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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">Protein-coding gene in the species Homo sapiens</div> <table class="infobox" style="width:26.4em"><tbody><tr><th colspan="4" style="text-align:center;font-size:125%;font-weight:bold">HCN4</th></tr><tr><td colspan="4" style="text-align:center"><span typeof="mw:File"><a href="/wiki/File:Protein_HCN4_PDB_1q3e.png" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/6/6d/Protein_HCN4_PDB_1q3e.png/250px-Protein_HCN4_PDB_1q3e.png" decoding="async" width="250" height="124" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/6/6d/Protein_HCN4_PDB_1q3e.png/375px-Protein_HCN4_PDB_1q3e.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/6/6d/Protein_HCN4_PDB_1q3e.png/500px-Protein_HCN4_PDB_1q3e.png 2x" data-file-width="953" data-file-height="474" /></a></span></td></tr><tr><td colspan="4" style="text-align:center;background-color:light-dark(#eee, #27292d) !important;color:inherit"><table style="padding:0;border:none;margin:0;width:100%;text-align:left"><tbody><tr><th colspan="4" style="text-align:center;background-color:light-dark(#ddd, #404244) !important;color:inherit">Available structures</th></tr><tr><th rowspan="2" style="background-color:light-dark(#c3fdb8, #003500) !important;color:inherit;width:43px"><a href="/wiki/Protein_Data_Bank" title="Protein Data Bank">PDB</a></th><td colspan="2" style="background-color:light-dark(#eee, #27292d) !important;color:inherit">Ortholog search: <span class="plainlinks"><a rel="nofollow" class="external text" href="https://www.ebi.ac.uk/pdbe/searchResults.html?display=both&term=O70507%20or%20B2RY58%20or%20Q9Y3Q4">PDBe</a> <a rel="nofollow" class="external text" href="https://www.rcsb.org/search?q=rcsb_polymer_entity_container_identifiers.reference_sequence_identifiers.database_name:UniProt%20AND%20rcsb_polymer_entity_container_identifiers.reference_sequence_identifiers.database_accession:O70507,B2RY58,Q9Y3Q4">RCSB</a> </span></td></tr><tr><td><table class="collapsible collapsed" style="padding:0;border:none;margin:0;width:100%;text-align:left"><tbody><tr style="text-align:center"><th colspan="2" style="background-color:light-dark(#ddd, #404244) !important;color:inherit">List of PDB id codes</th></tr><tr><td colspan="2" style="background-color:light-dark(#eee, #27292d) !important;color:inherit"><p><span class="plainlinks"><a rel="nofollow" class="external text" href="https://www.rcsb.org/structure/2MNG">2MNG</a>, <a rel="nofollow" class="external text" href="https://www.rcsb.org/structure/3OTF">3OTF</a>, <a rel="nofollow" class="external text" href="https://www.rcsb.org/structure/3U11">3U11</a>, <a rel="nofollow" class="external text" href="https://www.rcsb.org/structure/4HBN">4HBN</a>, <a rel="nofollow" class="external text" href="https://www.rcsb.org/structure/4KL1">4KL1</a>, <a rel="nofollow" class="external text" href="https://www.rcsb.org/structure/4NVP">4NVP</a></span></p></td></tr></tbody></table></td></tr></tbody></table></td></tr><tr><th colspan="4" style="text-align:center;background-color:light-dark(#ddd, #404244) !important;color:inherit">Identifiers</th></tr><tr><th scope="row" style="background-color:light-dark(#c3fdb8, #003500) !important;color:inherit"><span class="plainlinks"><a href="/wiki/Gene_nomenclature" title="Gene nomenclature">Aliases</a></span></th><td colspan="3" style="background:light-dark(#eee, #27292d) !important;color:inherit"><span class="plainlinks"><a rel="nofollow" class="external text" href="https://www.genenames.org/data/gene-symbol-report/#!/hgnc_id/16882">HCN4</a></span>, SSS2, hyperpolarization activated cyclic nucleotide gated potassium channel 4, BRGDA8, EIG18</td></tr><tr><th scope="row" style="background-color:light-dark(#c3fdb8, #003500) !important;color:inherit">External IDs</th><td colspan="3" style="background-color:light-dark(#eee, #27292d) !important;color:inherit"><span class="plainlinks"><a href="/wiki/Mendelian_Inheritance_in_Man" class="mw-redirect" title="Mendelian Inheritance in Man">OMIM</a>: <a rel="nofollow" class="external text" href="https://omim.org/entry/605206">605206</a>; <a href="/wiki/Mouse_Genome_Informatics" title="Mouse Genome Informatics">MGI</a>: <a rel="nofollow" class="external text" href="http://www.informatics.jax.org/marker/MGI:1298209">1298209</a>; <a href="/wiki/HomoloGene" title="HomoloGene">HomoloGene</a>: <a rel="nofollow" class="external text" href="https://www.ncbi.nlm.nih.gov/entrez/query.fcgi?cmd=Retrieve&db=homologene&dopt=HomoloGene&list_uids=3997">3997</a>; <a href="/wiki/GeneCards" title="GeneCards">GeneCards</a>: <a rel="nofollow" class="external text" href="https://www.genecards.org/cgi-bin/carddisp.pl?gene=HCN4">HCN4</a>; <a href="/wiki/Orthologous_MAtrix" title="Orthologous MAtrix">OMA</a>:<a rel="nofollow" class="external text" href="https://omabrowser.org/oma/vps/ENSG00000138622">HCN4 - orthologs</a></span></td></tr><tr><td colspan="4" style="text-align:center;background-color:light-dark(#eee, #27292d) !important;color:inherit"><table class="collapsible collapsed" style="padding:0;border:none;margin:0;width:100%;text-align:left"><tbody><tr><th colspan="4" style="text-align:center;background-color:light-dark(#ddd, #404244) !important;color:inherit">Gene location (<a href="/wiki/Human_genome" title="Human genome">Human</a>)</th></tr><tr><td colspan="4" style="text-align:center;background-color:light-dark(#eee, #27292d) !important;color:inherit"><span typeof="mw:File"><a href="/wiki/File:Ideogram_human_chromosome_15.svg" class="mw-file-description" title="Chromosome 15 (human)"><img alt="Chromosome 15 (human)" src="//upload.wikimedia.org/wikipedia/commons/thumb/0/07/Ideogram_human_chromosome_15.svg/300px-Ideogram_human_chromosome_15.svg.png" decoding="async" width="300" height="120" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/0/07/Ideogram_human_chromosome_15.svg/450px-Ideogram_human_chromosome_15.svg.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/0/07/Ideogram_human_chromosome_15.svg/600px-Ideogram_human_chromosome_15.svg.png 2x" data-file-width="474" data-file-height="189" /></a></span></td></tr><tr><th scope="row" width="15%" style="background-color:light-dark(#c3fdb8, #003500) !important;color:inherit"><a href="/wiki/Chromosome" title="Chromosome">Chr.</a></th><td colspan="3" width="85%" style="background-color:light-dark(#eee, #27292d) !important;color:inherit"><span class="plainlinks"><a href="/wiki/Chromosome_15_(human)" class="mw-redirect" title="Chromosome 15 (human)">Chromosome 15 (human)</a><sup id="cite_ref-refGRCh38Ensembl_1-0" class="reference"><a href="#cite_note-refGRCh38Ensembl-1"><span class="cite-bracket">[</span>1<span class="cite-bracket">]</span></a></sup></span></td></tr><tr><td colspan="4" style="text-align:center;background-color:light-dark(#eee, #27292d) !important;color:inherit"><div align="center"><div style="position: relative; width: 300px;"><span typeof="mw:File"><a href="/wiki/File:Human_chromosome_15_ideogram.svg" class="mw-file-description" title="Chromosome 15 (human)"><img alt="Chromosome 15 (human)" src="//upload.wikimedia.org/wikipedia/commons/thumb/5/5c/Human_chromosome_15_ideogram.svg/300px-Human_chromosome_15_ideogram.svg.png" decoding="async" width="300" height="58" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/5/5c/Human_chromosome_15_ideogram.svg/450px-Human_chromosome_15_ideogram.svg.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/5/5c/Human_chromosome_15_ideogram.svg/600px-Human_chromosome_15_ideogram.svg.png 2x" data-file-width="1125" data-file-height="216" /></a></span><div style="position: absolute; left: 206.11852219521px; top: 2px; padding: 0;"><span typeof="mw:File"><a href="/wiki/File:HSR_1996_II_3.5e.svg" class="mw-file-description" title="Genomic location for HCN4"><img alt="Genomic location for HCN4" src="//upload.wikimedia.org/wikipedia/commons/thumb/d/d8/HSR_1996_II_3.5e.svg/14px-HSR_1996_II_3.5e.svg.png" decoding="async" width="14" height="14" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/d/d8/HSR_1996_II_3.5e.svg/21px-HSR_1996_II_3.5e.svg.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/d/d8/HSR_1996_II_3.5e.svg/28px-HSR_1996_II_3.5e.svg.png 2x" data-file-width="142" data-file-height="142" /></a></span></div><div style="position: absolute; left: 212.1px; top: 19px; padding: 0;"><span typeof="mw:File"><a href="/wiki/File:Red_rectangle_2x18.png" class="mw-file-description" title="Genomic location for HCN4"><img alt="Genomic location for HCN4" src="//upload.wikimedia.org/wikipedia/commons/6/6a/Red_rectangle_2x18.png" decoding="async" width="2" height="18" class="mw-file-element" data-file-width="2" data-file-height="18" /></a></span></div></div></div></td></tr><tr><th scope="row" rowspan="2" width="15%" style="background-color:light-dark(#c3fdb8, #003500) !important;color:inherit"><a href="/wiki/Locus_(genetics)" title="Locus (genetics)">Band</a></th><td rowspan="2" width="35%" style="background-color:light-dark(#eee, #27292d) !important;color:inherit"><span class="plainlinks">15q24.1</span></td><th scope="row" style="background-color:light-dark(#c3fdb8, #003500) !important;color:inherit">Start</th><td style="background-color:light-dark(#eee, #27292d) !important;color:inherit"><span class="plainlinks">73,319,859 <a href="/wiki/Base_pair" title="Base pair">bp</a><sup id="cite_ref-refGRCh38Ensembl_1-1" class="reference"><a href="#cite_note-refGRCh38Ensembl-1"><span class="cite-bracket">[</span>1<span class="cite-bracket">]</span></a></sup></span></td></tr><tr><th scope="row" style="background-color:light-dark(#c3fdb8, #003500) !important;color:inherit">End</th><td style="background-color:light-dark(#eee, #27292d) !important;color:inherit"><span class="plainlinks">73,368,958 <a href="/wiki/Base_pair" title="Base pair">bp</a><sup id="cite_ref-refGRCh38Ensembl_1-2" class="reference"><a href="#cite_note-refGRCh38Ensembl-1"><span class="cite-bracket">[</span>1<span class="cite-bracket">]</span></a></sup></span></td></tr></tbody></table></td></tr><tr><td colspan="4" style="text-align:center;background-color:light-dark(#eee, #27292d) !important;color:inherit"><table class="collapsible collapsed" style="padding:0;border:none;margin:0;width:100%;text-align:left"><tbody><tr><th colspan="4" style="text-align:center;background-color:light-dark(#ddd, #404244) !important;color:inherit">Gene location (<a href="/wiki/Laboratory_mouse" title="Laboratory mouse">Mouse</a>)</th></tr><tr><td colspan="4" style="text-align:center;background-color:light-dark(#eee, #27292d) !important;color:inherit"><span typeof="mw:File"><a href="/wiki/File:Ideogram_house_mouse_chromosome_9.svg" class="mw-file-description" title="Chromosome 9 (mouse)"><img alt="Chromosome 9 (mouse)" src="//upload.wikimedia.org/wikipedia/commons/thumb/4/41/Ideogram_house_mouse_chromosome_9.svg/260px-Ideogram_house_mouse_chromosome_9.svg.png" decoding="async" width="260" height="111" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/4/41/Ideogram_house_mouse_chromosome_9.svg/390px-Ideogram_house_mouse_chromosome_9.svg.