Annotations: 2K21

Domain Annotation: ECOD Classification ECOD Database Homepage

Chains	Family Name	Domain Identifier	Architecture	Possible Homology	Homology	Topology	Family	Provenance Source (Version)
A	ISK_Channel	e2k21A1	A: alpha complex topology	X: Potassium channel modulator KCNE1 (From Topology)	H: Potassium channel modulator KCNE1 (From Topology)	T: Potassium channel modulator KCNE1	F: ISK_Channel	ECOD (1.6)

Protein Family Annotation Pfam Database Homepage

Chains	Accession	Name	Description	Comments	Source
A	PF02060	Slow voltage-gated potassium channel (ISK_Channel)	Slow voltage-gated potassium channel	-	Family

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
A	Potassium voltage-gated channel subfamily E member	monoatomic cation transmembrane transporter activity delayed rectifier potassium channel activity gated channel activity monoatomic ion channel activity potassium ion transmembrane transporter activity voltage-gated channel activity voltage-gated monoatomic ion channel activity potassium channel activity voltage-gated monoatomic cation channel activity monoatomic cation channel activity passive transmembrane transporter activity voltage-gated potassium channel activity channel activity monoatomic ion transmembrane transporter activity transporter activity monoatomic cation transmembrane transporter activity delayed rectifier potassium channel activity gated channel activity monoatomic ion channel activity potassium ion transmembrane transporter activity voltage-gated channel activity voltage-gated monoatomic ion channel activity potassium channel activity voltage-gated monoatomic cation channel activity monoatomic cation channel activity passive transmembrane transporter activity voltage-gated potassium channel activity channel activity monoatomic ion transmembrane transporter activity transporter activity metal ion transmembrane transporter activity transmembrane transporter activity protein binding binding transmembrane transporter binding cytoskeletal protein binding telethonin binding potassium channel regulator activity channel regulator activity ion channel regulator activity molecular function regulator activity transporter regulator activity	regulation of localization cellular localization establishment of protein localization regulation of cellular process regulation of protein localization protein targeting negative regulation of biological process localization regulation of protein targeting to membrane negative regulation of cellular process intracellular protein localization regulation of biological process establishment of protein localization to membrane biological regulation regulation of localization cellular localization establishment of protein localization regulation of cellular process regulation of protein localization protein targeting negative regulation of biological process localization regulation of protein targeting to membrane negative regulation of cellular process intracellular protein localization regulation of biological process establishment of protein localization to membrane biological regulation regulation of establishment of protein localization negative regulation of protein targeting to membrane negative regulation of establishment of protein localization localization within membrane establishment of localization protein targeting to membrane regulation of cellular localization regulation of protein targeting macromolecule localization cellular process heart process cardiac muscle cell contraction multicellular organismal process system process cardiac muscle cell action potential involved in contraction action potential actin filament-based movement cardiac muscle contraction muscle contraction muscle system process striated muscle contraction circulatory system process actin filament-based process regulation of biological quality actin-mediated cell contraction heart contraction cardiac muscle cell action potential blood circulation regulation of membrane potential transport monoatomic ion transmembrane transport potassium ion transmembrane transport metal ion transport monoatomic cation transmembrane transport transmembrane transport monoatomic ion transport potassium ion transport monoatomic cation transport membrane repolarization cardiac muscle cell membrane repolarization regulation of membrane repolarization ventricular cardiac muscle cell membrane repolarization regulation of cardiac muscle cell membrane repolarization regulation of ventricular cardiac muscle cell membrane repolarization cellular response to nitrogen compound cellular response to stimulus response to stimulus response to organophosphorus response to oxygen-containing compound response to nitrogen compound response to purine-containing compound response to cAMP cellular response to oxygen-containing compound cellular response to chemical stimulus response to chemical cellular response to cAMP export from cell export across plasma membrane potassium ion export across plasma membrane membrane repolarization during action potential regulation of potassium ion transport negative regulation of ion transmembrane transporter