/wiki/List_of_EC_numbers_(EC_7)" title="List of EC numbers (EC 7)">EC 7</a><br /><i><a href="/wiki/Translocase" title="Translocase">Translocases</a></i> </th> <td>Catalyse the movement of ions or molecules across membranes or their separation within membranes </td> <td> </td> <td><a href="/wiki/Membrane_transport_protein" title="Membrane transport protein">Transporter</a> </td></tr></tbody></table> <div class="mw-heading mw-heading2"><h2 id="Reaction_similarity">Reaction similarity</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Enzyme_Commission_number&action=edit&section=3" title="Edit section: Reaction similarity"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>Similarity between enzymatic reactions can be calculated by using bond changes, reaction centres or substructure metrics (formerly EC-BLAST], now the EMBL-EBI Enzyme Portal).<sup id="cite_ref-asad_6-0" class="reference"><a href="#cite_note-asad-6"><span class="cite-bracket">[</span>6<span class="cite-bracket">]</span></a></sup> </p> <div class="mw-heading mw-heading2"><h2 id="History">History</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Enzyme_Commission_number&action=edit&section=4" title="Edit section: History"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>Before the development of the EC number system, enzymes were named in an arbitrary fashion, and names like <a href="/wiki/Old_yellow_enzyme" class="mw-redirect" title="Old yellow enzyme">old yellow enzyme</a> and <a href="/wiki/Malic_enzyme" title="Malic enzyme">malic enzyme</a> that give little or no clue as to what reaction was catalyzed were in common use. Most of these names have fallen into disuse, though a few, especially proteolyic enzymes with very low specificity, such as <a href="/wiki/Pepsin" title="Pepsin">pepsin</a> and <a href="/wiki/Papain" title="Papain">papain</a>, are still used, as rational classification on the basis of specificity has been very difficult. </p><p>By the 1950s the chaos was becoming intolerable, and after Hoffman-Ostenhof<sup id="cite_ref-7" class="reference"><a href="#cite_note-7"><span class="cite-bracket">[</span>7<span class="cite-bracket">]</span></a></sup> and Dixon and Webb<sup id="cite_ref-8" class="reference"><a href="#cite_note-8"><span class="cite-bracket">[</span>8<span class="cite-bracket">]</span></a></sup> had proposed somewhat similar schemes for classifying enzyme-catalyzed reactions, the International Congress of Biochemistry in <a href="/wiki/Brussels" title="Brussels">Brussels</a> set up the Commission on Enzymes under the chairmanship of <a href="/wiki/Malcolm_Dixon_(biochemist)" title="Malcolm Dixon (biochemist)">Malcolm Dixon</a> in 1955. The first version was published in 1961, and the Enzyme Commission was dissolved at that time, though its name lives on in the term <i>EC Number</i>. The current sixth edition, published by the <a href="/wiki/International_Union_of_Biochemistry_and_Molecular_Biology" title="International Union of Biochemistry and Molecular Biology">International Union of Biochemistry and Molecular Biology</a> in 1992 as the last version published as a printed book, contains 3196 different enzymes. Supplements 1-4 were published 1993–1999. Subsequent supplements have been published electronically, at the website of the Nomenclature Committee of the International Union of Biochemistry and Molecular Biology.<sup id="cite_ref-moss_5-1" class="reference"><a href="#cite_note-moss-5"><span class="cite-bracket">[</span>5<span class="cite-bracket">]</span></a></sup> In August 2018, the <a href="/wiki/IUBMB" class="mw-redirect" title="IUBMB">IUBMB</a> modified the system by adding the top-level EC 7 category containing translocases.<sup id="cite_ref-9" class="reference"><a href="#cite_note-9"><span class="cite-bracket">[</span>9<span class="cite-bracket">]</span></a></sup> </p> <div class="mw-heading mw-heading2"><h2 id="See_also">See also</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Enzyme_Commission_number&action=edit&section=5" title="Edit section: See also"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <ul><li><a href="/wiki/List_of_EC_numbers" class="mw-redirect" title="List of EC numbers">List of EC numbers</a></li> <li><a href="/wiki/List_of_enzymes" title="List of enzymes">List of enzymes</a></li> <li><a href="/wiki/TC_number" class="mw-redirect" title="TC number">TC number</a> (classification of membrane transport proteins)</li></ul> <div class="mw-heading mw-heading2"><h2 id="References">References</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Enzyme_Commission_number&action=edit&section=6" title="Edit section: References"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <style data-mw-deduplicate="TemplateStyles:r1239543626">.mw-parser-output .reflist{margin-bottom:0.5em;list-style-type:decimal}@media screen{.mw-parser-output .reflist{font-size:90%}}.mw-parser-output .reflist .references{font-size:100%;margin-bottom:0;list-style-type:inherit}.mw-parser-output .reflist-columns-2{column-width:30em}.mw-parser-output .reflist-columns-3{column-width:25em}.mw-parser-output .reflist-columns{margin-top:0.3em}.mw-parser-output .reflist-columns ol{margin-top:0}.mw-parser-output .reflist-columns li{page-break-inside:avoid;break-inside:avoid-column}.mw-parser-output .reflist-upper-alpha{list-style-type:upper-alpha}.mw-parser-output .reflist-upper-roman{list-style-type:upper-roman}.mw-parser-output .reflist-lower-alpha{list-style-type:lower-alpha}.mw-parser-output .reflist-lower-greek{list-style-type:lower-greek}.mw-parser-output .reflist-lower-roman{list-style-type:lower-roman}</style><div class="reflist reflist-columns references-column-width" style="column-width: 33em;"> <ol class="references"> <li id="cite_note-isbn0-12-227164-5-1"><span class="mw-cite-backlink"><b><a href="#cite_ref-isbn0-12-227164-5_1-0">^</a></b></span> <span class="reference-text"><style data-mw-deduplicate="TemplateStyles:r1238218222">.mw-parser-output