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/4/41/Ideogram_house_mouse_chromosome_9.svg/520px-Ideogram_house_mouse_chromosome_9.svg.png 2x" data-file-width="470" data-file-height="200" /></a></span></td></tr><tr><th scope="row" width="15%" style="background-color:light-dark(#c3fdb8, #003500) !important;color:inherit"><a href="/wiki/Chromosome" title="Chromosome">Chr.</a></th><td colspan="3" width="85%" style="background-color:light-dark(#eee, #27292d) !important;color:inherit"><span class="plainlinks">Chromosome 9 (mouse)<sup id="cite_ref-refGRCm38Ensembl_2-0" class="reference"><a href="#cite_note-refGRCm38Ensembl-2"><span class="cite-bracket">[</span>2<span class="cite-bracket">]</span></a></sup></span></td></tr><tr><td colspan="4" style="text-align:center;background-color:light-dark(#eee, #27292d) !important;color:inherit"><div align="center"><div style="position: relative; width: 300px;"><span typeof="mw:File"><a href="/wiki/File:Ideogram_of_house_mouse_chromosome_9.svg" class="mw-file-description" title="Chromosome 9 (mouse)"><img alt="Chromosome 9 (mouse)" src="//upload.wikimedia.org/wikipedia/commons/thumb/f/f2/Ideogram_of_house_mouse_chromosome_9.svg/300px-Ideogram_of_house_mouse_chromosome_9.svg.png" decoding="async" width="300" height="58" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/f/f2/Ideogram_of_house_mouse_chromosome_9.svg/450px-Ideogram_of_house_mouse_chromosome_9.svg.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/f/f2/Ideogram_of_house_mouse_chromosome_9.svg/600px-Ideogram_of_house_mouse_chromosome_9.svg.png 2x" data-file-width="1200" data-file-height="231" /></a></span><div style="position: absolute; left: 133.2932044748px; top: 2px; padding: 0;"><span typeof="mw:File"><a href="/wiki/File:HSR_1996_II_3.5e.svg" class="mw-file-description" title="Genomic location for HCN4"><img alt="Genomic location for HCN4" src="//upload.wikimedia.org/wikipedia/commons/thumb/d/d8/HSR_1996_II_3.5e.svg/14px-HSR_1996_II_3.5e.svg.png" decoding="async" width="14" height="14" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/d/d8/HSR_1996_II_3.5e.svg/21px-HSR_1996_II_3.5e.svg.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/d/d8/HSR_1996_II_3.5e.svg/28px-HSR_1996_II_3.5e.svg.png 2x" data-file-width="142" data-file-height="142" /></a></span></div><div style="position: absolute; left: 139.3px; top: 19px; padding: 0;"><span typeof="mw:File"><a href="/wiki/File:Red_rectangle_2x18.png" class="mw-file-description" title="Genomic location for HCN4"><img alt="Genomic location for HCN4" src="//upload.wikimedia.org/wikipedia/commons/6/6a/Red_rectangle_2x18.png" decoding="async" width="2" height="18" class="mw-file-element" data-file-width="2" data-file-height="18" /></a></span></div></div></div></td></tr><tr><th scope="row" rowspan="2" width="15%" style="background-color:light-dark(#c3fdb8, #003500) !important;color:inherit"><a href="/wiki/Locus_(genetics)" title="Locus (genetics)">Band</a></th><td rowspan="2" width="35%" style="background-color:light-dark(#eee, #27292d) !important;color:inherit"><span class="plainlinks">9|9 B</span></td><th scope="row" style="background-color:light-dark(#c3fdb8, #003500) !important;color:inherit">Start</th><td style="background-color:light-dark(#eee, #27292d) !important;color:inherit"><span class="plainlinks">58,730,695 <a href="/wiki/Base_pair" title="Base pair">bp</a><sup id="cite_ref-refGRCm38Ensembl_2-1" class="reference"><a href="#cite_note-refGRCm38Ensembl-2"><span class="cite-bracket">[</span>2<span class="cite-bracket">]</span></a></sup></span></td></tr><tr><th scope="row" style="background-color:light-dark(#c3fdb8, #003500) !important;color:inherit">End</th><td style="background-color:light-dark(#eee, #27292d) !important;color:inherit"><span class="plainlinks">58,770,458 <a href="/wiki/Base_pair" title="Base pair">bp</a><sup id="cite_ref-refGRCm38Ensembl_2-2" class="reference"><a href="#cite_note-refGRCm38Ensembl-2"><span class="cite-bracket">[</span>2<span class="cite-bracket">]</span></a></sup></span></td></tr></tbody></table></td></tr><tr><td colspan="4" style="text-align:center;background-color:light-dark(#eee, #27292d) !important;color:inherit"><table class="collapsible collapsed" style="padding:0;border:none;margin:0;width:100%;text-align:left"><tbody><tr><th colspan="4" style="text-align:center;background-color:light-dark(#ddd, #404244) !important;color:inherit"><a href="/wiki/Gene_expression" title="Gene expression">RNA expression</a> pattern</th></tr><tr><th scope="row" style="background-color:light-dark(#c3fdb8, #003500) !important;color:inherit"><a rel="nofollow" class="external text" href="https://www.bgee.org/">Bgee</a></th><td><table class="none" style="padding:0;border:none;margin:0;width:100%;text-align:left"><tbody><tr><th><b><a href="/wiki/Human_genome" title="Human genome">Human</a></b></th><th><b><a href="/wiki/Laboratory_mouse" title="Laboratory mouse">Mouse</a> (ortholog)</b></th></tr><tr><td><table class="none" style="padding:0;border:none;margin:0;width:100%;text-align:center"><tbody><tr><td colspan="1"><span class="plainlinks" style="margin:-3px"><a rel="nofollow" class="external text" href="https://www.bgee.org/gene/ENSG00000138622">Top expressed in</a></span></td></tr><tr><td colspan="1"><div class="plainlinks" style="margin:-12px 0px -10px 0px"><ul style="line-height:15%;margin:9px"><li style="line-height: 137%;">tibialis anterior muscle</li><br /><li style="line-height: 137%;">right atrium</li><br /><li style="line-height: 137%;">right auricle</li><br /><li style="line-height: 137%;">apex of heart</li><br /><li style="line-height: 137%;">testicle</li><br /><li style="line-height: 137%;">left ventricle</li><br /><li style="line-height: 137%;">secondary oocyte</li><br /><li style="line-height: 137%;">right ventricle</li><br /><li style="line-height: 137%;">gonad</li><br /><li style="line-height: 137%;">mucosa of ileum</li></ul></div></td></tr></tbody></table></td><td><table class="none" style="padding:0;border:none;margin:0;width:100%;text-align:center"><tbody><tr><td colspan="1"><span class="plainlinks" style="margin:-3px"><a rel="nofollow" class="external text" href="https://www.bgee.org/gene/ENSMUSG00000032338">Top expressed in</a></span></td></tr><tr><td colspan="1"><div class="plainlinks" style="margin:-12px 0px -10px 0px"><ul style="line-height:15%;margin:9px"><li style="line-height: 137%;">myocardium</li><br /><li style="line-height: 137%;">cardiac muscles</li><br /><li style="line-height: 137%;">Cardiac muscle tissue of myocardium</li><br /><li style="line-height: 137%;">electrical conduction system of the heart</li><br /><li style="line-height: 137%;">sinus venosus</li><br /><li style="line-height: 137%;">right atrium</li><br /><li style="line-height: 137%;">sinoatrial node</li><br /><li style="line-height: 137%;">septum transversum</li><br /><li style="line-height: 137%;">vein</li><br /><li style="line-height: 137%;">left horn of sinus venosus</li></ul></div></td></tr></tbody></table></td></tr><tr><td colspan="4" style="text-align:center;background-color:light-dark(#eee, #27292d) !important;color:inherit"><span class="plainlinks"><a rel="nofollow" class="external text" href="https://www.bgee.org/gene/ENSG00000138622">More reference expression data</a></span></td></tr></tbody></table></td></tr><tr><th scope="row" style="background-color:light-dark(#c3fdb8, #003500) !important;color:inherit"><a rel="nofollow" class="external text" href="http://biogps.org/">BioGPS</a></th><td><table class="none" style="padding:0;border:none;margin:0;width:100%;text-align:left"><tbody><tr><td colspan="4" style="text-align:center;background-color:light-dark(#eee, #27292d) !important;color:inherit"><span typeof="mw:File"><a href="/wiki/File:PBB_GE_HCN4_206946_at_fs.png" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/3/3b/PBB_GE_HCN4_206946_at_fs.png/250px-PBB_GE_HCN4_206946_at_fs.png" decoding="async" width="250" height="181" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/3/3b/PBB_GE_HCN4_206946_at_fs.png/375px-PBB_GE_HCN4_206946_at_fs.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/3/3b/PBB_GE_HCN4_206946_at_fs.png/500px-PBB_GE_HCN4_206946_at_fs.png 2x" data-file-width="732" data-file-height="530" /></a></span></td></tr><tr><td colspan="4" style="text-align:center;background-color:light-dark(#eee, #27292d) !important;color:inherit"><span class="plainlinks"><a rel="nofollow" class="external text" href="http://biogps.org/gene/10021/">More reference expression data</a></span></td></tr></tbody></table></td></tr></tbody></table></td></tr><tr><td colspan="4" style="text-align:center;background-color:light-dark(#eee, #27292d) !important;color:inherit"><table class="collapsible collapsed" style="padding:0;border:none;margin:0;width:100%;text-align:left"><tbody><tr><th colspan="4" style="text-align:center;background-color:light-dark(#ddd, #404244) !important;color:inherit"><a href="/wiki/Gene_ontology" class="mw-redirect" title="Gene ontology">Gene ontology</a></th></tr><tr><td style="background-color:light-dark(#c3fdb8, #003500) !important;color:inherit;font-weight:bold">Molecular function</td><td style="background-color:light-dark(#eee, #27292d) !important;color:inherit"><div class="plainlinks"> <ul><li><a rel="nofollow" class="external text" href="http://amigo.geneontology.org/amigo/term/GO:0000166">nucleotide binding</a></li> <li><a rel="nofollow" class="external text" href="http://amigo.geneontology.org/amigo/term/GO:0005267">potassium channel activity</a></li> <li><a rel="nofollow" class="external text" href="http://amigo.geneontology.org/amigo/term/GO:0030552">cAMP binding</a></li> <li><a rel="nofollow" class="external text" href="http://amigo.geneontology.org/amigo/term/GO:0005272">sodium channel activity</a></li> <li><a rel="nofollow" class="external text" href="http://amigo.geneontology.org/amigo/term/GO:0005244">voltage-gated ion channel activity</a></li> <li><a rel="nofollow" class="external text" href="http://amigo.geneontology.org/amigo/term/GO:0005216">ion channel activity</a></li> <li><a rel="nofollow" class="external text" href="http://amigo.geneontology.org/amigo/term/GO:0005222">intracellular cAMP-activated cation channel activity</a></li> <li><a rel="nofollow" class="external text" href="http://amigo.geneontology.org/amigo/term/GO:0042802">identical protein binding</a></li> <li><a rel="nofollow" class="external text" href="http://amigo.geneontology.org/amigo/term/GO:0005249">voltage-gated potassium channel activity</a></li> <li><a rel="nofollow" class="external text" href="http://amigo.geneontology.org/amigo/term/GO:0005248">voltage-gated sodium channel activity</a></li> <li><a rel="nofollow" class="external text" href="http://amigo.geneontology.org/amigo/term/GO:0086041">voltage-gated potassium channel activity involved in SA node cell action potential depolarization</a></li></ul> </div></td></tr><tr><td style="background-color:light-dark(#c3fdb8, #003500) !important;color:inherit;font-weight:bold">Cellular component</td><td style="background-color:light-dark(#eee, #27292d) !important;color:inherit"><div class="plainlinks"> <ul><li><a rel="nofollow" class="external text" href="http://amigo.geneontology.org/amigo/term/GO:0016021">integral component of membrane</a></li> <li><a rel="nofollow" class="external text" href="http://amigo.geneontology.org/amigo/term/GO:0016020">membrane</a></li> <li><a rel="nofollow" class="external