Protein:KCNQ1 |
Protein Summary |
 Gene summary |
| Gene name: KCNQ1 | ASpdb.0 ID: 3784 | Gene | Gene symbol | KCNQ1 | Gene ID | 3784 |
| Gene name | potassium voltage-gated channel subfamily Q member 1 |
| Synonyms | ATFB1|ATFB3|JLNS1|KCNA8|KCNA9|KVLQT1|Kv1.9|Kv7.1|LQT|LQT1|RWS|SQT2|WRS |
| Cytomap | 11p15.5-p15.4 |
| Type of gene | protein-coding |
| Description | potassium voltage-gated channel subfamily KQT member 1IKs producing slow voltage-gated potassium channel subunit alpha KvLQT1kidney and cardiac voltage dependend K+ channelpotassium channel, voltage gated KQT-like subfamily Q, member 1potassium voltag |
| Modification date | 20240411 |
| UniProtAcc | P51787 |
| Gene ontology of this gene with evidence of Inferred from Direct Assay (IDA) from Entrez |
| Partner | Gene | GO ID | GO term | PubMed ID |
| Gene | KCNQ1 | GO:0005249 | voltage-gated potassium channel activity | 16002409 |
| Gene | KCNQ1 | GO:0005249 | voltage-gated potassium channel activity | 8900283|17289006|24595108|24855057 |
| Gene | KCNQ1 | GO:0005251 | delayed rectifier potassium channel activity | 8900283|9354802|10400998|11299204|19646991 |
| Gene | KCNQ1 | GO:0005251 | delayed rectifier potassium channel activity | 12522251|24184248|24269949|25037568 |
| Gene | KCNQ1 | GO:0005516 | calmodulin binding | 18165683 |
| Gene | KCNQ1 | GO:0005546 | phosphatidylinositol-4,5-bisphosphate binding | 25037568 |
| Gene | KCNQ1 | GO:0005737 | cytoplasm | 25037568 |
| Gene | KCNQ1 | GO:0005764 | lysosome | 21957902 |
| Gene | KCNQ1 | GO:0005769 | early endosome | 21957902 |
| Gene | KCNQ1 | GO:0005770 | late endosome | 21957902 |
| Gene | KCNQ1 | GO:0005783 | endoplasmic reticulum | 21228319|24855057 |
| Gene | KCNQ1 | GO:0005886 | plasma membrane | 10646604|21228319|22024150|23529131|24184248|25037568|25705178 |
| Gene | KCNQ1 | GO:0008076 | voltage-gated potassium channel complex | 16002409|17289006|19646991 |
| Gene | KCNQ1 | GO:0008157 | protein phosphatase 1 binding | 11799244 |
| Gene | KCNQ1 | GO:0015271 | outward rectifier potassium channel activity | 9312006|11101505|25705178 |
| Gene | KCNQ1 | GO:0016323 | basolateral plasma membrane | 21228319|21957902 |
| Gene | KCNQ1 | GO:0034236 | protein kinase A catalytic subunit binding | 11799244 |
| Gene | KCNQ1 | GO:0034237 | protein kinase A regulatory subunit binding | 11799244 |
| Gene | KCNQ1 | GO:0045121 | membrane raft | 20533308|24855057 |
| Gene | KCNQ1 | GO:0060306 | regulation of membrane repolarization | 11299204 |
| Gene | KCNQ1 | GO:0071320 | cellular response to cAMP | 11299204|16002409 |
| Gene | KCNQ1 | GO:0071466 | cellular response to xenobiotic stimulus | 9108097 |
| Gene | KCNQ1 | GO:0071805 | potassium ion transmembrane transport | 9354802|11299204|16002409|16556866 |
| Gene | KCNQ1 | GO:0086011 | membrane repolarization during action potential | 8900283|11299204|19646991 |
| Gene | KCNQ1 | GO:0097623 | potassium ion export across plasma membrane | 8900283|10400998|17289006 |
| Gene | KCNQ1 | GO:1901381 | positive regulation of potassium ion transmembrane transport | 8900283 |
AS Summary |