cite.citation{font-style:inherit;word-wrap:break-word}.mw-parser-output .citation q{quotes:"\"""\"""'""'"}.mw-parser-output .citation:target{background-color:rgba(0,127,255,0.133)}.mw-parser-output .id-lock-free.id-lock-free a{background:url("//upload.wikimedia.org/wikipedia/commons/6/65/Lock-green.svg")right 0.1em center/9px no-repeat}.mw-parser-output .id-lock-limited.id-lock-limited a,.mw-parser-output .id-lock-registration.id-lock-registration a{background:url("//upload.wikimedia.org/wikipedia/commons/d/d6/Lock-gray-alt-2.svg")right 0.1em center/9px no-repeat}.mw-parser-output .id-lock-subscription.id-lock-subscription a{background:url("//upload.wikimedia.org/wikipedia/commons/a/aa/Lock-red-alt-2.svg")right 0.1em center/9px no-repeat}.mw-parser-output .cs1-ws-icon a{background:url("//upload.wikimedia.org/wikipedia/commons/4/4c/Wikisource-logo.svg")right 0.1em center/12px no-repeat}body:not(.skin-timeless):not(.skin-minerva) .mw-parser-output .id-lock-free a,body:not(.skin-timeless):not(.skin-minerva) .mw-parser-output .id-lock-limited a,body:not(.skin-timeless):not(.skin-minerva) .mw-parser-output .id-lock-registration a,body:not(.skin-timeless):not(.skin-minerva) .mw-parser-output .id-lock-subscription a,body:not(.skin-timeless):not(.skin-minerva) .mw-parser-output .cs1-ws-icon a{background-size:contain;padding:0 1em 0 0}.mw-parser-output .cs1-code{color:inherit;background:inherit;border:none;padding:inherit}.mw-parser-output .cs1-hidden-error{display:none;color:var(--color-error,#d33)}.mw-parser-output .cs1-visible-error{color:var(--color-error,#d33)}.mw-parser-output .cs1-maint{display:none;color:#085;margin-left:0.3em}.mw-parser-output .cs1-kern-left{padding-left:0.2em}.mw-parser-output .cs1-kern-right{padding-right:0.2em}.mw-parser-output .citation .mw-selflink{font-weight:inherit}@media screen{.mw-parser-output .cs1-format{font-size:95%}html.skin-theme-clientpref-night .mw-parser-output .cs1-maint{color:#18911f}}@media screen and (prefers-color-scheme:dark){html.skin-theme-clientpref-os .mw-parser-output .cs1-maint{color:#18911f}}</style><cite id="CITEREFWebb1992" class="citation book cs1">Webb, E. C. (1992). <span class="id-lock-registration" title="Free registration required"><a rel="nofollow" class="external text" href="https://archive.org/details/enzymenomenclatu0000inte_d6c2"><i>Enzyme nomenclature 1992: recommendations of the Nomenclature Committee of the International Union of Biochemistry and Molecular Biology on the nomenclature and classification of enzymes</i></a></span>. Academic Press. <a href="/wiki/ISBN_(identifier)" class="mw-redirect" title="ISBN (identifier)">ISBN</a> <a href="/wiki/Special:BookSources/978-0-12-227164-9" title="Special:BookSources/978-0-12-227164-9"><bdi>978-0-12-227164-9</bdi></a>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=book&rft.btitle=Enzyme+nomenclature+1992%3A+recommendations+of+the+Nomenclature+Committee+of+the+International+Union+of+Biochemistry+and+Molecular+Biology+on+the+nomenclature+and+classification+of+enzymes&rft.pub=Academic+Press&rft.date=1992&rft.isbn=978-0-12-227164-9&rft.aulast=Webb&rft.aufirst=E.+C.&rft_id=https%3A%2F%2Farchive.org%2Fdetails%2Fenzymenomenclatu0000inte_d6c2&rfr_id=info%3Asid%2Fen.wikipedia.org%3AEnzyme+Commission+number" class="Z3988"></span></span> </li> <li id="cite_note-expasy-2"><span class="mw-cite-backlink">^ <a href="#cite_ref-expasy_2-0"><sup><i><b>a</b></i></sup></a> <a href="#cite_ref-expasy_2-1"><sup><i><b>b</b></i></sup></a></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite class="citation web cs1"><a rel="nofollow" class="external text" href="http://www.expasy.org/enzyme/">"ENZYME (Enzyme nomenclature database)"</a>. ExPASy. <a rel="nofollow" class="external text" href="https://web.archive.org/web/20190321195549/https://enzyme.expasy.org/">Archived</a> from the original on 21 March 2019<span class="reference-accessdate">. Retrieved <span class="nowrap">24 April</span> 2019</span>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=unknown&rft.btitle=ENZYME+%28Enzyme+nomenclature+database%29&rft.pub=ExPASy&rft_id=http%3A%2F%2Fwww.expasy.org%2Fenzyme%2F&rfr_id=info%3Asid%2Fen.wikipedia.org%3AEnzyme+Commission+number" class="Z3988"></span></span> </li> <li id="cite_note-pmid20433725-3"><span class="mw-cite-backlink"><b><a href="#cite_ref-pmid20433725_3-0">^</a></b></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFOmelchenkoGalperinWolfKoonin2010" class="citation journal cs1">Omelchenko MV, Galperin MY, Wolf YI, Koonin EV (2010). <a rel="nofollow" class="external text" href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2876114">"Non-homologous isofunctional enzymes: a systematic analysis of alternative solutions in enzyme evolution"</a>. <i>Biology Direct</i>. <b>5</b> (1): 31. <a href="/wiki/Doi_(identifier)" class="mw-redirect" title="Doi (identifier)">doi</a>:<span class="id-lock-free" title="Freely accessible"><a rel="nofollow" class="external text" href="https://doi.org/10.1186%2F1745-6150-5-31">10.1186/1745-6150-5-31</a></span>. <a href="/wiki/PMC_(identifier)" class="mw-redirect" title="PMC (identifier)">PMC</a> <span class="id-lock-free" title="Freely accessible"><a rel="nofollow" class="external text" href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2876114">2876114</a></span>. <a href="/wiki/PMID_(identifier)" class="mw-redirect" title="PMID (identifier)">PMID</a> <a rel="nofollow" class="external text" href="https://pubmed.ncbi.nlm.nih.gov/20433725">20433725</a>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=article&rft.jtitle=Biology+Direct&rft.atitle=Non-homologous+isofunctional+enzymes%3A+a+systematic+analysis+of+alternative+solutions+in+enzyme+evolution&rft.volume=5&rft.issue=1&rft.pages=31&rft.date=2010&rft_id=https%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fpmc%2Farticles%2FPMC2876114%23id-name%3DPMC&rft_id=info%3Apmid%2F20433725&rft_id=info%3Adoi%2F10.1186%2F1745-6150-5-31&rft.aulast=Omelchenko&rft.aufirst=MV&rft.au=Galperin%2C+MY&rft.au=Wolf%2C+YI&rft.au=Koonin%2C+EV&rft_id=https%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fpmc%2Farticles%2FPMC2876114&rfr_id=info%3Asid%2Fen.wikipedia.org%3AEnzyme+Commission+number" class="Z3988"></span></span> </li> <li