text" href="http://amigo.geneontology.org/amigo/term/GO:0031226">intrinsic component of plasma membrane</a></li> <li><a rel="nofollow" class="external text" href="http://amigo.geneontology.org/amigo/term/GO:0005886">plasma membrane</a></li> <li><a rel="nofollow" class="external text" href="http://amigo.geneontology.org/amigo/term/GO:0048471">perinuclear region of cytoplasm</a></li> <li><a rel="nofollow" class="external text" href="http://amigo.geneontology.org/amigo/term/GO:0098855">HCN channel complex</a></li></ul> </div></td></tr><tr><td style="background-color:light-dark(#c3fdb8, #003500) !important;color:inherit;font-weight:bold">Biological process</td><td style="background-color:light-dark(#eee, #27292d) !important;color:inherit"><div class="plainlinks"> <ul><li><a rel="nofollow" class="external text" href="http://amigo.geneontology.org/amigo/term/GO:0071321">cellular response to cGMP</a></li> <li><a rel="nofollow" class="external text" href="http://amigo.geneontology.org/amigo/term/GO:0006936">muscle contraction</a></li> <li><a rel="nofollow" class="external text" href="http://amigo.geneontology.org/amigo/term/GO:0035725">sodium ion transmembrane transport</a></li> <li><a rel="nofollow" class="external text" href="http://amigo.geneontology.org/amigo/term/GO:0006814">sodium ion transport</a></li> <li><a rel="nofollow" class="external text" href="http://amigo.geneontology.org/amigo/term/GO:0086015">SA node cell action potential</a></li> <li><a rel="nofollow" class="external text" href="http://amigo.geneontology.org/amigo/term/GO:0042391">regulation of membrane potential</a></li> <li><a rel="nofollow" class="external text" href="http://amigo.geneontology.org/amigo/term/GO:0034765">regulation of ion transmembrane transport</a></li> <li><a rel="nofollow" class="external text" href="http://amigo.geneontology.org/amigo/term/GO:0006812">cation transport</a></li> <li><a rel="nofollow" class="external text" href="http://amigo.geneontology.org/amigo/term/GO:0006811">ion transport</a></li> <li><a rel="nofollow" class="external text" href="http://amigo.geneontology.org/amigo/term/GO:0008015">blood circulation</a></li> <li><a rel="nofollow" class="external text" href="http://amigo.geneontology.org/amigo/term/GO:0003254">regulation of membrane depolarization</a></li> <li><a rel="nofollow" class="external text" href="http://amigo.geneontology.org/amigo/term/GO:0002027">regulation of heart rate</a></li> <li><a rel="nofollow" class="external text" href="http://amigo.geneontology.org/amigo/term/GO:0006813">potassium ion transport</a></li> <li><a rel="nofollow" class="external text" href="http://amigo.geneontology.org/amigo/term/GO:0055085">transmembrane transport</a></li> <li><a rel="nofollow" class="external text" href="http://amigo.geneontology.org/amigo/term/GO:0071805">potassium ion transmembrane transport</a></li> <li><a rel="nofollow" class="external text" href="http://amigo.geneontology.org/amigo/term/GO:0055117">regulation of cardiac muscle contraction</a></li> <li><a rel="nofollow" class="external text" href="http://amigo.geneontology.org/amigo/term/GO:0086091">regulation of heart rate by cardiac conduction</a></li> <li><a rel="nofollow" class="external text" href="http://amigo.geneontology.org/amigo/term/GO:0071320">cellular response to cAMP</a></li> <li><a rel="nofollow" class="external text" href="http://amigo.geneontology.org/amigo/term/GO:0086012">membrane depolarization during cardiac muscle cell action potential</a></li> <li><a rel="nofollow" class="external text" href="http://amigo.geneontology.org/amigo/term/GO:0086046">membrane depolarization during SA node cell action potential</a></li> <li><a rel="nofollow" class="external text" href="http://amigo.geneontology.org/amigo/term/GO:0098719">sodium ion import across plasma membrane</a></li> <li><a rel="nofollow" class="external text" href="http://amigo.geneontology.org/amigo/term/GO:0098909">regulation of cardiac muscle cell action potential involved in regulation of contraction</a></li> <li><a rel="nofollow" class="external text" href="http://amigo.geneontology.org/amigo/term/GO:1990573">potassium ion import across plasma membrane</a></li></ul> </div></td></tr><tr><td colspan="4" style="background-color:light-dark(#eee, #27292d) !important;color:inherit;text-align:center">Sources:<a rel="nofollow" class="external text" href="http://amigo.geneontology.org/">Amigo</a> / <a rel="nofollow" class="external text" href="https://www.ebi.ac.uk/QuickGO/">QuickGO</a></td></tr></tbody></table></td></tr><tr><td colspan="4" style="text-align:center;background-color:light-dark(#eee, #27292d) !important;color:inherit"><table class="collapsible" style="padding:0;border:none;margin:0;width:100%;text-align:left"><tbody><tr><th colspan="4" style="text-align:center;background-color:light-dark(#ddd, #404244) !important;color:inherit"><a href="/wiki/Orthologs" class="mw-redirect" title="Orthologs">Orthologs</a></th></tr><tr><th scope="row" style="background-color:light-dark(#c3fdb8, #003500) !important;color:inherit">Species</th><td><b>Human</b></td><td><b>Mouse</b></td></tr><tr><th scope="row" style="background-color:light-dark(#c3fdb8, #003500) !important;color:inherit"><a href="/wiki/Entrez" title="Entrez">Entrez</a></th><td><table class="none" style="padding:0;border:none;margin:0;width:100%;text-align:right"><tbody><tr><th colspan="1"><span class="plainlinks"></span></th></tr><tr><td colspan="1"><p class="plainlinks"><a rel="nofollow" class="external text" href="https://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=gene&cmd=retrieve&dopt=default&list_uids=10021&rn=1">10021</a></p></td></tr></tbody></table></td><td><table class="none" style="padding:0;border:none;margin:0;width:100%;text-align:right"><tbody><tr><th colspan="1"><span class="plainlinks"></span></th></tr><tr><td colspan="1"><p class="plainlinks"><a rel="nofollow" class="external text" href="https://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=gene&cmd=retrieve&dopt=default&list_uids=330953&rn=1">330953</a></p></td></tr></tbody></table></td></tr><tr><th scope="row" style="background-color:light-dark(#c3fdb8, #003500) !important;color:inherit"><a href="/wiki/Ensembl" class="mw-redirect" title="Ensembl">Ensembl</a></th><td><table class="none" style="padding:0;border:none;margin:0;width:100%;text-align:right"><tbody><tr><th colspan="1"><span class="plainlinks"></span></th></tr><tr><td colspan="1"><p class="plainlinks"><a rel="nofollow" class="external text" href="http://www.ensembl.org/Homo_sapiens/geneview?gene=ENSG00000138622;db=core">ENSG00000138622</a></p></td></tr></tbody></table></td><td><table class="none" style="padding:0;border:none;margin:0;width:100%;text-align:right"><tbody><tr><th colspan="1"><span class="plainlinks"></span></th></tr><tr><td colspan="1"><p class="plainlinks"><a rel="nofollow" class="external text" href="http://www.ensembl.org/Mus_musculus/geneview?gene=ENSMUSG00000032338;db=core">ENSMUSG00000032338</a></p></td></tr></tbody></table></td></tr><tr><th scope="row" style="background-color:light-dark(#c3fdb8, #003500) !important;color:inherit"><a href="/wiki/UniProt" title="UniProt">UniProt</a></th><td><table class="none" style="padding:0;border:none;margin:0;width:100%;text-align:right"><tbody><tr><th colspan="1"><span class="plainlinks"></span></th></tr><tr><td colspan="1"><p class="plainlinks"><a rel="nofollow" class="external text" href="https://www.uniprot.org/uniprot/Q9Y3Q4">Q9Y3Q4</a></p></td></tr></tbody></table></td><td><table class="none" style="padding:0;border:none;margin:0;width:100%;text-align:right"><tbody><tr><th colspan="1"><span class="plainlinks"></span></th></tr><tr><td colspan="1"><p class="plainlinks"><a rel="nofollow" class="external text" href="https://www.uniprot.org/uniprot/O70507">O70507</a></p></td></tr></tbody></table></td></tr><tr><th scope="row" style="background-color:light-dark(#c3fdb8, #003500) !important;color:inherit">RefSeq (mRNA)</th><td><table class="none" style="padding:0;border:none;margin:0;width:100%;text-align:right"><tbody><tr><th colspan="1" class="plainlinks"></th></tr><tr><td colspan="1"><p><span class="plainlinks"><a rel="nofollow" class="external text" href="https://www.ncbi.nlm.nih.gov/entrez/viewer.fcgi?val=NM_005477">NM_005477</a></span></p></td></tr></tbody></table></td><td><table class="none" style="padding:0;border:none;margin:0;width:100%;text-align:right"><tbody><tr><th colspan="1" class="plainlinks"></th></tr><tr><td colspan="1"><p><span class="plainlinks"><a rel="nofollow" class="external text" href="https://www.ncbi.nlm.nih.gov/entrez/viewer.fcgi?val=NM_001081192">NM_001081192</a></span></p></td></tr></tbody></table></td></tr><tr><th scope="row" style="background-color:light-dark(#c3fdb8, #003500) !important;color:inherit">RefSeq (protein)</th><td><table class="none" style="padding:0;border:none;margin:0;width:100%;text-align:right"><tbody><tr><th colspan="1" class="plainlinks"></th></tr><tr><td colspan="1"><p><span class="plainlinks"><a rel="nofollow" class="external text" href="https://www.ncbi.nlm.nih.gov/entrez/viewer.fcgi?val=NP_005468">NP_005468</a></span></p></td></tr></tbody></table></td><td><table class="none" style="padding:0;border:none;margin:0;width:100%;text-align:right"><tbody><tr><th colspan="1" class="plainlinks"></th></tr><tr><td colspan="1"><p><span class="plainlinks"><a rel="nofollow" class="external text" href="https://www.ncbi.nlm.nih.gov/entrez/viewer.fcgi?val=NP_001074661">NP_001074661</a></span></p></td></tr></tbody></table></td></tr><tr><th scope="row" style="background-color:light-dark(#c3fdb8, #003500) !important;color:inherit">Location (UCSC)</th><td><span class="plainlinks"><a rel="nofollow" class="external text" href="https://genome.ucsc.edu/cgi-bin/hgTracks?org=Human&db=hg38&position=chr15:73319859-73368958">Chr 15: 73.32 – 73.37 Mb</a></span></td><td><span class="plainlinks"><a rel="nofollow" class="external text" href="https://genome.ucsc.edu/cgi-bin/hgTracks?org=Mouse&db=mm0&position=chr9:58730695-58770458">Chr 9: 58.73 – 58.77 Mb</a></span></td></tr><tr><th scope="row" style="background-color:light-dark(#c3fdb8, #003500) !important;color:inherit"><a href="/wiki/PubMed" title="PubMed">PubMed</a> search</th><td><span class="plainlinks"><sup id="cite_ref-3" class="reference"><a href="#cite_note-3"><span class="cite-bracket">[</span>3<span class="cite-bracket">]</span></a></sup></span></td><td><span class="plainlinks"><sup id="cite_ref-4" class="reference"><a href="#cite_note-4"><span class="cite-bracket">[</span>4<span class="cite-bracket">]</span></a></sup></span></td></tr></tbody></table></td></tr><tr><td colspan="4" style="text-align:center;background-color:light-dark(#eee, #27292d) !important;color:inherit"><a href="/wiki/Wikidata" title="Wikidata">Wikidata</a></td></tr><tr><td colspan="4" style="text-align:center;background-color:light-dark(#eee, #27292d) !important;color:inherit"><table style="padding:0;border:none;margin:0;width:100%;text-align:center"><tbody><tr><td colspan="2" style="background-color:light-dark(#eee, #27292d) !important;color:inherit;text-align:center"><a href="https://www.wikidata.org/wiki/Q18034961" class="extiw" title="d:Q18034961">View/Edit Human</a></td><td colspan="2" style="background-color:light-dark(#eee, #27292d) !important;color:inherit;text-align:center"><a href="https://www.wikidata.org/wiki/Q18302777" class="extiw" title="d:Q18302777">View/Edit Mouse</a></td></tr></tbody></table></td></tr></tbody></table> <p><b>Potassium/sodium hyperpolarization-activated cyclic nucleotide-gated channel 4</b> is a <a href="/wiki/Protein" title="Protein">protein</a> that in humans is encoded by the <i>HCN4</i> <a href="/wiki/Gene" title="Gene">gene</a>.