activity negative regulation of potassium ion transmembrane transporter activity negative regulation of monoatomic ion transport regulation of transmembrane transporter activity negative regulation of transport regulation of delayed rectifier potassium channel activity regulation of monoatomic ion transmembrane transport negative regulation of transmembrane transport negative regulation of monoatomic ion transmembrane transport negative regulation of delayed rectifier potassium channel activity negative regulation of voltage-gated potassium channel activity negative regulation of cation transmembrane transport regulation of metal ion transport negative regulation of potassium ion transport regulation of transport regulation of monoatomic ion transport negative regulation of transporter activity negative regulation of molecular function negative regulation of potassium ion transmembrane transport regulation of potassium ion transmembrane transport regulation of molecular function regulation of transmembrane transport regulation of monoatomic cation transmembrane transport developmental process head development pons development animal organ development brain development nervous system development multicellular organism development medulla oblongata development central nervous system development metencephalon development vestibular nucleus development anatomical structure development hindbrain development neural nucleus development system development membrane repolarization during cardiac muscle cell action potential ventricular cardiac muscle cell action potential membrane repolarization during ventricular cardiac muscle cell action potential sensory perception nervous system process sensory perception of sound sensory perception of mechanical stimulus positive regulation of cation transmembrane transport positive regulation of biological process positive regulation of monoatomic ion transport positive regulation of transmembrane transport positive regulation of monoatomic ion transmembrane transport positive regulation of cellular process positive regulation of potassium ion transport positive regulation of transport positive regulation of potassium ion transmembrane transport epithelium development cellular developmental process cell development developmental maturation tissue development epithelial cell differentiation epithelial cell development anatomical structure maturation cell differentiation epithelial cell maturation cell maturation regulation of heart contraction regulation of system process regulation of blood circulation cardiac conduction regulation of multicellular organismal process regulation of heart rate by cardiac conduction regulation of heart rate vesicle organization cellular component organization organelle organization secretory granule organization cellular component organization or biogenesis endomembrane system organization	intracellular anatomical structure intracellular membraneless organelle Z disc sarcomere intracellular organelle I band cellular anatomical structure organelle membraneless organelle contractile muscle fiber cytoplasm supramolecular fiber myofibril supramolecular polymer intracellular anatomical structure intracellular membraneless organelle Z disc sarcomere intracellular organelle I band cellular anatomical structure organelle membraneless organelle contractile muscle fiber cytoplasm supramolecular fiber myofibril supramolecular polymer supramolecular complex cell periphery apical part of cell membrane plasma membrane plasma membrane region apical plasma membrane cell surface membrane microdomain membrane raft membrane-bounded organelle lytic vacuole vacuole intracellular membrane-bounded organelle lysosome voltage-gated potassium channel complex protein-containing complex plasma membrane protein complex potassium channel complex membrane protein complex cation channel complex transporter complex transmembrane transporter complex monoatomic ion channel complex

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
A	IPR005424	Potassium voltage-gated channel subfamily E member 1	Family
A	IPR000369	Potassium channel, voltage-dependent, beta subunit, KCNE	Family

Pharos: Disease Associations Pharos Homepage Annotation

Chains	Drug Target	Associated Disease
A	Pharos: P15382	Jervell and Lange-Nielsen syndrome long QT syndrome long QT syndrome 5 Jervell and Lange-Nielsen syndrome 2 Acoustic Trauma Down syndrome heart disease noise induced hearing loss atrial fibrillation, familial, 1 familial long QT syndrome intellectual disability cardiomyopathy

Membrane Protein Annotation: OPM OPM Database Homepage

Chains	External Link	Type	Class	Superfamily	Family
A	OPM	Transmembrane	Bitopic proteins	Voltage-gated K+ channel accessory protein (MinK)	Voltage-gated K+ channel accessory protein (MinK)

RCSB PDB Core Operations are funded by the U.S. National Science Foundation (DBI-2321666), the US Department of Energy (DE-SC0019749), and the National Cancer Institute, National Institute of Allergy and Infectious Diseases, and National Institute of General Medical Sciences of the National Institutes of Health under grant R01GM157729.