id="cite_note-pmid14681372-4"><span class="mw-cite-backlink"><b><a href="#cite_ref-pmid14681372_4-0">^</a></b></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFApweilerBairochWuBarker2004" class="citation journal cs1">Apweiler R, Bairoch A, Wu CH, Barker WC, Boeckmann B, Ferro S, Gasteiger E, Huang H, Lopez R, Magrane M, Martin MJ, Natale DA, O'Donovan C, Redaschi N, Yeh LS (Jan 2004). <a rel="nofollow" class="external text" href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC308865">"UniProt: the Universal Protein knowledgebase"</a>. <i>Nucleic Acids Research</i>. <b>32</b> (Database issue): D115–9. <a href="/wiki/Doi_(identifier)" class="mw-redirect" title="Doi (identifier)">doi</a>:<a rel="nofollow" class="external text" href="https://doi.org/10.1093%2Fnar%2Fgkh131">10.1093/nar/gkh131</a>. <a href="/wiki/PMC_(identifier)" class="mw-redirect" title="PMC (identifier)">PMC</a> <span class="id-lock-free" title="Freely accessible"><a rel="nofollow" class="external text" href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC308865">308865</a></span>. <a href="/wiki/PMID_(identifier)" class="mw-redirect" title="PMID (identifier)">PMID</a> <a rel="nofollow" class="external text" href="https://pubmed.ncbi.nlm.nih.gov/14681372">14681372</a>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=article&rft.jtitle=Nucleic+Acids+Research&rft.atitle=UniProt%3A+the+Universal+Protein+knowledgebase&rft.volume=32&rft.issue=Database+issue&rft.pages=D115-9&rft.date=2004-01&rft_id=https%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fpmc%2Farticles%2FPMC308865%23id-name%3DPMC&rft_id=info%3Apmid%2F14681372&rft_id=info%3Adoi%2F10.1093%2Fnar%2Fgkh131&rft.aulast=Apweiler&rft.aufirst=R&rft.au=Bairoch%2C+A&rft.au=Wu%2C+CH&rft.au=Barker%2C+WC&rft.au=Boeckmann%2C+B&rft.au=Ferro%2C+S&rft.au=Gasteiger%2C+E&rft.au=Huang%2C+H&rft.au=Lopez%2C+R&rft.au=Magrane%2C+M&rft.au=Martin%2C+MJ&rft.au=Natale%2C+DA&rft.au=O%27Donovan%2C+C&rft.au=Redaschi%2C+N&rft.au=Yeh%2C+LS&rft_id=https%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fpmc%2Farticles%2FPMC308865&rfr_id=info%3Asid%2Fen.wikipedia.org%3AEnzyme+Commission+number" class="Z3988"></span></span> </li> <li id="cite_note-moss-5"><span class="mw-cite-backlink">^ <a href="#cite_ref-moss_5-0"><sup><i><b>a</b></i></sup></a> <a href="#cite_ref-moss_5-1"><sup><i><b>b</b></i></sup></a></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFMoss_GP" class="citation web cs1">Moss GP. <a rel="nofollow" class="external text" href="https://web.archive.org/web/20180910045839/http://www.sbcs.qmul.ac.uk/iubmb/enzyme/">"Recommendations of the Nomenclature Committee"</a>. International Union of Biochemistry and Molecular Biology on the Nomenclature and Classification of Enzymes by the Reactions they Catalyse. Archived from <a rel="nofollow" class="external text" href="http://www.sbcs.qmul.ac.uk/iubmb/enzyme/">the original</a> on 2018-09-10<span class="reference-accessdate">. Retrieved <span class="nowrap">2006-03-14</span></span>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=unknown&rft.btitle=Recommendations+of+the+Nomenclature+Committee&rft.pub=International+Union+of+Biochemistry+and+Molecular+Biology+on+the+Nomenclature+and+Classification+of+Enzymes+by+the+Reactions+they+Catalyse&rft.au=Moss+GP&rft_id=http%3A%2F%2Fwww.sbcs.qmul.ac.uk%2Fiubmb%2Fenzyme%2F&rfr_id=info%3Asid%2Fen.wikipedia.org%3AEnzyme+Commission+number" class="Z3988"></span></span> </li> <li id="cite_note-asad-6"><span class="mw-cite-backlink"><b><a href="#cite_ref-asad_6-0">^</a></b></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFRahmanCuestaFurnhamHolliday2014" class="citation journal cs1">Rahman SA, Cuesta SM, Furnham N, Holliday GL, Thornton JM (Feb 2014). <a rel="nofollow" class="external text" href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4122987">"EC-BLAST: a tool to automatically search and compare enzyme reactions"</a>. <i>Nature Methods</i>. <b>11</b> (2): 171–174. <a href="/wiki/Doi_(identifier)" class="mw-redirect" title="Doi (identifier)">doi</a>:<a rel="nofollow" class="external text" href="https://doi.org/10.1038%2Fnmeth.2803">10.1038/nmeth.2803</a>. <a href="/wiki/PMC_(identifier)" class="mw-redirect" title="PMC (identifier)">PMC</a> <span class="id-lock-free" title="Freely accessible"><a rel="nofollow" class="external text" href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4122987">4122987</a></span>. <a href="/wiki/PMID_(identifier)" class="mw-redirect" title="PMID (identifier)">PMID</a> <a rel="nofollow" class="external text" href="https://pubmed.ncbi.nlm.nih.gov/24412978">24412978</a>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=article&rft.jtitle=Nature+Methods&rft.atitle=EC-BLAST%3A+a+tool+to+automatically+search+and+compare+enzyme+reactions&rft.volume=11&rft.issue=2&rft.pages=171-174&rft.date=2014-02&rft_id=https%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fpmc%2Farticles%2FPMC4122987%23id-name%3DPMC&rft_id=info%3Apmid%2F24412978&rft_id=info%3Adoi%2F10.1038%2Fnmeth.2803&rft.aulast=Rahman&rft.aufirst=SA&rft.au=Cuesta%2C+SM&rft.au=Furnham%2C+N&rft.au=Holliday%2C+GL&rft.au=Thornton%2C+JM&rft_id=https%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fpmc%2Farticles%2FPMC4122987&rfr_id=info%3Asid%2Fen.wikipedia.org%3AEnzyme+Commission+number" class="Z3988"></span></span> </li> <li id="cite_note-7"><span class="mw-cite-backlink"><b><a href="#cite_ref-7">^</a></b></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFHoffman-Ostenhof1953" class="citation journal cs1">Hoffman-Ostenhof, O (1953). "Suggestions for a more rational classification and nomenclature of enzymes". <i>Advances in Enzymology and Related Subjects of Biochemistry</i>. <b>14</b>: 