<sup id="cite_ref-pmid10228147_5-0" class="reference"><a href="#cite_note-pmid10228147-5"><span class="cite-bracket">[</span>5<span class="cite-bracket">]</span></a></sup><sup id="cite_ref-pmid10430953_6-0" class="reference"><a href="#cite_note-pmid10430953-6"><span class="cite-bracket">[</span>6<span class="cite-bracket">]</span></a></sup><sup id="cite_ref-pmid16382102_7-0" class="reference"><a href="#cite_note-pmid16382102-7"><span class="cite-bracket">[</span>7<span class="cite-bracket">]</span></a></sup><sup id="cite_ref-entrez_8-0" class="reference"><a href="#cite_note-entrez-8"><span class="cite-bracket">[</span>8<span class="cite-bracket">]</span></a></sup> </p><p>There are four <a href="/wiki/HCN_channel" title="HCN channel">HCN channels</a>. HCN4 is prominently expressed in the <a href="/wiki/Pace_maker" class="mw-redirect" title="Pace maker">pace maker</a> region of the mammalian <a href="/wiki/Heart" title="Heart">heart</a>.<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> Some humans with <a href="/wiki/Bradycardia" title="Bradycardia">bradycardia</a> and <a href="/wiki/Sick_sinus_syndrome" class="mw-redirect" title="Sick sinus syndrome">Sick sinus syndrome</a> have been shown to have mutations in their HCN4 gene.<sup id="cite_ref-Jou,_et_al_10-0" class="reference"><a href="#cite_note-Jou,_et_al-10"><span class="cite-bracket">[</span>10<span class="cite-bracket">]</span></a></sup><sup id="cite_ref-11" class="reference"><a href="#cite_note-11"><span class="cite-bracket">[</span>11<span class="cite-bracket">]</span></a></sup><sup id="cite_ref-12" class="reference"><a href="#cite_note-12"><span class="cite-bracket">[</span>12<span class="cite-bracket">]</span></a></sup> The role of HCN channels in <a href="/wiki/Autonomic_nervous_system" title="Autonomic nervous system">autonomic</a> control of heart rate is currently a matter of ongoing investigation.<sup id="cite_ref-13" class="reference"><a href="#cite_note-13"><span class="cite-bracket">[</span>13<span class="cite-bracket">]</span></a></sup><sup id="cite_ref-14" class="reference"><a href="#cite_note-14"><span class="cite-bracket">[</span>14<span class="cite-bracket">]</span></a></sup><sup id="cite_ref-15" class="reference"><a href="#cite_note-15"><span class="cite-bracket">[</span>15<span class="cite-bracket">]</span></a></sup><sup id="cite_ref-16" class="reference"><a href="#cite_note-16"><span class="cite-bracket">[</span>16<span class="cite-bracket">]</span></a></sup> </p> <meta property="mw:PageProp/toc" /> <div class="mw-heading mw-heading2"><h2 id="Interactions">Interactions</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=HCN4&action=edit&section=1" title="Edit section: Interactions"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>HCN4 has been shown to <a href="/wiki/Protein-protein_interaction" class="mw-redirect" title="Protein-protein interaction">interact</a> with <a href="/wiki/HCN2" title="HCN2">HCN2</a>.<sup id="cite_ref-pmid12928435_17-0" class="reference"><a href="#cite_note-pmid12928435-17"><span class="cite-bracket">[</span>17<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=HCN4&action=edit&section=2" title="Edit section: See also"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <ul><li><a href="/wiki/Cyclic_nucleotide-gated_ion_channel" class="mw-redirect" title="Cyclic nucleotide-gated ion channel">Cyclic nucleotide-gated ion channel</a></li> <li><a href="/wiki/Funny_current" class="mw-redirect" title="Funny current">Funny current</a></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=HCN4&action=edit&section=3" 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"> <div class="mw-references-wrap mw-references-columns"><ol class="references"> <li id="cite_note-refGRCh38Ensembl-1"><span class="mw-cite-backlink">^ <a href="#cite_ref-refGRCh38Ensembl_1-0"><sup><i><b>a</b></i></sup></a> <a href="#cite_ref-refGRCh38Ensembl_1-1"><sup><i><b>b</b></i></sup></a> <a href="#cite_ref-refGRCh38Ensembl_1-2"><sup><i><b>c</b></i></sup></a></span> <span class="reference-text"><a rel="nofollow" class="external text" href="http://May2017.archive.ensembl.org/Homo_sapiens/Gene/Summary?db=core;g=ENSG00000138622">GRCh38: Ensembl release 89: ENSG00000138622</a> – <a href="/wiki/Ensembl_genome_database_project" title="Ensembl genome database project">Ensembl</a>, May 2017</span> </li> <li id="cite_note-refGRCm38Ensembl-2"><span class="mw-cite-backlink">^ <a href="#cite_ref-refGRCm38Ensembl_2-0"><sup><i><b>a</b></i></sup></a> <a href="#cite_ref-refGRCm38Ensembl_2-1"><sup><i><b>b</b></i></sup></a> <a href="#cite_ref-refGRCm38Ensembl_2-2"><sup><i><b>c</b></i></sup></a></span> <span class="reference-text"><a rel="nofollow" class="external text" href="http://May2017.archive.ensembl.org/Mus_musculus/Gene/Summary?db=core;g=ENSMUSG00000032338">GRCm38: Ensembl release 89: ENSMUSG00000032338</a> – <a href="/wiki/Ensembl_genome_database_project" title="Ensembl genome database project">Ensembl</a>, May 2017</span> </li> <li id="cite_note-3"><span class="mw-cite-backlink"><b><a href="#cite_ref-3">^</a></b></span> <span class="reference-text"><style data-mw-deduplicate="TemplateStyles:r1238218222">.mw-parser-output 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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 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title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=article&rft.jtitle=The+Journal+of+General+Physiology&rft.atitle=Phosphorylation+and+modulation+of+hyperpolarization-activated+HCN4+channels+by+protein+kinase+A+in+the+mouse+sinoatrial+node&rft.volume=136&rft.issue=3&rft.pages=%3Cspan+class%3D%22nowrap%22%3E247-%3C%2Fspan%3E58&rft.date=2010-09&rft_id=https%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fpmc%2Farticles%2FPMC2931151%23id-name%3DPMC&rft_id=info%3Apmid%2F20713547&rft_id=info%3Adoi%2F10.1085%2Fjgp.201010488&rft.aulast=Liao&rft.aufirst=Z&rft.au=Lockhead%2C+D&rft.au=Larson%2C+ED&rft.au=Proenza%2C+C&rft_id=https%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fpmc%2Farticles%2FPMC2931151&rfr_id=info%3Asid%2Fen.wikipedia.org%3AHCN4" class="Z3988"></span></span> </li> <li id="cite_note-16"><span class="mw-cite-backlink"><b><a href="#cite_ref-16">^</a></b></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222" /><cite id="CITEREFNofAntzelevitchGlikson2010" class="citation journal cs1">Nof E, Antzelevitch C, Glikson M (Jan 2010). <a rel="nofollow" class="external text" href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2865562">"The Contribution of HCN4 to normal sinus node function in humans and animal models"</a>. <i>Pacing and Clinical Electrophysiology</i>. <b>33</b> (1): <span class="nowrap">100–</span>6. <a href="/wiki/Doi_(identifier)" class="mw-redirect" title="Doi (identifier)">doi</a>:<a rel="nofollow" class="external text" href="https://doi.org/10.1111%2Fj.1540-8159.2009.02563.x">10.1111/j.1540-8159.2009.02563.x</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/PMC2865562">2865562</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/19796353">19796353</a>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=article&rft.jtitle=Pacing+and+Clinical+Electrophysiology&rft.atitle=The+Contribution+of+HCN4+to+normal+sinus+node+function+in+humans+and+animal+models&rft.volume=33&rft.issue=1&rft.pages=%3Cspan+class%3D%22nowrap%22%3E100-%3C%2Fspan%3E6&rft.date=2010-01&rft_id=https%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fpmc%2Farticles%2FPMC2865562%23id-name%3DPMC&rft_id=info%3Apmid%2F19796353&rft_id=info%3Adoi%2F10.1111%2Fj.1540-8159.2009.02563.x&rft.aulast=Nof&rft.aufirst=E&rft.au=Antzelevitch%2C+C&rft.au=Glikson%2C+M&rft_id=https%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fpmc%2Farticles%2FPMC2865562&rfr_id=info%3Asid%2Fen.wikipedia.org%3AHCN4" class="Z3988"></span></span> </li> <li id="cite_note-pmid12928435-17"><span class="mw-cite-backlink"><b><a href="#cite_ref-pmid12928435_17-0">^</a></b></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222" /><cite id="CITEREFMuchWahl-SchottZongSchneider2003" class="citation journal cs1">Much B, Wahl-Schott C, Zong X, Schneider A, Baumann L, Moosmang S, Ludwig A, Biel M (Oct 2003). <a rel="nofollow" class="external text" href="https://doi.org/10.1074%2Fjbc.M306958200">"Role of subunit heteromerization and N-linked glycosylation in the formation of functional hyperpolarization-activated cyclic nucleotide-gated channels"</a>. <i>The Journal of Biological Chemistry</i>. <b>278</b> (44): <span class="nowrap">43781–</span>6. <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/10.1074%2Fjbc.M306958200">10.1074/jbc.M306958200</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/12928435">12928435</a>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=article&rft.jtitle=The+Journal+of+Biological+Chemistry&rft.atitle=Role+of+subunit+heteromerization+and+N-linked+glycosylation+in+the+formation+of+functional+hyperpolarization-activated+cyclic+nucleotide-gated+channels&rft.volume=278&rft.issue=44&rft.pages=%3Cspan+class%3D%22nowrap%22%3E43781-%3C%2Fspan%3E6&rft.date=2003-10&rft_id=info%3Adoi%2F10.1074%2Fjbc.M306958200&rft_id=info%3Apmid%2F12928435&rft.aulast=Much&rft.aufirst=B&rft.au=Wahl-Schott%2C+C&rft.au=Zong%2C+X&rft.au=Schneider%2C+A&rft.au=Baumann%2C+L&rft.au=Moosmang%2C+S&rft.au=Ludwig%2C+A&rft.au=Biel%2C+M&rft_id=https%3A%2F%2Fdoi.org%2F10.1074%252Fjbc.M306958200&rfr_id=info%3Asid%2Fen.wikipedia.org%3AHCN4" class="Z3988"></span></span> </li> </ol></div></div> <div class="mw-heading mw-heading2"><h2 id="Further_reading">Further reading</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=HCN4&action=edit&section=4" title="Edit section: Further reading"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <style data-mw-deduplicate="TemplateStyles:r1239549316">.mw-parser-output .refbegin{margin-bottom:0.5em}.mw-parser-output .refbegin-hanging-indents>ul{margin-left:0}.mw-parser-output .refbegin-hanging-indents>ul>li{margin-left:0;padding-left:3.2em;text-indent:-3.2em}.mw-parser-output .refbegin-hanging-indents ul,.mw-parser-output .refbegin-hanging-indents ul li{list-style:none}@media(max-width:720px){.mw-parser-output .refbegin-hanging-indents>ul>li{padding-left:1.6em;text-indent:-1.6em}}.mw-parser-output .refbegin-columns{margin-top:0.3em}.mw-parser-output .refbegin-columns ul{margin-top:0}.mw-parser-output .refbegin-columns li{page-break-inside:avoid;break-inside:avoid-column}@media screen{.mw-parser-output .refbegin{font-size:90%}}</style><div class="refbegin refbegin-columns references-column-width" style="column-width: 30em"> <ul><li><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222" /><cite id="CITEREFQuAltomareBucchiDiFrancesco2002" class="citation journal cs1">Qu J, Altomare C, Bucchi A, DiFrancesco D, Robinson RB (Aug 