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	Identifier	Description	Comments	Source
A	PF02060	Slow voltage-gated potassium channel (ISK_Channel)	Slow voltage-gated potassium channel	-	Family

Gene Product Annotation Gene Product Annotation

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
A	Potassium voltage-gated channel subfamily E member	transporter activity ion channel activity voltage-gated ion channel activity voltage-gated potassium channel activity delayed rectifier potassium channel activity cation channel activity potassium channel activity cation transmembrane transporter activity ion transmembrane transporter activity potassium ion transmembrane transporter activity channel activity inorganic molecular entity transmembrane transporter activity passive transmembrane transporter activity voltage-gated channel activity gated channel activity voltage-gated cation channel activity transmembrane transporter activity inorganic cation transmembrane transporter activity metal ion transmembrane transporter activity binding protein binding transmembrane transporter binding potassium channel regulator activity channel regulator activity molecular function regulator activity ion channel regulator activity cytoskeletal protein binding telethonin binding	response to endogenous stimulus cellular process response to organic substance response to organonitrogen compound response to organic cyclic compound response to purine-containing compound response to chemical response to organophosphorus response to stimulus response to cAMP cellular response to stimulus cellular response to chemical stimulus cellular response to organic substance cellular response to cAMP cellular response to organic cyclic compound cellular response to organonitrogen compound cellular response to endogenous stimulus response to nitrogen compound cellular response to nitrogen compound response to oxygen-containing compound cellular response to oxygen-containing compound regulation of membrane potential biological regulation regulation of biological quality membrane repolarization regulation of biological process regulation of membrane repolarization regulation of ventricular cardiac muscle cell membrane repolarization cardiac muscle cell membrane repolarization regulation of cardiac muscle cell membrane repolarization ventricular cardiac muscle cell membrane repolarization	plasma membrane membrane apical plasma membrane apical part of cell cell periphery plasma membrane region cellular anatomical entity cell surface membrane raft membrane microdomain integral component of plasma membrane voltage-gated potassium channel complex integral component of membrane intrinsic component of membrane intrinsic component of plasma membrane protein-containing complex ion channel complex cation channel complex potassium channel complex membrane protein complex plasma membrane protein complex transmembrane transporter complex transporter complex intracellular anatomical structure cytoplasm myofibril sarcomere Z disc I band organelle non-membrane-bounded organelle intracellular organelle intracellular non-membrane-bounded organelle contractile fiber supramolecular complex supramolecular polymer supramolecular fiber

Membrane Protein Annotation: OPM OPM Database Homepage

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

RCSB PDB is funded by the National Science Foundation (DBI-1832184), 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 R01GM133198.