219–260. <a href="/wiki/Doi_(identifier)" class="mw-redirect" title="Doi (identifier)">doi</a>:<a rel="nofollow" class="external text" href="https://doi.org/10.1002%2F9780470122594.ch7">10.1002/9780470122594.ch7</a>. <a href="/wiki/ISBN_(identifier)" class="mw-redirect" title="ISBN (identifier)">ISBN</a> <a href="/wiki/Special:BookSources/9780470122594" title="Special:BookSources/9780470122594"><bdi>9780470122594</bdi></a>. <a href="/wiki/PMID_(identifier)" class="mw-redirect" title="PMID (identifier)">PMID</a> <a rel="nofollow" class="external text" href="https://pubmed.ncbi.nlm.nih.gov/13057718">13057718</a>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=article&rft.jtitle=Advances+in+Enzymology+and+Related+Subjects+of+Biochemistry&rft.atitle=Suggestions+for+a+more+rational+classification+and+nomenclature+of+enzymes&rft.volume=14&rft.pages=219-260&rft.date=1953&rft_id=info%3Apmid%2F13057718&rft_id=info%3Adoi%2F10.1002%2F9780470122594.ch7&rft.isbn=9780470122594&rft.aulast=Hoffman-Ostenhof&rft.aufirst=O&rfr_id=info%3Asid%2Fen.wikipedia.org%3AEnzyme+Commission+number" class="Z3988"></span></span> </li> <li id="cite_note-8"><span class="mw-cite-backlink"><b><a href="#cite_ref-8">^</a></b></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFDixonWebb1958" class="citation book cs1">Dixon, M; Webb, E.C. (1958). <i>Enzymes</i>. London: Longmans Green. pp. 183–227.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=book&rft.btitle=Enzymes&rft.place=London&rft.pages=183-227&rft.pub=Longmans+Green&rft.date=1958&rft.aulast=Dixon&rft.aufirst=M&rft.au=Webb%2C+E.C.&rfr_id=info%3Asid%2Fen.wikipedia.org%3AEnzyme+Commission+number" class="Z3988"></span></span> </li> <li id="cite_note-9"><span class="mw-cite-backlink"><b><a href="#cite_ref-9">^</a></b></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFTipton2018" class="citation web cs1">Tipton, Keith (August 2018). <a rel="nofollow" class="external text" href="http://www.enzyme-database.org/news.php">"Enzyme Nomenclature News: Translocases (EC 7): A new EC Class"</a>. ExplorEnz: the primary source of the IUBMB enzyme list. <a rel="nofollow" class="external text" href="https://web.archive.org/web/20180910190358/http://www.enzyme-database.org/news.php">Archived</a> from the original on 10 September 2018<span class="reference-accessdate">. Retrieved <span class="nowrap">3 November</span> 2018</span>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=unknown&rft.btitle=Enzyme+Nomenclature+News%3A+Translocases+%28EC+7%29%3A+A+new+EC+Class&rft.pub=ExplorEnz%3A+the+primary+source+of+the+IUBMB+enzyme+list&rft.date=2018-08&rft.aulast=Tipton&rft.aufirst=Keith&rft_id=http%3A%2F%2Fwww.enzyme-database.org%2Fnews.php&rfr_id=info%3Asid%2Fen.wikipedia.org%3AEnzyme+Commission+number" class="Z3988"></span></span> </li> </ol></div> <div class="mw-heading mw-heading2"><h2 id="External_links">External links</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Enzyme_Commission_number&action=edit&section=7" title="Edit section: External links"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <style data-mw-deduplicate="TemplateStyles:r1235681985">.mw-parser-output .side-box{margin:4px 0;box-sizing:border-box;border:1px solid #aaa;font-size:88%;line-height:1.25em;background-color:var(--background-color-interactive-subtle,#f8f9fa);display:flow-root}.mw-parser-output .side-box-abovebelow,.mw-parser-output .side-box-text{padding:0.25em 0.9em}.mw-parser-output .side-box-image{padding:2px 0 2px 0.9em;text-align:center}.mw-parser-output .side-box-imageright{padding:2px 0.9em 2px 0;text-align:center}@media(min-width:500px){.mw-parser-output .side-box-flex{display:flex;align-items:center}.mw-parser-output .side-box-text{flex:1;min-width:0}}@media(min-width:720px){.mw-parser-output .side-box{width:238px}.mw-parser-output .side-box-right{clear:right;float:right;margin-left:1em}.mw-parser-output .side-box-left{margin-right:1em}}</style><style data-mw-deduplicate="TemplateStyles:r1237033735">@media print{body.ns-0 .mw-parser-output .sistersitebox{display:none!important}}@media screen{html.skin-theme-clientpref-night .mw-parser-output .sistersitebox img[src*="Wiktionary-logo-en-v2.svg"]{background-color:white}}@media screen and (prefers-color-scheme:dark){html.skin-theme-clientpref-os .mw-parser-output .sistersitebox img[src*="Wiktionary-logo-en-v2.svg"]{background-color:white}}</style><div class="side-box side-box-right plainlinks sistersitebox"><style data-mw-deduplicate="TemplateStyles:r1126788409">.mw-parser-output .plainlist ol,.mw-parser-output .plainlist ul{line-height:inherit;list-style:none;margin:0;padding:0}.mw-parser-output .plainlist ol li,.mw-parser-output .plainlist ul li{margin-bottom:0}</style> <div class="side-box-flex"> <div class="side-box-image"><span class="noviewer" typeof="mw:File"><span><img alt="" src="//upload.wikimedia.org/wikipedia/commons/thumb/f/ff/Wikidata-logo.svg/40px-Wikidata-logo.svg.png" decoding="async" width="40" height="22" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/f/ff/Wikidata-logo.svg/60px-Wikidata-logo.svg.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/f/ff/Wikidata-logo.svg/80px-Wikidata-logo.svg.png 2x" data-file-width="1050" data-file-height="590" /></span></span></div> <div class="side-box-text plainlist"><a href="/wiki/Wikidata" title="Wikidata">Wikidata</a> has the property: <ul><li><span class="mw-valign-middle" typeof="mw:File"><span><img alt="" src="//upload.wikimedia.org/wikipedia/commons/thumb/a/a8/Disc_Plain_blue_dark.svg/4px-Disc_Plain_blue_dark.svg.png" decoding="async" width="4" height="4" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/a/a8/Disc_Plain_blue_dark.svg/6px-Disc_Plain_blue_dark.svg.