2002). "Functional comparison of HCN isoforms expressed in ventricular and HEK 293 cells". <i>Pflügers Archiv</i>. <b>444</b> (5): <span class="nowrap">597–</span>601. <a href="/wiki/Doi_(identifier)" class="mw-redirect" title="Doi (identifier)">doi</a>:<a rel="nofollow" class="external text" href="https://doi.org/10.1007%2Fs00424-002-0860-7">10.1007/s00424-002-0860-7</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/12194012">12194012</a>. <a href="/wiki/S2CID_(identifier)" class="mw-redirect" title="S2CID (identifier)">S2CID</a> <a rel="nofollow" class="external text" href="https://api.semanticscholar.org/CorpusID:508732">508732</a>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=article&rft.jtitle=Pfl%C3%BCgers+Archiv&rft.atitle=Functional+comparison+of+HCN+isoforms+expressed+in+ventricular+and+HEK+293+cells&rft.volume=444&rft.issue=5&rft.pages=%3Cspan+class%3D%22nowrap%22%3E597-%3C%2Fspan%3E601&rft.date=2002-08&rft_id=https%3A%2F%2Fapi.semanticscholar.org%2FCorpusID%3A508732%23id-name%3DS2CID&rft_id=info%3Apmid%2F12194012&rft_id=info%3Adoi%2F10.1007%2Fs00424-002-0860-7&rft.aulast=Qu&rft.aufirst=J&rft.au=Altomare%2C+C&rft.au=Bucchi%2C+A&rft.au=DiFrancesco%2C+D&rft.au=Robinson%2C+RB&rfr_id=info%3Asid%2Fen.wikipedia.org%3AHCN4" class="Z3988"></span></li> <li><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222" /><cite id="CITEREFSchulze-BahrNeuFriederichKaupp2003" class="citation journal cs1">Schulze-Bahr E, Neu A, Friederich P, Kaupp UB, Breithardt G, Pongs O, Isbrandt D (May 2003). <a rel="nofollow" class="external text" href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC155041">"Pacemaker channel dysfunction in a patient with sinus node disease"</a>. <i>The Journal of Clinical Investigation</i>. <b>111</b> (10): <span class="nowrap">1537–</span>45. <a href="/wiki/Doi_(identifier)" class="mw-redirect" title="Doi (identifier)">doi</a>:<a rel="nofollow" class="external text" href="https://doi.org/10.1172%2FJCI16387">10.1172/JCI16387</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/PMC155041">155041</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/12750403">12750403</a>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=article&rft.jtitle=The+Journal+of+Clinical+Investigation&rft.atitle=Pacemaker+channel+dysfunction+in+a+patient+with+sinus+node+disease&rft.volume=111&rft.issue=10&rft.pages=%3Cspan+class%3D%22nowrap%22%3E1537-%3C%2Fspan%3E45&rft.date=2003-05&rft_id=https%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fpmc%2Farticles%2FPMC155041%23id-name%3DPMC&rft_id=info%3Apmid%2F12750403&rft_id=info%3Adoi%2F10.1172%2FJCI16387&rft.aulast=Schulze-Bahr&rft.aufirst=E&rft.au=Neu%2C+A&rft.au=Friederich%2C+P&rft.au=Kaupp%2C+UB&rft.au=Breithardt%2C+G&rft.au=Pongs%2C+O&rft.au=Isbrandt%2C+D&rft_id=https%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fpmc%2Farticles%2FPMC155041&rfr_id=info%3Asid%2Fen.wikipedia.org%3AHCN4" class="Z3988"></span></li> <li><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222" /><cite id="CITEREFStieberThomerMuchSchneider2003" class="citation journal cs1">Stieber J, Thomer A, Much B, Schneider A, Biel M, Hofmann F (Sep 2003). <a rel="nofollow" class="external text" href="https://doi.org/10.1074%2Fjbc.M305318200">"Molecular basis for the different activation kinetics of the pacemaker channels HCN2 and HCN4"</a>. <i>The Journal of Biological Chemistry</i>. <b>278</b> (36): <span class="nowrap">33672–</span>80. <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/10.1074%2Fjbc.M305318200">10.1074/jbc.M305318200</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/12813043">12813043</a>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=article&rft.jtitle=The+Journal+of+Biological+Chemistry&rft.atitle=Molecular+basis+for+the+different+activation+kinetics+of+the+pacemaker+channels+HCN2+and+HCN4&rft.volume=278&rft.issue=36&rft.pages=%3Cspan+class%3D%22nowrap%22%3E33672-%3C%2Fspan%3E80&rft.date=2003-09&rft_id=info%3Adoi%2F10.1074%2Fjbc.M305318200&rft_id=info%3Apmid%2F12813043&rft.aulast=Stieber&rft.aufirst=J&rft.au=Thomer%2C+A&rft.au=Much%2C+B&rft.au=Schneider%2C+A&rft.au=Biel%2C+M&rft.au=Hofmann%2C+F&rft_id=https%3A%2F%2Fdoi.org%2F10.1074%252Fjbc.M305318200&rfr_id=info%3Asid%2Fen.wikipedia.org%3AHCN4" class="Z3988"></span></li> <li><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222" /><cite id="CITEREFDecherBundisVajnaSteinmeyer2003" class="citation journal cs1">Decher N, Bundis F, Vajna R, Steinmeyer K (Sep 2003). "KCNE2 modulates current amplitudes and activation kinetics of HCN4: influence of KCNE family members on HCN4 currents". <i>Pflügers Archiv</i>. <b>446</b> (6): <span class="nowrap">633–</span>40. <a href="/wiki/Doi_(identifier)" class="mw-redirect" title="Doi (identifier)">doi</a>:<a rel="nofollow" class="external text" href="https://doi.org/10.1007%2Fs00424-003-1127-7">10.1007/s00424-003-1127-7</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/12856183">12856183</a>. <a href="/wiki/S2CID_(identifier)" class="mw-redirect" title="S2CID (identifier)">S2CID</a> <a rel="nofollow" class="external text" href="https://api.semanticscholar.org/CorpusID:21513896">21513896</a>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=article&rft.jtitle=Pfl%C3%BCgers+Archiv&rft.atitle=KCNE2+modulates+current+amplitudes+and+activation+kinetics+of+HCN4%3A+influence+of+KCNE+family+members+on+HCN4+currents&rft.volume=446&rft.issue=6&rft.pages=%3Cspan+class%3D%22nowrap%22%3E633-%3C%2Fspan%3E40&rft.date=2003-09&rft_id=https%3A%2F%2Fapi.semanticscholar.org%2FCorpusID%3A21513896%23id-name%3DS2CID&rft_id=info%3Apmid%2F12856183&rft_id=info%3Adoi%2F10.1007%2Fs00424-003-1127-7&rft.aulast=Decher&rft.aufirst=N&rft.au=Bundis%2C+F&rft.au=Vajna%2C+R&rft.au=Steinmeyer%2C+K&rfr_id=info%3Asid%2Fen.wikipedia.org%3AHCN4" class="Z3988"></span></li> <li><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222" /><cite id="CITEREFMuchWahl-SchottZongSchneider2003" class="citation journal cs1">Much B, Wahl-Schott C, Zong X, Schneider A, Baumann L, Moosmang S, Ludwig A, Biel M (Oct 2003). <a rel="nofollow" class="external text" href="https://doi.org/10.1074%2Fjbc.M306958200">"Role of subunit heteromerization and N-linked glycosylation in the formation of functional hyperpolarization-activated cyclic nucleotide-gated channels"</a>. <i>The Journal of Biological Chemistry</i>. <b>278</b> (44): <span class="nowrap">43781–</span>6. <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/10.1074%2Fjbc.M306958200">10.1074/jbc.M306958200</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/12928435">12928435</a>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=article&rft.jtitle=The+Journal+of+Biological+Chemistry&rft.atitle=Role+of+subunit+heteromerization+and+N-linked+glycosylation+in+the+formation+of+functional+hyperpolarization-activated+cyclic+nucleotide-gated+channels&rft.volume=278&rft.issue=44&rft.pages=%3Cspan+class%3D%22nowrap%22%3E43781-%3C%2Fspan%3E6&rft.date=2003-10&rft_id=info%3Adoi%2F10.1074%2Fjbc.M306958200&rft_id=info%3Apmid%2F12928435&rft.aulast=Much&rft.aufirst=B&rft.au=Wahl-Schott%2C+C&rft.au=Zong%2C+X&rft.au=Schneider%2C+A&rft.au=Baumann%2C+L&rft.au=Moosmang%2C+S&rft.au=Ludwig%2C+A&rft.au=Biel%2C+M&rft_id=https%3A%2F%2Fdoi.org%2F10.1074%252Fjbc.M306958200&rfr_id=info%3Asid%2Fen.wikipedia.org%3AHCN4" class="Z3988"></span></li> <li><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222" /><cite id="CITEREFUedaNakamuraHayashiInagaki2004" class="citation journal cs1">Ueda K, Nakamura K, Hayashi T, Inagaki N, Takahashi M, Arimura T, Morita H, Higashiuesato Y, Hirano Y, Yasunami M, Takishita S, Yamashina A, Ohe T, Sunamori M, Hiraoka M, Kimura A (Jun 2004). <a rel="nofollow" class="external text" href="https://doi.org/10.1074%2Fjbc.M311953200">"Functional characterization of a trafficking-defective HCN4 mutation, D553N, associated with cardiac arrhythmia"</a>. <i>The Journal of Biological Chemistry</i>. <b>279</b> (26): <span class="nowrap">27194–</span>8. <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/10.1074%2Fjbc.M311953200">10.1074/jbc.M311953200</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/15123648">15123648</a>.</cite><span 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href="mw-data:TemplateStyles:r1238218222" /><cite id="CITEREFMichelsErKhanSüdkamp2005" class="citation journal cs1">Michels G, Er F, Khan I, Südkamp M, Herzig S, Hoppe UC (Feb 2005). <a rel="nofollow" class="external text" href="https://doi.org/10.1161%2F01.CIR.0000153799.65783.3A">"Single-channel properties support a potential contribution of hyperpolarization-activated cyclic nucleotide-gated channels and If to cardiac arrhythmias"</a>. <i>Circulation</i>. <b>111</b> (4): <span class="nowrap">399–</span>404. <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/10.1161%2F01.CIR.0000153799.65783.3A">10.1161/01.CIR.0000153799.65783.3A</a></span>. <a href="/wiki/PMID_(identifier)" class="mw-redirect" title="PMID (identifier)">PMID</a> <a rel="nofollow" class="external text" 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voltage gating of the mouse and human HCN2 and HCN4 channels"</a>. <i>The Journal of Physiology</i>. <b>575</b> (Pt 2): <span class="nowrap">417–</span>31. <a href="/wiki/Doi_(identifier)" class="mw-redirect" title="Doi (identifier)">doi</a>:<a rel="nofollow" class="external text" href="https://doi.org/10.1113%2Fjphysiol.2006.110437">10.1113/jphysiol.2006.110437</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/PMC1819464">1819464</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/16777944">16777944</a>.</cite><span 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title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=article&rft.jtitle=Circulation&rft.atitle=Point+mutation+in+the+HCN4+cardiac+ion+channel+pore+affecting+synthesis%2C+trafficking%2C+and+functional+expression+is+associated+with+familial+asymptomatic+sinus+bradycardia&rft.volume=116&rft.issue=5&rft.pages=%3Cspan+class%3D%22nowrap%22%3E463-%3C%2Fspan%3E70&rft.date=2007-07&rft_id=info%3Adoi%2F10.1161%2FCIRCULATIONAHA.107.706887&rft_id=info%3Apmid%2F17646576&rft.aulast=Nof&rft.aufirst=E&rft.au=Luria%2C+D&rft.au=Brass%2C+D&rft.au=Marek%2C+D&rft.au=Lahat%2C+H&rft.au=Reznik-Wolf%2C+H&rft.au=Pras%2C+E&rft.au=Dascal%2C+N&rft.au=Eldar%2C+M&rft.au=Glikson%2C+M&rft_id=https%3A%2F%2Fdoi.org%2F10.1161%252FCIRCULATIONAHA.107.706887&rfr_id=info%3Asid%2Fen.wikipedia.org%3AHCN4" class="Z3988"></span></li></ul> </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=HCN4&action=edit&section=5" title="Edit section: External links"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <ul><li><a rel="nofollow" class="external text" href="https://www.ncbi.nlm.nih.gov/books/NBK1517/">GeneReviews/NIH/NCBI/UW entry on Brugada syndrome</a></li> <li><a rel="nofollow" class="external text" href="https://meshb.nlm.nih.gov/record/ui?name=HCN4+protein%2C+human">HCN4+protein,+human</a> at the U.S. National Library of Medicine <a href="/wiki/Medical_Subject_Headings" title="Medical Subject Headings">Medical Subject Headings</a> (MeSH)</li> <li><a rel="nofollow" class="external text" href="https://genome.ucsc.edu/cgi-bin/hgTracks?db=hg38&singleSearch=knownCanonical&position=HCN4"><i>HCN4</i></a> human gene location in the <a href="/wiki/UCSC_Genome_Browser" title="UCSC Genome Browser">UCSC Genome Browser</a>.