FUNCTION: Pore-forming (alpha) subunit of voltage-gated inwardly rectifying potassium channel. Channel properties are modulated by cAMP and subunit assembly. Mediates the rapidly activating component of the delayed rectifying potassium current in heart (IKr) (PubMed:18559421, PubMed:26363003, PubMed...
FUNCTION: Pore-forming (alpha) subunit of voltage-gated inwardly rectifying potassium channel. Channel properties are modulated by cAMP and subunit assembly. Mediates the rapidly activating component of the delayed rectifying potassium current in heart (IKr) (PubMed:18559421, PubMed:26363003, PubMed:27916661). {ECO:0000269|PubMed:18559421, ECO:0000269|PubMed:26363003, ECO:0000269|PubMed:27916661}.; FUNCTION: [Isoform A-USO]: Has no channel activity by itself, but modulates channel characteristics by forming heterotetramers with other isoforms which are retained intracellularly and undergo ubiquitin-dependent degradation. {ECO:0000269|PubMed:18559421}.; FUNCTION: [Isoform B-USO]: Has no channel activity by itself, but modulates channel characteristics by forming heterotetramers with other isoforms which are retained intracellularly and undergo ubiquitin-dependent degradation. {ECO:0000269|PubMed:18559421}.
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GO - Biological processes (BP):
cardiac muscle contraction [GO:0060048]; cellular response to xenobiotic stimulus [GO:0071466]; membrane depolarization during action potential [GO:0086010]; membrane repolarization [GO:0086009]; membrane repolarization during action potential [GO:0086011]; membrane repolarization during cardiac mus...
cardiac muscle contraction [GO:0060048]; cellular response to xenobiotic stimulus [GO:0071466]; membrane depolarization during action potential [GO:0086010]; membrane repolarization [GO:0086009]; membrane repolarization during action potential [GO:0086011]; membrane repolarization during cardiac muscle cell action potential [GO:0086013]; membrane repolarization during ventricular cardiac muscle cell action potential [GO:0098915]; negative regulation of potassium ion export across plasma membrane [GO:1903765]; negative regulation of potassium ion transmembrane transport [GO:1901380]; positive regulation of potassium ion transmembrane transport [GO:1901381]; positive regulation of transcription, DNA-templated [GO:0045893]; potassium ion export across plasma membrane [GO:0097623]; potassium ion homeostasis [GO:0055075]; potassium ion import across plasma membrane [GO:1990573]; potassium ion transmembrane transport [GO:0071805]; regulation of heart rate by cardiac conduction [GO:0086091]; regulation of heart rate by hormone [GO:0003064]; regulation of membrane potential [GO:0042391]; regulation of membrane repolarization [GO:0060306]; regulation of potassium ion transmembrane transport [GO:1901379]; regulation of ventricular cardiac muscle cell membrane repolarization [GO:0060307]; ventricular cardiac muscle cell action potential [GO:0086005]
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GO - Molecular function (MF):
C3HC4-type RING finger domain binding [GO:0055131]; delayed rectifier potassium channel activity [GO:0005251]; identical protein binding [GO:0042802]; inward rectifier potassium channel activity [GO:0005242]; protein homodimerization activity [GO:0042803]; scaffold protein binding [GO:0097110]; tran...
C3HC4-type RING finger domain binding [GO:0055131]; delayed rectifier potassium channel activity [GO:0005251]; identical protein binding [GO:0042802]; inward rectifier potassium channel activity [GO:0005242]; protein homodimerization activity [GO:0042803]; scaffold protein binding [GO:0097110]; transcription cis-regulatory region binding [GO:0000976]; ubiquitin protein ligase binding [GO:0031625]; voltage-gated potassium channel activity [GO:0005249]; voltage-gated potassium channel activity involved in cardiac muscle cell action potential repolarization [GO:0086008]; voltage-gated potassium channel activity involved in ventricular cardiac muscle cell action potential repolarization [GO:1902282]
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GO - Cellular component (CC):
cell surface [GO:0009986]; integral component of plasma membrane [GO:0005887]; inward rectifier potassium channel complex [GO:1902937]; perinuclear region of cytoplasm [GO:0048471]; plasma membrane [GO:0005886]; voltage-gated potassium channel complex [GO:0008076]...
cell surface [GO:0009986]; integral component of plasma membrane [GO:0005887]; inward rectifier potassium channel complex [GO:1902937]; perinuclear region of cytoplasm [GO:0048471]; plasma membrane [GO:0005886]; voltage-gated potassium channel complex [GO:0008076]
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