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/a/a8/Disc_Plain_blue_dark.svg/8px-Disc_Plain_blue_dark.svg.png 2x" data-file-width="460" data-file-height="460" /></span></span> <b><i><a href="https://www.wikidata.org/wiki/Property_talk:P591" class="extiw" title="d:Property talk:P591">EC enzyme number (P591)</a></i></b> (see <span class="plainlinks"><a class="external text" href="https://query.wikidata.org/embed.html#SELECT%20%3FWikidata_item_%20%3FWikidata_item_Label%20%3Fvalue%20%3FvalueLabel%20%3FEnglish_Wikipedia_article%20%23Show%20data%20in%20this%20order%0A%7B%0A%09%3FWikidata_item_%20wdt%3AP591%20%3Fvalue%20.%20%23Collecting%20all%20items%20which%20have%20P591%20data%2C%20from%20whole%20Wikidata%20item%20pages%0A%09OPTIONAL%20%7B%3FEnglish_Wikipedia_article%20schema%3Aabout%20%3FWikidata_item_%3B%20schema%3AisPartOf%20%3Chttps%3A%2F%2Fen.wikipedia.org%2F%3E%20.%7D%20%23If%20collected%20item%20has%20link%20to%20English%20Wikipedia%2C%20show%20that%0A%09SERVICE%20wikibase%3Alabel%20%7B%20bd%3AserviceParam%20wikibase%3Alanguage%20%22en%22%20%20%7D%20%23Show%20label%20in%20this%20language.%20%22en%22%20is%20English.%20%20%20%0A%7D%0ALIMIT%201000">uses</a></span>)</li></ul></div></div> </div> <ul><li><a rel="nofollow" class="external text" href="https://www.qmul.ac.uk/sbcs/iubmb/enzyme/">Enzyme Nomenclature</a>, authoritative website by the Nomenclature Committee of the International Union of Biochemistry and Molecular Biology, maintained by G.P. Moss</li> <li><a rel="nofollow" class="external text" href="https://enzyme.expasy.org/">Enzyme nomenclature database</a> — by <a href="/wiki/ExPASy" class="mw-redirect" title="ExPASy">ExPASy</a></li> <li><a rel="nofollow" class="external text" href="http://www.brenda-enzymes.org/all_enzymes.php">List of all EC numbers </a> — by <a href="/wiki/BRENDA" title="BRENDA">BRENDA</a></li> <li><a rel="nofollow" class="external text" href="http://www.pdbe.org/ec">Browse PDB structures by EC number</a></li> <li><a rel="nofollow" class="external text" href="http://supfam.org/SUPERFAMILY/cgi-bin/dcbo.cgi?type=EC;po=root">Browse SCOP domains by EC number</a> — by <a href="/wiki/DcGO" title="DcGO">dcGO</a></li> <li><a rel="nofollow" class="external text" href="http://www.ebi.ac.uk/thornton-srv/software/rbl/">Compare EC numbers using EC-Blast</a> <a rel="nofollow" class="external text" href="https://web.archive.org/web/20190530132101/http://www.ebi.ac.uk/thornton-srv/software/rbl/">Archived</a> 2019-05-30 at the <a href="/wiki/Wayback_Machine" title="Wayback Machine">Wayback Machine</a></li></ul> <div class="navbox-styles"><style data-mw-deduplicate="TemplateStyles:r1129693374">.mw-parser-output .hlist dl,.mw-parser-output .hlist ol,.mw-parser-output .hlist ul{margin:0;padding:0}.mw-parser-output .hlist dd,.mw-parser-output .hlist dt,.mw-parser-output .hlist li{margin:0;display:inline}.mw-parser-output .hlist.inline,.mw-parser-output .hlist.inline dl,.mw-parser-output .hlist.inline ol,.mw-parser-output .hlist.inline ul,.mw-parser-output .hlist dl dl,.mw-parser-output .hlist dl ol,.mw-parser-output .hlist dl ul,.mw-parser-output .hlist ol dl,.mw-parser-output .hlist ol ol,.mw-parser-output .hlist ol ul,.mw-parser-output .hlist ul dl,.mw-parser-output .hlist ul ol,.mw-parser-output .hlist ul ul{display:inline}.mw-parser-output .hlist .mw-empty-li{display:none}.mw-parser-output .hlist dt::after{content:": "}.mw-parser-output .hlist dd::after,.mw-parser-output .hlist li::after{content:" · ";font-weight:bold}.mw-parser-output .hlist dd:last-child::after,.mw-parser-output .hlist dt:last-child::after,.mw-parser-output .hlist li:last-child::after{content:none}.mw-parser-output .hlist dd dd:first-child::before,.mw-parser-output .hlist dd dt:first-child::before,.mw-parser-output .hlist dd li:first-child::before,.mw-parser-output .hlist dt dd:first-child::before,.mw-parser-output .hlist dt dt:first-child::before,.mw-parser-output .hlist dt li:first-child::before,.mw-parser-output .hlist li dd:first-child::before,.mw-parser-output .hlist li dt:first-child::before,.mw-parser-output .hlist li li:first-child::before{content:" (";font-weight:normal}.mw-parser-output .hlist dd dd:last-child::after,.mw-parser-output .hlist dd dt:last-child::after,.mw-parser-output .hlist dd li:last-child::after,.mw-parser-output .hlist dt dd:last-child::after,.mw-parser-output .hlist dt dt:last-child::after,.mw-parser-output .hlist dt li:last-child::after,.mw-parser-output .hlist li dd:last-child::after,.mw-parser-output .hlist li dt:last-child::after,.mw-parser-output .hlist li li:last-child::after{content:")";font-weight:normal}.mw-parser-output .hlist ol{counter-reset:listitem}.mw-parser-output .hlist ol>li{counter-increment:listitem}.mw-parser-output .hlist ol>li::before{content:" "counter(listitem)"\a0 "}.mw-parser-output .hlist dd ol>li:first-child::before,.mw-parser-output .hlist dt ol>li:first-child::before,.mw-parser-output .hlist li ol>li:first-child::before{content:" ("counter(listitem)"\a0 "}</style><style data-mw-deduplicate="TemplateStyles:r1236075235">.mw-parser-output .navbox{box-sizing:border-box;border:1px solid #a2a9b1;width:100%;clear:both;font-size:88%;text-align:center;padding:1px;margin:1em auto 0}.mw-parser-output .navbox .navbox{margin-top:0}.mw-parser-output .navbox+.navbox,.mw-parser-output .navbox+.navbox-styles+.navbox{margin-top:-1px}.mw-parser-output .navbox-inner,.mw-parser-output .navbox-subgroup{width:100%}.mw-parser-output .navbox-group,.mw-parser-output .navbox-title,.mw-parser-output .navbox-abovebelow{padding:0.25em 1em;line-height:1.5em;text-align:center}.mw-parser-output .navbox-group{white-space:nowrap;text-align:right}.mw-parser-output .navbox,.mw-parser-output .navbox-subgroup{background-color:#fdfdfd}.mw-parser-output .navbox-list{line-height:1.5em;border-color:#fdfdfd}.mw-parser-output .navbox-list-with-group{text-align:left;border-left-width:2px;border-left-style:solid}.mw-parser-output tr+tr>.navbox-abovebelow,.mw-parser-output tr+tr>.navbox-group,.mw-parser-output tr+tr>.navbox-image,.mw-parser-output tr+tr>.navbox-list{border-top:2px solid #fdfdfd}.mw-parser-output .navbox-title{background-color:#ccf}.mw-parser-output .navbox-abovebelow,.mw-parser-output .navbox-group,.mw-parser-output .navbox-subgroup .navbox-title{background-color:#ddf}.mw-parser-output .navbox-subgroup .navbox-group,.mw-parser-output .navbox-subgroup .navbox-abovebelow{background-color:#e6e6ff}.mw-parser-output .navbox-even{background-color:#f7f7f7}.mw-parser-output .navbox-odd{background-color:transparent}.mw-parser-output .navbox .hlist td dl,.mw-parser-output .navbox .hlist td ol,.mw-parser-output .navbox .hlist td ul,.mw-parser-output .navbox td.hlist dl,.mw-parser-output .navbox td.hlist ol,.mw-parser-output .navbox td.hlist ul{padding:0.125em 0}.mw-parser-output .navbox .navbar{display:block;font-size:100%}.mw-parser-output .navbox-title .navbar{float:left;text-align:left;margin-right:0.5em}body.skin--responsive .mw-parser-output .navbox-image img{max-width:none!important}@media print{body.ns-0 .mw-parser-output .navbox{display:none!important}}</style></div><div role="navigation" class="navbox" aria-labelledby="Enzymes" style="padding:3px"><table class="nowraplinks mw-collapsible autocollapse navbox-inner" style="border-spacing:0;background:transparent;color:inherit"><tbody><tr><th scope="col" class="navbox-title" colspan="2"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1129693374"><style data-mw-deduplicate="TemplateStyles:r1239400231">.mw-parser-output .navbar{display:inline;font-size:88%;font-weight:normal}.mw-parser-output .navbar-collapse{float:left;text-align:left}.mw-parser-output .navbar-boxtext{word-spacing:0}.mw-parser-output .navbar ul{display:inline-block;white-space:nowrap;line-height:inherit}.mw-parser-output .navbar-brackets::before{margin-right:-0.125em;content:"[ "}.mw-parser-output .navbar-brackets::after{margin-left:-0.125em;content:" ]"}.mw-parser-output .navbar li{word-spacing:-0.125em}.mw-parser-output .navbar a>span,.mw-parser-output .navbar a>abbr{text-decoration:inherit}.mw-parser-output .navbar-mini abbr{font-variant:small-caps;border-bottom:none;text-decoration:none;cursor:inherit}.mw-parser-output .navbar-ct-full{font-size:114%;margin:0 7em}.mw-parser-output .navbar-ct-mini{font-size:114%;margin:0 4em}html.skin-theme-clientpref-night .mw-parser-output .navbar li a abbr{color:var(--color-base)!important}@media(prefers-color-scheme:dark){html.skin-theme-clientpref-os .mw-parser-output .navbar li a abbr{color:var(--color-base)!important}}@media print{.mw-parser-output .navbar{display:none!important}}</style><div class="navbar plainlinks hlist navbar-mini"><ul><li class="nv-view"><a href="/wiki/Template:Enzymes" title="Template:Enzymes"><abbr title="View this template">v</abbr></a></li><li class="nv-talk"><a href="/wiki/Template_talk:Enzymes" title="Template talk:Enzymes"><abbr title="Discuss this template">t</abbr></a></li><li class="nv-edit"><a href="/wiki/Special:EditPage/Template:Enzymes" title="Special:EditPage/Template:Enzymes"><abbr title="Edit this template">e</abbr></a></li></ul></div><div id="Enzymes" style="font-size:114%;margin:0 4em"><a href="/wiki/Enzyme" title="Enzyme">Enzymes</a></div></th></tr><tr><th scope="row" class="navbox-group" style="width:1%">Activity</th><td class="navbox-list-with-group navbox-list navbox-odd hlist" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Active_site" title="Active site">Active site</a></li> <li><a href="/wiki/Binding_site" title="Binding site">Binding site</a></li> <li><a href="/wiki/Catalytic_triad" title="Catalytic triad">Catalytic triad</a></li> <li><a href="/wiki/Oxyanion_hole" title="Oxyanion hole">Oxyanion hole</a></li> <li><a href="/wiki/Enzyme_promiscuity" title="Enzyme promiscuity">Enzyme promiscuity</a></li> <li><a href="/wiki/Diffusion-limited_enzyme" title="Diffusion-limited enzyme">Diffusion-limited enzyme</a></li> <li><a href="/wiki/Cofactor_(biochemistry)" title="Cofactor (biochemistry)">Cofactor</a></li> <li><a href="/wiki/Enzyme_catalysis" title="Enzyme catalysis">Enzyme catalysis</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%">Regulation</th><td class="navbox-list-with-group navbox-list navbox-even hlist" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Allosteric_regulation" title="Allosteric regulation">Allosteric regulation</a></li> <li><a href="/wiki/Cooperativity" title="Cooperativity">Cooperativity</a></li> <li><a href="/wiki/Enzyme_inhibitor" title="Enzyme inhibitor">Enzyme inhibitor</a></li> <li><a href="/wiki/Enzyme_activator" title="Enzyme activator">Enzyme activator</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%">Classification</th><td class="navbox-list-with-group navbox-list navbox-odd hlist" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a class="mw-selflink selflink">EC number</a></li> <li><a href="/wiki/Protein_superfamily" title="Protein superfamily">Enzyme superfamily</a></li> <li><a href="/wiki/Protein_family" title="Protein family">Enzyme family</a></li> <li><a href="/wiki/List_of_enzymes" title="List of enzymes">List of enzymes</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%">Kinetics</th><td class="navbox-list-with-group navbox-list navbox-even hlist" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Enzyme_kinetics" title="Enzyme kinetics">Enzyme kinetics</a></li> <li><a href="/wiki/Eadie%E2%80%93Hofstee_diagram" title="Eadie–Hofstee diagram">Eadie–Hofstee diagram</a></li> <li><a href="/wiki/Hanes%E2%80%93Woolf_plot" title="Hanes–Woolf plot">Hanes–Woolf plot</a></li> <li><a href="/wiki/Lineweaver%E2%80%93Burk_plot" title="Lineweaver–Burk plot">Lineweaver–Burk plot</a></li> <li><a href="/wiki/Michaelis%E2%80%93Menten_kinetics" title="Michaelis–Menten kinetics">Michaelis–Menten kinetics</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%">Types</th><td class="navbox-list-with-group navbox-list navbox-odd hlist" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><b>EC1 <a href="/wiki/Oxidoreductase" title="Oxidoreductase">Oxidoreductases</a></b> (<a href="/wiki/List_of_EC_numbers_(EC_1)" title="List of EC numbers (EC 1)">list</a>)</li> <li><b>EC2 <a href="/wiki/Transferase" title="Transferase">Transferases</a></b> (<a