</li> <li><a rel="nofollow" class="external text" href="https://genome.ucsc.edu/cgi-bin/hgGene?db=hg38&hgg_type=knownGene&hgg_gene=HCN4"><i>HCN4</i></a> human gene details in the <a href="/wiki/UCSC_Genome_Browser" title="UCSC Genome Browser">UCSC Genome Browser</a>.</li></ul> <p><i>This article incorporates text from the <a href="/wiki/United_States_National_Library_of_Medicine" title="United States National Library of Medicine">United States National Library of Medicine</a>, which is in the <a href="/wiki/Public_domain" title="Public domain">public domain</a>.</i> </p> <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 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src="//upload.wikimedia.org/wikipedia/commons/thumb/a/a4/PDB_1q3e_EBI.jpg/180px-PDB_1q3e_EBI.jpg" decoding="async" width="180" height="135" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/a/a4/PDB_1q3e_EBI.jpg/270px-PDB_1q3e_EBI.jpg 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/a/a4/PDB_1q3e_EBI.jpg/360px-PDB_1q3e_EBI.jpg 2x" data-file-width="800" data-file-height="600" /></a></span></div> <div class="gallerytext"><b>1q3e</b>: HCN2J 443-645 in the presence of cGMP</div> </li> <li class="gallerybox" style="width: 215px"> <div class="thumb" style="width: 210px; height: 210px;"><span typeof="mw:File"><a href="/wiki/File:PDB_1q43_EBI.jpg" class="mw-file-description" title="1q43: HCN2I 443-640 in the presence of cAMP, selenomethionine derivative"><img alt="1q43: HCN2I 443-640 in the presence of cAMP, selenomethionine derivative" src="//upload.wikimedia.org/wikipedia/commons/thumb/d/d7/PDB_1q43_EBI.jpg/180px-PDB_1q43_EBI.jpg" decoding="async" width="180" height="135" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/d/d7/PDB_1q43_EBI.jpg/270px-PDB_1q43_EBI.jpg 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/d/d7/PDB_1q43_EBI.jpg/360px-PDB_1q43_EBI.jpg 2x" data-file-width="800" data-file-height="600" /></a></span></div> <div class="gallerytext"><b>1q43</b>: HCN2I 443-640 in the presence of cAMP, selenomethionine derivative</div> </li> <li class="gallerybox" style="width: 215px"> <div class="thumb" style="width: 210px; height: 210px;"><span typeof="mw:File"><a href="/wiki/File:PDB_1q5o_EBI.jpg" class="mw-file-description" title="1q5o: HCN2J 443-645 in the presence of cAMP, selenomethionine derivative"><img alt="1q5o: HCN2J 443-645 in the presence of cAMP, selenomethionine derivative" src="//upload.wikimedia.org/wikipedia/commons/thumb/d/dd/PDB_1q5o_EBI.jpg/180px-PDB_1q5o_EBI.jpg" decoding="async" width="180" height="135" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/d/dd/PDB_1q5o_EBI.jpg/270px-PDB_1q5o_EBI.jpg 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/d/dd/PDB_1q5o_EBI.jpg/360px-PDB_1q5o_EBI.jpg 2x" data-file-width="800" data-file-height="600" /></a></span></div> <div class="gallerytext"><b>1q5o</b>: HCN2J 443-645 in the presence of cAMP, selenomethionine derivative</div> </li> </ul></div></td></tr></tbody></table></div> <div class="navbox-styles"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1129693374" /><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1236075235" /></div><div role="navigation" class="navbox" aria-labelledby="Membrane_transport_protein:_ion_channels_(TC_1A)163" style="padding:3px"><table class="nowraplinks mw-collapsible mw-collapsed navbox-inner" style="border-spacing:0;background:transparent;color:inherit"><tbody><tr><th scope="col" class="navbox-title" colspan="2" style="background:#e7dcc3"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1129693374" /><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1239400231" /><div class="navbar plainlinks hlist navbar-mini"><ul><li class="nv-view"><a href="/wiki/Template:Ion_channels" title="Template:Ion channels"><abbr title="View this template">v</abbr></a></li><li class="nv-talk"><a href="/wiki/Template_talk:Ion_channels" title="Template talk:Ion channels"><abbr title="Discuss this template">t</abbr></a></li><li class="nv-edit"><a href="/wiki/Special:EditPage/Template:Ion_channels" title="Special:EditPage/Template:Ion channels"><abbr title="Edit this template">e</abbr></a></li></ul></div><div id="Membrane_transport_protein:_ion_channels_(TC_1A)163" style="font-size:114%;margin:0 4em"><a href="/wiki/Membrane_transport_protein" title="Membrane transport protein">Membrane transport protein</a>: <a href="/wiki/Ion_channel" title="Ion channel">ion channels</a> (<a href="/wiki/Transporter_Classification_Database#1._Channels/Pores" title="Transporter Classification Database">TC 1A</a>)</div></th></tr><tr><td colspan="2" class="navbox-list navbox-odd hlist" style="width:100%;padding:0"><div style="padding:0 0.25em"></div><table class="nowraplinks mw-collapsible mw-collapsed navbox-subgroup" style="border-spacing:0"><tbody><tr><th scope="col" class="navbox-title" colspan="2" style="background-color: AntiqueWhite;"><div id="Ca2+:_Calcium_channel163" style="font-size:114%;margin:0 4em"><i>Ca<sup>2+</sup>:</i> <a href="/wiki/Calcium_channel" title="Calcium channel">Calcium channel</a></div></th></tr><tr><td colspan="2" class="navbox-list navbox-odd" style="width:100%;padding:0;background:transparent;"><div style="padding:0 0.25em"></div><table class="nowraplinks navbox-subgroup" style="border-spacing:0"><tbody><tr><th scope="row" class="navbox-group" style="width:15em;text-align:left;">Ligand-gated</th><td class="navbox-list-with-group navbox-list navbox-odd" style="padding:0;background-color: AntiqueWhite;"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Inositol_trisphosphate_receptor" title="Inositol trisphosphate receptor">Inositol trisphosphate receptor</a> <ul><li><a href="/wiki/ITPR1" title="ITPR1">1</a></li> <li><a href="/wiki/ITPR2" title="ITPR2">2</a></li> <li><a href="/wiki/ITPR3" title="ITPR3">3</a></li></ul></li> <li><a href="/wiki/Ryanodine_receptor" title="Ryanodine receptor">Ryanodine receptor</a> <ul><li><a href="/wiki/RYR1" class="mw-redirect" title="RYR1">1</a></li> <li><a href="/wiki/Ryanodine_receptor_2" title="Ryanodine receptor 2">2</a></li> <li><a href="/wiki/RYR3" class="mw-redirect" title="RYR3">3</a></li></ul></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:15em;text-align:left;"><a href="/wiki/Voltage-gated_calcium_channel" title="Voltage-gated calcium channel">Voltage-gated</a></th><td class="navbox-list-with-group navbox-list navbox-even" style="padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/L-type_calcium_channel" title="L-type calcium channel">L-type</a>/<i>Ca<sub>v</sub>α</i> <ul><li><a href="/wiki/Cav1.1" title="Cav1.1">1.1</a></li> <li><a href="/wiki/Cav1.2" title="Cav1.2">1.2</a></li> <li><a href="/wiki/Cav1.3" title="Cav1.3">1.3</a></li> <li><a href="/wiki/Cav1.4" title="Cav1.4">1.4</a></li></ul></li> <li><a href="/wiki/N-type_calcium_channel" title="N-type calcium channel">N-type</a>/<i>Ca<sub>v</sub>α2.2</i></li> <li><a href="/wiki/P-type_calcium_channel" title="P-type calcium channel">P-type</a>/<i>Ca<sub>v</sub>α</i> <ul><li><a href="/wiki/Cav2.1" title="Cav2.1">2.1</a></li></ul></li> <li><a href="/wiki/Q-type_calcium_channel" title="Q-type calcium channel">Q-type</a>/<i>Ca<sub>v</sub>α2.1</i></li> <li><a href="/wiki/R-type_calcium_channel" title="R-type calcium channel">R-type</a>/<i>Ca<sub>v</sub>α2.3</i></li> <li><a href="/wiki/T-type_calcium_channel" title="T-type calcium channel">T-type</a>/<i>Ca<sub>v</sub>α</i> <ul><li><a href="/wiki/CACNA1G" title="CACNA1G">3.1</a></li> <li><a href="/wiki/CACNA1H" class="mw-redirect" title="CACNA1H">3.2</a></li> <li><a href="/wiki/CACNA1I" title="CACNA1I">3.3</a></li></ul></li></ul> <ul><li><i>α<sub>2</sub>δ-subunits</i> <ul><li><a href="/wiki/CACNA2D1" title="CACNA2D1">1</a></li> <li><a href="/wiki/CACNA2D2" title="CACNA2D2">2</a></li></ul></li> <li><i>β-subunits</i> <ul><li><a href="/wiki/CACNB1" title="CACNB1">β1</a></li> <li><a href="/wiki/CACNB2" title="CACNB2">β2</a></li> <li><a href="/wiki/CACNB3" title="CACNB3">β3</a></li> <li><a href="/wiki/CACNB4" title="CACNB4">β4</a></li></ul></li> <li><i>γ-subunits</i> <ul><li><a href="/wiki/CACNG1" title="CACNG1">γ1</a></li> <li><a href="/wiki/CACNG2" title="CACNG2">γ2</a></li> <li><a href="/wiki/CACNG3" title="CACNG3">γ3</a></li> <li><a href="/wiki/CACNG4" title="CACNG4">γ4</a></li></ul></li></ul> <ul><li><a href="/wiki/Cation_channels_of_sperm" title="Cation channels of sperm">Cation channels of sperm</a> <ul><li><a href="/wiki/CatSper1" title="CatSper1">1</a></li> <li><a href="/wiki/CatSper2" title="CatSper2">2</a></li> <li><a href="/wiki/CatSper3" title="CatSper3">3</a></li> <li><a href="/wiki/CatSper4" title="CatSper4">4</a></li></ul></li> <li><a href="/wiki/Two-pore_channel" title="Two-pore channel">Two-pore channel</a> <ul><li><a href="/wiki/TPCN1" title="TPCN1">1</a></li> <li><a href="/wiki/TPCN2" title="TPCN2">2</a></li></ul></li></ul> </div></td></tr></tbody></table><div></div></td></tr></tbody></table><div></div></td></tr><tr><td colspan="2" class="navbox-list navbox-odd hlist" style="width:100%;padding:0"><div style="padding:0 0.25em"></div><table class="nowraplinks mw-collapsible mw-collapsed navbox-subgroup" style="border-spacing:0"><tbody><tr><th scope="col" class="navbox-title" colspan="2" style="background-color: AntiqueWhite;"><div id="Na+:_Sodium_channel163" style="font-size:114%;margin:0 4em"><i>Na<sup>+</sup>:</i> <a href="/wiki/Sodium_channel" title="Sodium channel">Sodium channel</a></div></th></tr><tr><td colspan="2" class="navbox-list navbox-odd" style="width:100%;padding:0;background:transparent;"><div style="padding:0 0.25em"></div><table class="nowraplinks navbox-subgroup" style="border-spacing:0"><tbody><tr><th scope="row" class="navbox-group" style="width:15em;text-align:left;">Constitutively active</th><td class="navbox-list-with-group navbox-list navbox-odd" style="padding:0;background-color: AntiqueWhite;"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Epithelial_sodium_channel" title="Epithelial sodium channel">Epithelial sodium channel</a> <ul><li><a href="/wiki/SCNN1A" title="SCNN1A">α</a></li> <li><a href="/wiki/SCNN1B" title="SCNN1B">β</a></li> <li><a href="/wiki/SCNN1G" title="SCNN1G">γ</a></li> <li><a href="/wiki/SCNN1D" title="SCNN1D">δ</a></li></ul></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:15em;text-align:left;"><a href="/wiki/Hydron_(chemistry)" title="Hydron (chemistry)">Proton</a>-gated</th><td class="navbox-list-with-group navbox-list navbox-even" style="padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Acid-sensing_ion_channel" title="Acid-sensing ion channel">Amiloride-sensitive cation channel</a> <ul><li><a href="/wiki/ACCN1" class="mw-redirect" title="ACCN1">1</a></li> <li><a href="/wiki/ACCN2" class="mw-redirect" title="ACCN2">2</a></li> <li><a href="/wiki/ACCN3" class="mw-redirect" title="ACCN3">3</a></li> <li><a href="/wiki/ACCN4" class="mw-redirect" title="ACCN4">4</a></li></ul></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:15em;text-align:left;"><a href="/wiki/Voltage-gated_sodium_channel" title="Voltage-gated sodium channel">Voltage-gated</a></th><td class="navbox-list-with-group navbox-list navbox-odd" style="padding:0;background-color: AntiqueWhite;"><div