| Information of the canonical protein with experimentally identified structure from PDB (2023). |
| UniProt Acc | File name | PDB ID | Method | Resolution | Chain | Start | End |
| P51787-1 | P51787-1_6v00_A.pdb | 6V00 | EM | 3.1 | A | 104 | 569 |
| ASpdb's canonical and alternatively spliced isoform information. |
| accession_id | gene_name | canonical_id | alternative_id | canonical_length | alternative_length | canonical_start | canonical_end | type | originalSEQ | variationSEQ | alternative_start | alternative_end |
| P51787 | KCNQ1 | P51787-1 | P51787-2 | 676 | 549 | 1 | 127 | Deletion | none | none | 0 | 0 |
| P51787 | KCNQ1 | P51787-1 | P51787-2 | 676 | 549 | 128 | 129 | Substitution | AV | MD | 1 | 2 |
| Multiple sequence alignment of our canonical and alternatively spliced KCNQ1 |
| Matched gene isoform IDs with Ensembl and RefSeq of our canonical and alternative spliced genes of KCNQ1 |
| UniProt-id | ENSG | ENST | ENSP |
| P51787-1 | ENSG00000053918.19 | ENST00000155840.12 | ENSP00000155840.2 |
| P51787-2 | ENSG00000053918.19 | ENST00000335475.6 | ENSP00000334497.5 |
| UniProt-id | NM ID | NP ID |
| P51787-1 | NM_000218.2 | NP_000209.2 |
| P51787-2 | NM_181798.1 | NP_861463.1 |
| Amino acid sequences of our canonical and alternatively spliced KCNQ1 |
| accession_id | Protein sequence |
| P51787-1 | MAAASSPPRAERKRWGWGRLPGARRGSAGLAKKCPFSLELAEGGPAGGALYAPIAPGAPGPAPPASPAAPAAPPVASDLGPRPPVSLDPR VSIYSTRRPVLARTHVQGRVYNFLERPTGWKCFVYHFAVFLIVLVCLIFSVLSTIEQYAALATGTLFWMEIVLVVFFGTEYVVRLWSAGC RSKYVGLWGRLRFARKPISIIDLIVVVASMVVLCVGSKGQVFATSAIRGIRFLQILRMLHVDRQGGTWRLLGSVVFIHRQELITTLYIGF LGLIFSSYFVYLAEKDAVNESGRVEFGSYADALWWGVVTVTTIGYGDKVPQTWVGKTIASCFSVFAISFFALPAGILGSGFALKVQQKQR QKHFNRQIPAAASLIQTAWRCYAAENPDSSTWKIYIRKAPRSHTLLSPSPKPKKSVVVKKKKFKLDKDNGVTPGEKMLTVPHITCDPPEE RRLDHFSVDGYDSSVRKSPTLLEVSMPHFMRTNSFAEDLDLEGETLLTPITHISQLREHHRATIKVIRRMQYFVAKKKFQQARKPYDVRD VIEQYSQGHLNLMVRIKELQRRLDQSIGKPSLFISVSEKSKDRGSNTIGARLNRVEDKVTQLDQRLALITDMLHQLLSLHGGSTPGSGGP |
| P51787-2 | MDFLIVLVCLIFSVLSTIEQYAALATGTLFWMEIVLVVFFGTEYVVRLWSAGCRSKYVGLWGRLRFARKPISIIDLIVVVASMVVLCVGS KGQVFATSAIRGIRFLQILRMLHVDRQGGTWRLLGSVVFIHRQELITTLYIGFLGLIFSSYFVYLAEKDAVNESGRVEFGSYADALWWGV VTVTTIGYGDKVPQTWVGKTIASCFSVFAISFFALPAGILGSGFALKVQQKQRQKHFNRQIPAAASLIQTAWRCYAAENPDSSTWKIYIR KAPRSHTLLSPSPKPKKSVVVKKKKFKLDKDNGVTPGEKMLTVPHITCDPPEERRLDHFSVDGYDSSVRKSPTLLEVSMPHFMRTNSFAE DLDLEGETLLTPITHISQLREHHRATIKVIRRMQYFVAKKKFQQARKPYDVRDVIEQYSQGHLNLMVRIKELQRRLDQSIGKPSLFISVS EKSKDRGSNTIGARLNRVEDKVTQLDQRLALITDMLHQLLSLHGGSTPGSGGPPREGGAHITQPCGSGGSVDPELFLPSNTLPTYEQLTV |
Protein Functional Features |
| Main function of this protein. (from UniProt) |
| KCNQ1 (go to UniProt):P51787 |
| Retention analysis result of protein across 39 protein features of UniProt such as six molecule processing features, 13 region features, four site features, six amino acid modification features, two natural variation features, five experimental info features, and 3 secondary structure features. Here, because of limited space for viewing, we only show the protein feature retention information belong to the 13 regional features. All retention annotation result can be downloaded at * Minus value of BPloci means that the break pointn is located before the CDS. |