href="/wiki/List_of_EC_numbers_(EC_2)" title="List of EC numbers (EC 2)">list</a>)</li> <li><b>EC3 <a href="/wiki/Hydrolase" title="Hydrolase">Hydrolases</a></b> (<a href="/wiki/List_of_EC_numbers_(EC_3)" title="List of EC numbers (EC 3)">list</a>)</li> <li><b>EC4 <a href="/wiki/Lyase" title="Lyase">Lyases</a></b> (<a href="/wiki/List_of_EC_numbers_(EC_4)" title="List of EC numbers (EC 4)">list</a>)</li> <li><b>EC5 <a href="/wiki/Isomerase" title="Isomerase">Isomerases</a></b> (<a href="/wiki/List_of_EC_numbers_(EC_5)" title="List of EC numbers (EC 5)">list</a>)</li> <li><b>EC6 <a href="/wiki/Ligase" title="Ligase">Ligases</a></b> (<a href="/wiki/List_of_EC_numbers_(EC_6)" title="List of EC numbers (EC 6)">list</a>)</li> <li><b>EC7 <a href="/wiki/Translocase" title="Translocase">Translocases</a></b> (<a href="/wiki/List_of_EC_numbers_(EC_7)" title="List of EC numbers (EC 7)">list</a>)</li></ul> </div></td></tr></tbody></table></div> <style data-mw-deduplicate="TemplateStyles:r1130092004">.mw-parser-output .portal-bar{font-size:88%;font-weight:bold;display:flex;justify-content:center;align-items:baseline}.mw-parser-output .portal-bar-bordered{padding:0 2em;background-color:#fdfdfd;border:1px solid #a2a9b1;clear:both;margin:1em auto 0}.mw-parser-output .portal-bar-related{font-size:100%;justify-content:flex-start}.mw-parser-output .portal-bar-unbordered{padding:0 1.7em;margin-left:0}.mw-parser-output .portal-bar-header{margin:0 1em 0 0.5em;flex:0 0 auto;min-height:24px}.mw-parser-output .portal-bar-content{display:flex;flex-flow:row wrap;flex:0 1 auto;padding:0.15em 0;column-gap:1em;align-items:baseline;margin:0;list-style:none}.mw-parser-output .portal-bar-content-related{margin:0;list-style:none}.mw-parser-output .portal-bar-item{display:inline-block;margin:0.15em 0.2em;min-height:24px;line-height:24px}@media screen and (max-width:768px){.mw-parser-output .portal-bar{font-size:88%;font-weight:bold;display:flex;flex-flow:column wrap;align-items:baseline}.mw-parser-output .portal-bar-header{text-align:center;flex:0;padding-left:0.5em;margin:0 auto}.mw-parser-output .portal-bar-related{font-size:100%;align-items:flex-start}.mw-parser-output .portal-bar-content{display:flex;flex-flow:row wrap;align-items:center;flex:0;column-gap:1em;border-top:1px solid #a2a9b1;margin:0 auto;list-style:none}.mw-parser-output .portal-bar-content-related{border-top:none;margin:0;list-style:none}}.mw-parser-output .navbox+link+.portal-bar,.mw-parser-output .navbox+style+.portal-bar,.mw-parser-output .navbox+link+.portal-bar-bordered,.mw-parser-output .navbox+style+.portal-bar-bordered,.mw-parser-output .sister-bar+link+.portal-bar,.mw-parser-output .sister-bar+style+.portal-bar,.mw-parser-output .portal-bar+.navbox-styles+.navbox,.mw-parser-output .portal-bar+.navbox-styles+.sister-bar{margin-top:-1px}</style><div class="portal-bar noprint metadata noviewer portal-bar-unbordered" role="navigation" aria-label="Portals"><span class="portal-bar-header"><a href="/wiki/Wikipedia:Contents/Portals" title="Wikipedia:Contents/Portals">Portal</a>:</span><ul class="portal-bar-content"><li class="portal-bar-item"><span class="nowrap"><span typeof="mw:File"><a href="/wiki/File:Issoria_lathonia.jpg" class="mw-file-description"><img alt="icon" src="//upload.wikimedia.org/wikipedia/commons/thumb/2/2d/Issoria_lathonia.jpg/21px-Issoria_lathonia.jpg" decoding="async" width="21" height="15" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/2/2d/Issoria_lathonia.jpg/32px-Issoria_lathonia.jpg 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/2/2d/Issoria_lathonia.jpg/42px-Issoria_lathonia.jpg 2x" data-file-width="629" data-file-height="445" /></a></span> </span><a href="/wiki/Portal:Biology" title="Portal:Biology">Biology</a></li></ul></div> <!-- NewPP limit report Parsed by mw‐web.eqiad.main‐5dc468848‐kl49z Cached time: 20241122140925 Cache expiry: 2592000 Reduced expiry: false Complications: [vary‐revision‐sha1, show‐toc] CPU time usage: 0.358 seconds Real time usage: 0.477 seconds Preprocessor visited node count: 918/1000000 Post‐expand include size: 38711/2097152 bytes Template argument size: 1474/2097152 bytes Highest expansion depth: 9/100 Expensive parser function count: 3/500 Unstrip recursion depth: 1/20 Unstrip post‐expand size: 47975/5000000 bytes Lua time usage: 0.244/10.000 seconds Lua memory usage: 4999134/52428800 bytes Number of Wikibase entities loaded: 0/400 --> <!-- Transclusion expansion time report (%,ms,calls,template) 100.00% 419.250 1 -total 34.97% 146.606 1 Template:Reflist 21.79% 91.374 1 Template:Enzymes 21.19% 88.855 1 Template:Navbox 20.92% 87.713 2 Template:Cite_book 17.62% 73.880 1 Template:Short_description 9.96% 41.761 2 Template:Pagetype 8.67% 36.347 1 Template:Portal_bar 7.79% 32.665 1 Template:Wikidata_property 7.26% 30.450 1 Template:Sister_project --> <!-- Saved in parser cache with key enwiki:pcache:idhash:194690-0!canonical and timestamp 20241122140925 and revision id 1233499650. Rendering was triggered because: page-view --> </div><!--esi <esi:include src="/esitest-fa8a495983347898/content" /> --><noscript><img src="https://login.wikimedia.org/wiki/Special:CentralAutoLogin/start?type=1x1" alt="" width="1" height="1" style="border: none; position: absolute;"></noscript> <div class="printfooter" data-nosnippet="">Retrieved from "<a dir="ltr" href="https://en.wikipedia.org/w/index.php?title=Enzyme_Commission_number&oldid=1233499650">https://en.wikipedia.org/w/index.php?title=Enzyme_Commission_number&oldid=1233499650</a>"</div></div> <div id="catlinks" class="catlinks" data-mw="interface"><div id="mw-normal-catlinks" class="mw-normal-catlinks"><a href="/wiki/Help:Category" title="Help:Category">Categories</a>: <ul><li><a href="/wiki/Category:Enzymes_by_function" title="Category:Enzymes by function">Enzymes by function</a></li><li><a href="/wiki/Category:Bioinformatics" title="Category:Bioinformatics">Bioinformatics</a></li><li><a