style="padding:0 0.25em"> <ul><li><i>Na<sub>v</sub>α</i> <ul><li><a href="/wiki/Nav1.1" class="mw-redirect" title="Nav1.1">1.1</a></li> <li><a href="/wiki/Nav1.2" class="mw-redirect" title="Nav1.2">1.2</a></li> <li><a href="/wiki/SCN3A" title="SCN3A">1.3</a></li> <li><a href="/wiki/Nav1.4" title="Nav1.4">1.4</a></li> <li><a href="/wiki/Nav1.5" class="mw-redirect" title="Nav1.5">1.5</a></li> <li><a href="/wiki/SCN8A" title="SCN8A">1.6</a></li> <li><a href="/wiki/Nav1.7" class="mw-redirect" title="Nav1.7">1.7</a></li> <li><a href="/wiki/SCN10A" class="mw-redirect" title="SCN10A">1.8</a></li> <li><a href="/wiki/Nav1.9" title="Nav1.9">1.9</a></li> <li><a href="/wiki/SCN7A" title="SCN7A">7A</a></li></ul></li> <li><i>Na<sub>v</sub>β</i> <ul><li><a href="/wiki/SCN1B" title="SCN1B">1</a></li> <li><a href="/wiki/SCN2B" title="SCN2B">2</a></li> <li><a href="/wiki/SCN3B" title="SCN3B">3</a></li> <li><a href="/wiki/SCN4B" title="SCN4B">4</a></li></ul></li></ul> </div></td></tr></tbody></table><div></div></td></tr></tbody></table><div></div></td></tr><tr><td colspan="2" class="navbox-list navbox-odd hlist" style="width:100%;padding:0"><div style="padding:0 0.25em"></div><table class="nowraplinks mw-collapsible mw-collapsed navbox-subgroup" style="border-spacing:0"><tbody><tr><th scope="col" class="navbox-title" colspan="2" style="background-color: AntiqueWhite;"><div id="K+:_Potassium_channel163" style="font-size:114%;margin:0 4em"><i>K<sup>+</sup>:</i> <a href="/wiki/Potassium_channel" title="Potassium channel">Potassium channel</a></div></th></tr><tr><td colspan="2" class="navbox-list navbox-odd" style="width:100%;padding:0;background:transparent;"><div style="padding:0 0.25em"></div><table class="nowraplinks navbox-subgroup" style="border-spacing:0"><tbody><tr><th scope="row" class="navbox-group" style="width:15em;text-align:left;"><a href="/wiki/Calcium-activated_potassium_channel" title="Calcium-activated potassium channel">Calcium-activated</a></th><td class="navbox-list-with-group navbox-list navbox-odd" style="padding:0;background-color: AntiqueWhite;"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/BK_channel" title="BK channel">BK channel</a> <ul><li><a href="/wiki/Calcium-activated_potassium_channel_subunit_alpha-1" title="Calcium-activated potassium channel subunit alpha-1">α1</a></li> <li><a href="/wiki/KCNMB1" title="KCNMB1">β1</a></li> <li><a href="/wiki/KCNMB2" title="KCNMB2">β2</a></li> <li><a href="/wiki/KCNMB3" title="KCNMB3">β3</a></li> <li><a href="/wiki/KCNMB4" title="KCNMB4">β4</a></li></ul></li> <li><a href="/wiki/SK_channel" title="SK channel">SK channel</a> <ul><li><a href="/wiki/KCNN1" title="KCNN1">SK1</a></li> <li><a href="/wiki/KCNN2" title="KCNN2">SK2</a></li> <li><a href="/wiki/SK3" title="SK3">SK3</a></li></ul></li> <li>IK channel <ul><li><a href="/wiki/KCNN4" title="KCNN4">IK1</a></li></ul></li> <li><i>K<sub>Ca</sub></i> <ul><li><a href="/wiki/Calcium-activated_potassium_channel_subunit_alpha-1" title="Calcium-activated potassium channel subunit alpha-1">1.1</a></li> <li><a href="/wiki/KCNN1" title="KCNN1">2.1</a></li> <li><a href="/wiki/KCNN2" title="KCNN2">2.2</a></li> <li><a href="/wiki/SK3" title="SK3">2.3</a></li> <li><a href="/wiki/KCNN4" title="KCNN4">3.1</a></li> <li><a href="/wiki/KCNT1" title="KCNT1">4.1</a></li> <li><a href="/wiki/KCNT2" title="KCNT2">4.2</a></li> <li><a href="/wiki/KCNU1" title="KCNU1">5.1</a></li></ul></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:15em;text-align:left;"><a href="/wiki/Inward-rectifier_potassium_ion_channel" class="mw-redirect" title="Inward-rectifier potassium ion channel">Inward-rectifier</a></th><td class="navbox-list-with-group navbox-list navbox-even" style="padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/ATP-sensitive_potassium_channel" title="ATP-sensitive potassium channel">K<sub>ATP</sub></a></li> <li><i>K<sub>ir</sub></i> <ul><li><a href="/wiki/ROMK" title="ROMK">1.1</a></li> <li><a href="/wiki/Kir2.1" title="Kir2.1">2.1</a></li> <li><a href="/wiki/KCNJ12" title="KCNJ12">2.2</a></li> <li><a href="/wiki/KCNJ4" title="KCNJ4">2.3</a></li> <li><a href="/wiki/KCNJ14" title="KCNJ14">2.4</a></li> <li><a href="/wiki/Kir2.6" title="Kir2.6">2.6</a></li></ul></li> <li><a href="/wiki/G_protein-coupled_inwardly_rectifying_potassium_channel" title="G protein-coupled inwardly rectifying potassium channel">GIRK</a>/<i>K<sub>ir</sub></i> <ul><li><a href="/wiki/KCNJ3" title="KCNJ3">3.1</a></li> <li><a href="/wiki/KCNJ6" title="KCNJ6">3.2</a></li> <li><a href="/wiki/KCNJ9" title="KCNJ9">3.3</a></li> <li><a href="/wiki/KCNJ5" title="KCNJ5">3.4</a></li></ul></li> <li><i>K<sub>ir</sub></i> <ul><li><a href="/wiki/KCNJ10" title="KCNJ10">4.1</a></li> <li><a href="/wiki/KCNJ15" title="KCNJ15">4.2</a></li> <li><a href="/wiki/KCNJ16" title="KCNJ16">5.1</a></li> <li><a href="/wiki/KCNJ8" title="KCNJ8">6.1</a></li> <li><a href="/wiki/Kir6.2" title="Kir6.2">6.2</a></li> <li><a href="/wiki/KCNJ13" title="KCNJ13">7.1</a></li></ul></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:15em;text-align:left;"><a href="/wiki/Tandem_pore_domain_potassium_channel" class="mw-redirect" title="Tandem pore domain potassium channel">Tandem pore domain</a></th><td class="navbox-list-with-group navbox-list navbox-odd" style="padding:0;background-color: AntiqueWhite;"><div style="padding:0 0.25em"> <ul><li><i>K2P</i> <ul><li><a href="/wiki/KCNK1" title="KCNK1">1</a></li> <li><a href="/wiki/KCNK2" title="KCNK2">2</a></li> <li><a href="/wiki/KCNK3" title="KCNK3">3</a></li> <li><a href="/wiki/KCNK4" title="KCNK4">4</a></li> <li><a href="/wiki/KCNK5" title="KCNK5">5</a></li> <li><a href="/wiki/KCNK6" title="KCNK6">6</a></li> <li><a href="/wiki/KCNK7" title="KCNK7">7</a></li> <li><a href="/wiki/KCNK9" title="KCNK9">9</a></li> <li><a href="/wiki/KCNK10" title="KCNK10">10</a></li> <li><a href="/wiki/KCNK12" title="KCNK12">12</a></li> <li><a href="/wiki/KCNK13" title="KCNK13">13</a></li> <li><a href="/wiki/KCNK15" title="KCNK15">15</a></li> <li><a href="/wiki/KCNK16" title="KCNK16">16</a></li> <li><a href="/wiki/KCNK17" title="KCNK17">17</a></li> <li><a href="/wiki/KCNK18" title="KCNK18">18</a></li></ul></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:15em;text-align:left;"><a href="/wiki/Voltage-gated_potassium_channel" title="Voltage-gated potassium channel">Voltage-gated</a></th><td class="navbox-list-with-group navbox-list navbox-even" style="padding:0"><div style="padding:0 0.25em"> <ul><li><i>K<sub>v</sub>α1-6</i> <ul><li><a href="/wiki/Kv1.1" title="Kv1.1">1.1</a></li> <li><a href="/wiki/KCNA2" title="KCNA2">1.2</a></li> <li><a href="/wiki/KCNA3" title="KCNA3">1.3</a></li> <li><a href="/wiki/KCNA4" title="KCNA4">1.4</a></li> <li><a href="/wiki/KCNA5" title="KCNA5">1.5</a></li> <li><a href="/wiki/KCNA6" title="KCNA6">1.6</a></li> <li><a href="/wiki/KCNA7" title="KCNA7">1.7</a></li> <li><a href="/wiki/KCNA10" title="KCNA10">1.8</a></li></ul></li> <li> <ul><li><a href="/wiki/KCNB1" title="KCNB1">2.1</a></li> <li><a href="/wiki/KCNB2" title="KCNB2">2.2</a></li></ul></li> <li> <ul><li><a href="/wiki/KCNC1" title="KCNC1">3.1</a></li> <li><a href="/wiki/KCNC2" title="KCNC2">3.2</a></li> <li><a href="/wiki/KCNC3" title="KCNC3">3.3</a></li> <li><a href="/wiki/KCNC4" title="KCNC4">3.4</a></li></ul></li> <li> <ul><li><a href="/wiki/KCND1" title="KCND1">4.1</a></li> <li><a href="/wiki/KCND2" title="KCND2">4.2</a></li> <li><a href="/wiki/KCND3" title="KCND3">4.3</a></li></ul></li> <li> <ul><li><a href="/wiki/KCNF1" title="KCNF1">5.1</a></li></ul></li> <li> <ul><li><a href="/wiki/KCNG1" title="KCNG1">6.1</a></li> <li><a href="/wiki/KCNG2" title="KCNG2">6.2</a></li> <li><a href="/wiki/KCNG3" title="KCNG3">6.3</a></li> <li><a href="/wiki/KCNG4" title="KCNG4">6.4</a></li></ul></li></ul> <ul><li><i>K<sub>v</sub>α7-12</i> <ul><li><a href="/wiki/KvLQT1" title="KvLQT1">7.1</a></li> <li><a href="/wiki/KvLQT2" title="KvLQT2">7.2</a></li> <li><a href="/wiki/KvLQT3" title="KvLQT3">7.3</a></li> <li><a href="/wiki/KCNQ4" title="KCNQ4">7.4</a></li> <li><a href="/wiki/KCNQ5" title="KCNQ5">7.5</a></li></ul></li> <li> <ul><li><a href="/wiki/KCNV1" title="KCNV1">8.1</a></li> <li><a href="/wiki/KCNV2" title="KCNV2">8.2</a></li></ul></li> <li> <ul><li><a href="/wiki/KCNS1" title="KCNS1">9.1</a></li> <li><a href="/wiki/KCNS2" title="KCNS2">9.2</a></li> <li><a href="/wiki/KCNS3" title="KCNS3">9.3</a></li></ul></li> <li> <ul><li><a href="/wiki/KCNH1" title="KCNH1">10.1</a></li> <li><a href="/wiki/KCNH5" title="KCNH5">10.2</a></li></ul></li> <li> <ul><li><a href="/wiki/HERG" title="HERG">11.1/hERG</a></li> <li><a href="/wiki/KCNH6" title="KCNH6">11.2</a></li> <li><a href="/wiki/KCNH7" title="KCNH7">11.3</a></li></ul></li> <li> <ul><li><a href="/wiki/KCNH8" title="KCNH8">12.1</a></li> <li><a href="/wiki/KCNH3" title="KCNH3">12.2</a></li> <li><a href="/wiki/KCNH4" title="KCNH4">12.3</a></li></ul></li></ul> <ul><li><i>K<sub>v</sub>β</i> <ul><li><a href="/wiki/KCNAB1" title="KCNAB1">1</a></li> <li><a href="/wiki/KCNAB2" title="KCNAB2">2</a></li> <li><a href="/wiki/KCNAB3" title="KCNAB3">3</a></li></ul></li> <li><i>KCNIP</i> <ul><li><a href="/wiki/KCNIP1" title="KCNIP1">1</a></li> <li><a href="/wiki/KCNIP2" title="KCNIP2">2</a></li> <li><a href="/wiki/Calsenilin" title="Calsenilin">3</a></li> <li><a href="/wiki/KCNIP4" title="KCNIP4">4</a></li></ul></li> <li><a href="/wiki/KCNE1" title="KCNE1">minK/ISK</a></li> <li><a href="/wiki/KCNE1L" class="mw-redirect" title="KCNE1L">minK/ISK-like</a></li> <li><i>MiRP</i> <ul><li><a href="/wiki/KCNE2" title="KCNE2">1</a></li> <li><a href="/wiki/KCNE3" title="KCNE3">2</a></li> <li><a href="/wiki/KCNE4" title="KCNE4">3</a></li></ul></li> <li><a href="/wiki/Shaker_(gene)" title="Shaker (gene)">Shaker (gene)</a></li></ul> </div></td></tr></tbody></table><div></div></td></tr></tbody></table><div></div></td></tr><tr><td colspan="2" class="navbox-list navbox-odd hlist" style="width:100%;padding:0"><div style="padding:0 0.25em"></div><table class="nowraplinks mw-collapsible uncollapsed navbox-subgroup" style="border-spacing:0"><tbody><tr><th scope="col" class="navbox-title" colspan="2" style="background-color: AntiqueWhite;"><div id="Miscellaneous163" style="font-size:114%;margin:0 4em"><i>Miscellaneous</i></div></th></tr><tr><td colspan="2" class="navbox-list navbox-odd" style="width:100%;padding:0;background:transparent;"><div style="padding:0 0.25em"></div><table class="nowraplinks navbox-subgroup" style="border-spacing:0"><tbody><tr><th scope="row" class="navbox-group" style="width:15em;text-align:left;"><i><a href="/wiki/Chloride" title="Chloride">Cl<sup>−</sup></a>:</i> <a href="/wiki/Chloride_channel" title="Chloride channel">Chloride channel</a></th><td class="navbox-list-with-group navbox-list navbox-odd" style="padding:0;background-color: AntiqueWhite;"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Calcium-activated_chloride_channel" class="mw-redirect" title="Calcium-activated chloride channel">Calcium-activated chloride channels</a> <ul><li><i>Anoctamin</i> <ul><li><a href="/wiki/ANO1" title="ANO1">ANO1</a></li></ul></li> <li><i>Bestrophin</i> <ul><li><a href="/wiki/Bestrophin_1" title="Bestrophin 1">1</a></li> <li><a href="/wiki/BEST2" class="mw-redirect" title="BEST2">2</a></li></ul></li> <li><i>Chloride