| - Retained protein feature among the 13 regional features. |
| Accession_id | Subsection | Start | End | Funcitonal feature | Splicing information |
| P51787 | Topological domain | 1 | 121 | Note=Cytoplasmic;Ontology_term=ECO:0000255;evidence=ECO:0000255 | Type=Deletion;Start=1;End=127 |
| P51787 | Transmembrane | 122 | 142 | Note=Helical%3B Name%3DSegment S1;Ontology_term=ECO:0000255;evidence=ECO:0000255 | Type=Deletion;Start=1;End=127 |
| P51787 | Transmembrane | 122 | 142 | Note=Helical%3B Name%3DSegment S1;Ontology_term=ECO:0000255;evidence=ECO:0000255 | Type=Substitution;Start=128;End=129 |
| P51787 | Region | 1 | 28 | Note=Disordered;Ontology_term=ECO:0000256;evidence=ECO:0000256|SAM:MobiDB-lite | Type=Deletion;Start=1;End=127 |
| P51787 | Region | 62 | 84 | Note=Disordered;Ontology_term=ECO:0000256;evidence=ECO:0000256|SAM:MobiDB-lite | Type=Deletion;Start=1;End=127 |
| P51787 | Compositional bias | 62 | 80 | Note=Pro residues;Ontology_term=ECO:0000256;evidence=ECO:0000256|SAM:MobiDB-lite | Type=Deletion;Start=1;End=127 |
Gene Isoform Structures and Expression Levels for KCNQ1 |
| Gene structures of our canonical and alternative spliced genes of KCNQ1 * Click on the image to open the UCSC genome browser with custom track showing this image in a new window. |
| Expression levels of gene isoforms across GTEx. |
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| Expression levels of gene isoforms across TCGA. |
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Protein Structures |
| PDB and CIF files of the predicted protein structures * Here we show the 3D structure of the proteins using Mol*. AlphaFold produces a per-residue confidence score (pLDDT) between 0 and 100. Model confidence is shown from the pLDDT values per residue. pLDDT corresponds to the model’s prediction of its score on the local Distance Difference Test. It is a measure of local accuracy (from AlphfaFold website). To color code individual residues, we transformed individual PDB files into CIF format. |
| 3D view using mol* of P51787-1 |
| 3D view using mol* of P51787-2 |
pLDDT Score Distribution |
| pLDDT score distribution of the predicted protein structures from AlphaFold2 * AlphaFold produces a per-residue confidence score (pLDDT) between 0 and 100. |
| pLDDT distribution across the protein length of P51787-1 |
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| pLDDT distribution across the protein length of P51787-2 |
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Ramachandran Plot of Protein Structures |
| Ramachandran plot of the torsional angles - phi (φ)and psi (ψ) - of the residues (amino acids) contained in this protein peptide. |
| Ramachandran plot of P51787-1 |
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Potential Active Site Information |
| The potential binding sites of these proteins were identified using SiteMap, a module of the Schrodinger suite. |
| UniProt-id | Site score | Size | D score | Volume | Exposure | Enclosure | Contact | Phobic | Philic | Balance | Don/Acc | Residues |