href="/wiki/Category:Cheminformatics" title="Category:Cheminformatics">Cheminformatics</a></li><li><a href="/wiki/Category:Chemical_numbering_schemes" title="Category:Chemical numbering schemes">Chemical numbering schemes</a></li></ul></div><div id="mw-hidden-catlinks" class="mw-hidden-catlinks mw-hidden-cats-hidden">Hidden categories: <ul><li><a href="/wiki/Category:Articles_with_short_description" title="Category:Articles with short description">Articles with short description</a></li><li><a href="/wiki/Category:Short_description_is_different_from_Wikidata" title="Category:Short description is different from Wikidata">Short description is different from Wikidata</a></li><li><a href="/wiki/Category:Webarchive_template_wayback_links" title="Category:Webarchive template wayback links">Webarchive template wayback links</a></li></ul></div></div> </div> </main> </div> <div class="mw-footer-container"> <footer id="footer" class="mw-footer" > <ul id="footer-info"> <li id="footer-info-lastmod"> This page was last edited on 9 July 2024, at 11:45<span class="anonymous-show"> (UTC)</span>.</li> <li id="footer-info-copyright">Text is available under the <a href="/wiki/Wikipedia:Text_of_the_Creative_Commons_Attribution-ShareAlike_4.0_International_License" title="Wikipedia:Text of the Creative Commons Attribution-ShareAlike 4.0 International License">Creative Commons Attribution-ShareAlike 4.0 License</a>; additional terms may apply. By using this site, you agree to the <a href="https://foundation.wikimedia.org/wiki/Special:MyLanguage/Policy:Terms_of_Use" class="extiw" title="foundation:Special:MyLanguage/Policy:Terms of Use">Terms of Use</a> and <a href="https://foundation.wikimedia.org/wiki/Special:MyLanguage/Policy:Privacy_policy" class="extiw" title="foundation:Special:MyLanguage/Policy:Privacy policy">Privacy Policy</a>. Wikipedia® is a registered trademark of the <a rel="nofollow" class="external text" href="https://wikimediafoundation.org/">Wikimedia Foundation, Inc.</a>, a non-profit organization.</li> </ul> <ul id="footer-places"> <li id="footer-places-privacy"><a href="https://foundation.wikimedia.org/wiki/Special:MyLanguage/Policy:Privacy_policy">Privacy policy</a></li> <li id="footer-places-about"><a href="/wiki/Wikipedia:About">About Wikipedia</a></li> <li id="footer-places-disclaimers"><a href="/wiki/Wikipedia:General_disclaimer">Disclaimers</a></li> <li id="footer-places-contact"><a href="//en.wikipedia.org/wiki/Wikipedia:Contact_us">Contact Wikipedia</a></li> <li id="footer-places-wm-codeofconduct"><a href="https://foundation.wikimedia.org/wiki/Special:MyLanguage/Policy:Universal_Code_of_Conduct">Code of Conduct</a></li> <li id="footer-places-developers"><a href="https://developer.wikimedia.org">Developers</a></li> <li id="footer-places-statslink"><a href="https://stats.wikimedia.org/#/en.wikipedia.org">Statistics</a></li> <li id="footer-places-cookiestatement"><a href="https://foundation.wikimedia.org/wiki/Special:MyLanguage/Policy:Cookie_statement">Cookie statement</a></li> <li id="footer-places-mobileview"><a href="//en.m.wikipedia.org/w/index.php?title=Enzyme_Commission_number&mobileaction=toggle_view_mobile" class="noprint stopMobileRedirectToggle">Mobile view</a></li> </ul> <ul id="footer-icons" class="noprint"> <li id="footer-copyrightico"><a href="https://wikimediafoundation.org/" class="cdx-button cdx-button--fake-button cdx-button--size-large cdx-button--fake-button--enabled"><img src="/static/images/footer/wikimedia-button.svg" width="84" height="29" alt="Wikimedia Foundation" loading="lazy"></a></li> <li id="footer-poweredbyico"><a href="https://www.mediawiki.org/" class="cdx-button cdx-button--fake-button cdx-button--size-large cdx-button--fake-button--enabled"><img src="/w/resources/assets/poweredby_mediawiki.svg" alt="Powered by MediaWiki" width="88" height="31" loading="lazy"></a></li> </ul> </footer> </div> </div> </div> <div class="vector-settings" id="p-dock-bottom"> <ul></ul> </div><script>(RLQ=window.RLQ||[]).push(function(){mw.config.set({"wgHostname":"mw-web.codfw.main-f69cdc8f6-jvw68","wgBackendResponseTime":134,"wgPageParseReport":{"limitreport":{"cputime":"0.358","walltime":"0.477","ppvisitednodes":{"value":918,"limit":1000000},"postexpandincludesize":{"value":38711,"limit":2097152},"templateargumentsize":{"value":1474,"limit":2097152},"expansiondepth":{"value":9,"limit":100},"expensivefunctioncount":{"value":3,"limit":500},"unstrip-depth":{"value":1,"limit":20},"unstrip-size":{"value":47975,"limit":5000000},"entityaccesscount":{"value":0,"limit":400},"timingprofile":["100.00% 419.250 1 -total"," 34.97% 146.606 1 Template:Reflist"," 21.79% 91.374 1 Template:Enzymes"," 21.19% 88.855 1 Template:Navbox"," 20.92% 87.713 2 Template:Cite_book"," 17.62% 73.880 1 Template:Short_description"," 9.96% 41.761 2 Template:Pagetype"," 8.67% 36.347 1 Template:Portal_bar"," 7.79% 32.665 1 Template:Wikidata_property"," 7.26% 30.450 1 Template:Sister_project"]},"scribunto":{"limitreport-timeusage":{"value":"0.244","limit":"10.000"},"limitreport-memusage":{"value":4999134,"limit":52428800}},"cachereport":{"origin":"mw-web.eqiad.main-5dc468848-kl49z","timestamp":"20241122140925","ttl":2592000,"transientcontent":false}}});});</script> <script type="application/ld+json">{"@context":"https:\/\/schema.org","@type":"Article","name":"Enzyme Commission number","url":"https:\/\/en.wikipedia.org\/wiki\/Enzyme_Commission_number","sameAs":"http:\/\/www.wikidata.org\/entity\/Q741108","mainEntity":"http:\/\/www.wikidata.org\/entity\/Q741108","author":{"@type":"Organization","name":"Contributors to Wikimedia projects"},"publisher":{"@type":"Organization","name":"Wikimedia Foundation, Inc.","logo":{"@type":"ImageObject","url":"https:\/\/www.wikimedia.org\/static\/images\/wmf-hor-googpub.png"}},"datePublished":"2003-03-11T03:52:02Z","dateModified":"2024-07-09T11:45:01Z","headline":"hierarchical classification ID given to enzymes, identifying their membership in families"}</script> </body> </html>