Channel Accessory</i> <ul><li><a href="/wiki/CLCA1" title="CLCA1">1</a></li> <li><a href="/wiki/CLCA2" title="CLCA2">2</a></li> <li><a href="/wiki/CLCA3" title="CLCA3">3</a></li> <li><a href="/wiki/CLCA4" title="CLCA4">4</a></li></ul></li></ul></li> <li><a href="/wiki/Cystic_fibrosis_transmembrane_conductance_regulator" title="Cystic fibrosis transmembrane conductance regulator">CFTR</a></li> <li><i>CLCN</i> <ul><li><a href="/wiki/CLCN1" title="CLCN1">1</a></li> <li><a href="/wiki/CLCN2" title="CLCN2">2</a></li> <li><a href="/wiki/CLCN3" title="CLCN3">3</a></li> <li><a href="/wiki/CLCN4" title="CLCN4">4</a></li> <li><a href="/wiki/CLCN5" title="CLCN5">5</a></li> <li><a href="/wiki/CLCN6" title="CLCN6">6</a></li> <li><a href="/wiki/CLCN7" title="CLCN7">7</a></li> <li><a href="/wiki/CLCNKA" title="CLCNKA">KA</a></li> <li><a href="/wiki/CLCNKB" title="CLCNKB">KB</a></li></ul></li> <li><i>CLIC</i> <ul><li><a href="/wiki/CLIC1" title="CLIC1">1</a></li> <li><a href="/wiki/CLIC2" title="CLIC2">2</a></li> <li><a href="/wiki/CLIC3" title="CLIC3">3</a></li> <li><a href="/wiki/CLIC4" title="CLIC4">4</a></li> <li><a href="/wiki/CLIC5" title="CLIC5">5</a></li> <li><a href="/wiki/CLIC6" title="CLIC6">6</a></li> <li><a href="/wiki/CLCC1" title="CLCC1">L1</a></li></ul></li> <li><i>CLNS</i> <ul><li><a href="/wiki/CLNS1A" title="CLNS1A">1A</a></li> <li><a href="/wiki/CLNS1B" title="CLNS1B">1B</a></li></ul></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:15em;text-align:left;"><i><a href="/wiki/Hydron_(chemistry)" title="Hydron (chemistry)">H<sup>+</sup></a>:</i> <a href="/wiki/Voltage-gated_proton_channel" title="Voltage-gated proton channel">Proton channel</a></th><td class="navbox-list-with-group navbox-list navbox-even" style="padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/HVCN1" title="HVCN1">HVCN1</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:15em;text-align:left;"><i><a href="/wiki/Ion#Anions_and_cations" title="Ion">M<sup>+</sup></a>:</i> <a href="/wiki/Cyclic_nucleotide-gated_ion_channel" class="mw-redirect" title="Cyclic nucleotide-gated ion channel">CNG cation channel</a></th><td class="navbox-list-with-group navbox-list navbox-odd" style="padding:0;background-color: AntiqueWhite;"><div style="padding:0 0.25em"> <ul><li><i>α</i> <ul><li><a href="/wiki/Cyclic_nucleotide-gated_channel_alpha_1" title="Cyclic nucleotide-gated channel alpha 1">1</a></li> <li><a href="/wiki/Cyclic_nucleotide-gated_channel_alpha_2" title="Cyclic nucleotide-gated channel alpha 2">2</a></li> <li><a href="/wiki/Cyclic_nucleotide-gated_channel_alpha_3" title="Cyclic nucleotide-gated channel alpha 3">3</a></li> <li><a href="/wiki/Cyclic_nucleotide-gated_channel_alpha_4" title="Cyclic nucleotide-gated channel alpha 4">4</a></li></ul></li> <li><i>β</i> <ul><li><a href="/wiki/CNGB1" title="CNGB1">1</a></li> <li><a href="/wiki/Cyclic_nucleotide-gated_channel_alpha_4" title="Cyclic nucleotide-gated channel alpha 4">2</a></li> <li><a href="/wiki/Cyclic_nucleotide_gated_channel_beta_3" title="Cyclic nucleotide gated channel beta 3">3</a></li></ul></li> <li><i><a href="/wiki/HCN_channel" title="HCN channel">HCN</a></i> <ul><li><a href="/wiki/Funny_current" class="mw-redirect" title="Funny current">FC</a></li> <li><a href="/wiki/HCN1" title="HCN1">1</a></li> <li><a href="/wiki/HCN2" title="HCN2">2</a></li> <li><a href="/wiki/HCN3" title="HCN3">3</a></li> <li><a class="mw-selflink selflink">4</a></li></ul></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:15em;text-align:left;"><i><a href="/wiki/Ion#Anions_and_cations" title="Ion">M<sup>+</sup></a>:</i> <a href="/wiki/Transient_receptor_potential_channel" title="Transient receptor potential channel">TRP cation channel</a></th><td class="navbox-list-with-group navbox-list navbox-even" style="padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/TRPA_(channel)" class="mw-redirect" title="TRPA (channel)">TRPA</a> (<a href="/wiki/Transient_receptor_potential_cation_channel,_member_A1" class="mw-redirect" title="Transient receptor potential cation channel, member A1">1</a>)</li> <li><a href="/wiki/TRPC" title="TRPC">TRPC</a> <ul><li><a href="/wiki/TRPC1" title="TRPC1">1</a></li> <li><a href="/wiki/TRPC2" title="TRPC2">2</a></li> <li><a href="/wiki/TRPC3" title="TRPC3">3</a></li> <li><a href="/wiki/TRPC4" title="TRPC4">4</a></li> <li><a href="/wiki/TRPC4AP" title="TRPC4AP">4AP</a></li> <li><a href="/wiki/TRPC5" title="TRPC5">5</a></li> <li><a href="/wiki/TRPC6" title="TRPC6">6</a></li> <li><a href="/wiki/TRPC7" title="TRPC7">7</a></li></ul></li> <li><a href="/wiki/TRPM" title="TRPM">TRPM</a> <ul><li><a href="/wiki/TRPM1" title="TRPM1">1</a></li> <li><a href="/wiki/TRPM2" title="TRPM2">2</a></li> <li><a href="/wiki/TRPM3" title="TRPM3">3</a></li> <li><a href="/wiki/TRPM4" title="TRPM4">4</a></li> <li><a href="/wiki/TRPM5" title="TRPM5">5</a></li> <li><a href="/wiki/TRPM6" title="TRPM6">6</a></li> <li><a href="/wiki/TRPM7" title="TRPM7">7</a></li> <li><a href="/wiki/TRPM8" title="TRPM8">8</a></li></ul></li> <li><a href="/wiki/TRPML" title="TRPML">TRPML</a> <ul><li><a href="/wiki/Mucolipin-1" class="mw-redirect" title="Mucolipin-1">1</a></li> <li><a href="/wiki/MCOLN2" title="MCOLN2">2</a></li> <li><a href="/wiki/MCOLN3" title="MCOLN3">3</a></li></ul></li> <li><a href="/wiki/TRPN" title="TRPN">TRPN</a></li> <li><a href="/wiki/TRPP" title="TRPP">TRPP</a> <ul><li><a href="/wiki/PKD1" class="mw-redirect" title="PKD1">1</a></li> <li><a href="/wiki/Polycystic_kidney_disease_2" class="mw-redirect" title="Polycystic kidney disease 2">2</a></li></ul></li> <li><a href="/wiki/TRPV" title="TRPV">TRPV</a> <ul><li><a href="/wiki/TRPV1" title="TRPV1">1</a></li> <li><a href="/wiki/TRPV2" title="TRPV2">2</a></li> <li><a href="/wiki/TRPV3" title="TRPV3">3</a></li> <li><a href="/wiki/TRPV4" title="TRPV4">4</a></li> <li><a href="/wiki/TRPV5" title="TRPV5">5</a></li> <li><a href="/wiki/TRPV6" title="TRPV6">6</a></li></ul></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:15em;text-align:left;"><i><a href="/wiki/Water" title="Water">H<sub>2</sub>O</a> (+ <a href="/wiki/Solutes" class="mw-redirect" title="Solutes">solutes</a>):</i> <a href="/wiki/Porin_(protein)" title="Porin (protein)">Porin</a></th><td class="navbox-list-with-group navbox-list navbox-odd" style="padding:0;background-color: AntiqueWhite;"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Aquaporin" title="Aquaporin">Aquaporin</a> <ul><li><a href="/wiki/MIP_(gene)" class="mw-redirect" title="MIP (gene)">0</a></li> <li><a href="/wiki/Aquaporin_1" class="mw-redirect" title="Aquaporin 1">1</a></li> <li><a href="/wiki/Aquaporin_2" class="mw-redirect" title="Aquaporin 2">2</a></li> <li><a href="/wiki/Aquaporin_3" class="mw-redirect" title="Aquaporin 3">3</a></li> <li><a href="/wiki/Aquaporin_4" class="mw-redirect" title="Aquaporin 4">4</a></li> <li><a href="/wiki/AQP5" class="mw-redirect" title="AQP5">5</a></li> <li><a href="/wiki/AQP6" class="mw-redirect" title="AQP6">6</a></li> <li><a href="/wiki/AQP7" class="mw-redirect" title="AQP7">7</a></li> <li><a href="/wiki/AQP8" class="mw-redirect" title="AQP8">8</a></li> <li><a href="/wiki/AQP9" class="mw-redirect" title="AQP9">9</a></li></ul></li> <li><a href="/wiki/Voltage-dependent_anion_channel" title="Voltage-dependent anion channel">Voltage-dependent anion channel</a> <ul><li><a href="/wiki/VDAC1" title="VDAC1">1</a></li> <li><a href="/wiki/VDAC2" title="VDAC2">2</a></li> <li><a href="/wiki/VDAC3" title="VDAC3">3</a></li></ul></li> <li><a href="/wiki/General_bacterial_porin_family" title="General bacterial porin family">General bacterial porin family</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:15em;text-align:left;"><i><a href="/wiki/Cytoplasm" title="Cytoplasm">Cytoplasm</a>:</i> <a href="/wiki/Gap_junction" title="Gap junction">Gap junction</a></th><td class="navbox-list-with-group navbox-list navbox-even" style="padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Connexin" title="Connexin">Connexin</a> <ul><li>A <ul><li><a href="/wiki/GJA1" title="GJA1">GJA1</a></li> <li><a href="/wiki/GJA3" title="GJA3">GJA3</a></li> <li><a href="/wiki/GJA4" title="GJA4">GJA4</a></li> <li><a href="/wiki/GJA5" title="GJA5">GJA5</a></li> <li><a href="/wiki/GJA8" title="GJA8">GJA8</a></li> <li><a href="/wiki/GJD2" title="GJD2">GJA9</a></li> <li><a href="/wiki/GJA10" title="GJA10">GJA10</a></li></ul></li> <li>B <ul><li><a href="/wiki/GJB1" title="GJB1">GJB1</a></li> <li><a href="/wiki/GJB2" title="GJB2">GJB2</a></li> <li><a href="/wiki/GJB3" title="GJB3">GJB3</a></li> <li><a href="/wiki/GJB4" title="GJB4">GJB4</a></li> <li><a href="/wiki/GJB5" title="GJB5">GJB5</a></li> <li><a href="/wiki/GJB6" title="GJB6">GJB6</a></li> <li><a href="/wiki/GJB7" title="GJB7">GJB7</a></li></ul></li> <li>C <ul><li><a href="/wiki/GJC1" title="GJC1">GJC1</a></li> <li><a href="/wiki/GJC2" title="GJC2">GJC2</a></li> <li><a href="/wiki/GJC3" title="GJC3">GJC3</a></li></ul></li> <li>D <ul><li><a href="/wiki/GJD2" title="GJD2">GJD2</a></li> <li><a href="/wiki/GJD3" title="GJD3">GJD3</a></li> <li><a href="/wiki/GJD4" title="GJD4">GJD4</a></li></ul></li></ul></li> <li><a href="/wiki/Innexin" title="Innexin">Innexin</a></li></ul> </div></td></tr></tbody></table><div></div></td></tr></tbody></table><div></div></td></tr><tr><td colspan="2" class="navbox-list navbox-odd hlist" style="width:100%;padding:0"><div style="padding:0 0.25em"></div><table class="nowraplinks mw-collapsible mw-collapsed navbox-subgroup" style="border-spacing:0"><tbody><tr><th scope="col" class="navbox-title" colspan="2" style="background-color: AntiqueWhite;"><div id="By_gating_mechanism163" style="font-size:114%;margin:0 4em"><i>By gating mechanism</i></div></th></tr><tr><td colspan="2" class="navbox-list navbox-odd" style="width:100%;padding:0;background:transparent;"><div style="padding:0 0.25em"></div><table class="nowraplinks navbox-subgroup" style="border-spacing:0"><tbody><tr><th id="Ion_channel_class21" scope="row" class="navbox-group" style="width:15em;text-align:left;"><i>Ion channel class</i></th><td class="navbox-list-with-group navbox-list navbox-odd" style="padding:0;background-color: AntiqueWhite;"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Ligand-gated_ion_channel" title="Ligand-gated ion channel">Ligand-gated</a></li> <li><a href="/wiki/Light-gated_ion_channel" title="Light-gated ion channel">Light-gated</a></li> <li><a href="/wiki/Voltage-gated_ion_channel" title="Voltage-gated ion channel">Voltage-gated</a></li> <li><a href="/wiki/Stretch-activated_ion_channel" class="mw-redirect" title="Stretch-activated ion channel">Stretch-activated</a></li></ul> </div></td></tr></tbody></table><div></div></td></tr></tbody></table><div></div></td></tr><tr><td class="navbox-abovebelow" colspan="2" style="background-color: AntiqueWhite; padding: 0px;"><div><i>see also <a href="/wiki/Template:Channelopathy" title="Template:Channelopathy">disorders</a></i></div></td></tr></tbody></table></div> <p><br /> </p> <style data-mw-deduplicate="TemplateStyles:r1271159938">.mw-parser-output .asbox{position:relative;overflow:hidden}.mw-parser-output .asbox table{background:transparent}.mw-parser-output .asbox 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