| P51787-1 | 1.024 | 118 | 0.965 | 304.241 | 0.464 | 0.734 | 0.972 | 0.25 | 1.275 | 0.196 | 1.213 | 572,573,575,576,578,579,580,581,582,583,585,589,59 0,593,594,596,597,601 |
| P51787-2 | 1.032 | 104 | 1.075 | 426.692 | 0.619 | 0.693 | 0.877 | 0.725 | 0.861 | 0.842 | 0.852 | 235,239,242,243,245,246,249,250,253,267,268,347,34 9,390,391,394,397,398,400,401,404,405,409,412,413, 416,417,420 |
Protein Structure and Feature Comparision |
| Protein Structure Comparision Using Template Modeling Scores (TM-score). |
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| Protein Structure Comparision Visualization with mol*. between Canonical predicted structure (AF2)(orange) vs Canonical validated structure (PDB)(green) |
| 3D view using mol* of P51787-1_P51787-1_6v00_A.pdb |
| Protein Structure Comparision Visualization with mol*. between Canonical validated structure (PDB)(orange) vs Alternative predicted structure (AF2)(green) |
| 3D view using mol* of P51787-1_6v00_A_P51787-2.pdb |
| Protein Structure Comparision Visualization with mol*. between Canonical predicted structure (AF2)(orange) vs Alternative predicted structure (AF2)(green) |
| 3D view using mol* of P51787-1_P51787-2.pdb |
| Protein Feature Comparison of the protein sequendary structures among the protiens. |
| ./stats/secondary_structure/figure/P51787-1_vs_P51787-2.png |
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| Protein Feature Comparison of the relative accessible surface area (ASA) among the protiens. |
| ./stats/relative_asa/P51787-1_vs_P51787-2.png |
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Protein-Protein Interaction |
| Interactors from UniProt. |
| Accession_id | Subsection | Start | End | Funcitonal feature | Splicing information |
| Interactors from STRING. |
| Gene name | Interactors |
Related Drugs to KCNQ1 |
| Drugs targeting this gene/protein. (DrugBank) |
| UniProt accession | Gene name | DrugBank ID | Drug name | Drug group | Actions |
| P51787 | KCNQ1 | DB01244 | Bepridil | approved, withdrawn | inhibitor |
| P51787 | KCNQ1 | DB11633 | Isavuconazole | approved, investigational | inhibitor |
| P51787 | KCNQ1 | DB04957 | Azimilide | investigational | |
| P51787 | KCNQ1 | DB04855 | Dronedarone | approved | inhibitor |
| P51787 | KCNQ1 | DB06089 | ICA-105665 | investigational |
Related Diseases to KCNQ1 |
| Previous studies relating to the alternative splicing of KCNQ1 and disease information from the MeSH term (PubMed) |
| Gene | PMID | Title | Abstract | MeSH ID | MeSH term |
Clinically important variants in KCNQ1 |
| (ClinVar, 04/20/2024) |
| accession_id | uniprot_id | gene_name | Type | Variant | Clinical_significance |
| P51787 | P51787-1 | KCNQ1 | single nucleotide variant | p.Gln357His | not provided |
| P51787 | P51787-1 | KCNQ1 | single nucleotide variant | p.Gln357His | not provided |
| P51787 | P51787-1 | KCNQ1 | Duplication | p.Gln601_Leu602insValThrGln | Uncertain significance |
| P51787 | P51787-1 | KCNQ1 | Duplication | p.Gln601_Leu602insValThrGln | Uncertain significance |
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