2NDJ | pdb_00002ndj

Structural Basis for KCNE3 and Estrogen Modulation of the KCNQ1 Channel

External Resource: Annotation

Domain Annotation: ECOD Classification
Protein Family Annotation
Gene Ontology: Gene Product Annotation
InterPro: Protein Family Classification
Pharos: Disease Associations
Membrane Protein Annotation: OPM
Membrane Protein Annotation: PDBTM
Membrane Protein Annotation: MemProtMD

Domain Annotation: ECOD Classification ECOD Database Homepage

Chains	Family Name	Domain Identifier	Architecture	Possible Homology	Homology	Topology	Family	Provenance Source (Version)
A	ISK_Channel	e2ndjA1	A: a/b three-layered sandwiches	X: Flagellar hook protein flgE D2 domain-like	H: Flagellar hook protein flgE D2 domain	T: Flagellar hook protein flgE D2 domain	F: ISK_Channel	ECOD (v294.1)

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 3	monoatomic cation transmembrane transporter 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 monoatomic cation transmembrane transporter 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 potassium channel regulator activity channel regulator activity ion channel regulator activity molecular function regulator activity transporter regulator activity	inorganic ion homeostasis homeostatic process intracellular monoatomic anion homeostasis intracellular chloride ion homeostasis monoatomic anion homeostasis cellular homeostasis chemical homeostasis monoatomic ion homeostasis intracellular chemical homeostasis chloride ion homeostasis intracellular monoatomic ion homeostasis cardiac muscle cell membrane repolarization heart process multicellular organismal process inorganic ion homeostasis homeostatic process intracellular monoatomic anion homeostasis intracellular chloride ion homeostasis monoatomic anion homeostasis cellular homeostasis chemical homeostasis monoatomic ion homeostasis intracellular chemical homeostasis chloride ion homeostasis intracellular monoatomic ion homeostasis cardiac muscle cell membrane repolarization heart process multicellular organismal process system process negative regulation of membrane repolarization during ventricular cardiac muscle cell action potential cardiac muscle cell action potential involved in contraction regulation of membrane repolarization during action potential membrane repolarization membrane repolarization during cardiac muscle cell action potential ventricular cardiac muscle cell membrane repolarization negative regulation of biological process cardiac muscle contraction striated muscle contraction negative regulation of membrane repolarization during cardiac muscle cell action potential regulation of membrane repolarization during ventricular cardiac muscle cell action potential circulatory system process regulation of membrane repolarization during cardiac muscle cell action potential actin filament-based process regulation of biological quality blood circulation regulation of action potential cardiac muscle cell contraction regulation of biological process biological regulation regulation of cardiac muscle cell membrane repolarization ventricular cardiac muscle cell action potential action potential actin filament-based movement muscle contraction muscle system process membrane repolarization during action potential regulation of membrane repolarization cellular process membrane repolarization during ventricular cardiac muscle cell action potential cardiac muscle cell action potential actin-mediated cell contraction heart contraction regulation of ventricular cardiac muscle cell membrane repolarization regulation of membrane potential transport monoatomic ion transmembrane transport potassium ion transmembrane transport export from cell export across plasma membrane potassium ion export across plasma membrane establishment of localization metal ion transport monoatomic cation transmembrane transport transmembrane transport localization monoatomic ion transport potassium ion transport monoatomic cation transport regulation of localization regulation of potassium ion transport regulation of cellular process 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 cellular process 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 sodium ion transport negative regulation of potassium ion export across plasma membrane regulation of potassium ion export across plasma membrane 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	somatodendritic compartment cell body cellular anatomical structure perikaryon neuronal cell body basal part of cell basolateral part of cell lateral part of cell membrane-bounded organelle organelle vesicle cell periphery plasma membrane membrane somatodendritic compartment cell body cellular anatomical structure perikaryon neuronal cell body basal part of cell basolateral part of cell lateral part of cell membrane-bounded organelle organelle vesicle cell periphery plasma membrane membrane membrane microdomain membrane raft cell projection dendrite dendritic tree neuron projection plasma membrane bounded cell projection intracellular anatomical structure cytoplasm 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 neuronal cell body membrane cell body membrane

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
A	IPR005426	Potassium channel, voltage-dependent, beta subunit, KCNE3	Family
A	IPR000369	Potassium channel, voltage-dependent, beta subunit, KCNE	Family

Pharos: Disease Associations Pharos Homepage Annotation

Chains	Drug Target	Associated Disease
A	Pharos: Q9Y6H6	Brugada syndrome Brugada syndrome 6 hyperkalemic periodic paralysis hypokalemic periodic paralysis ulcerative colitis adrenal cortex carcinoma Crohn disease nasopharyngeal carcinoma ovarian cancer pancreatic intraductal papillary-mucinous neoplasm subependymal giant cell astrocytoma cystic fibrosis oligodendroglioma pancreatic ductal adenocarcinoma pancreatic intraductal papillary-mucinous neoplasm with low grade dysplasia Brugada syndrome Brugada syndrome 6 hyperkalemic periodic paralysis hypokalemic periodic paralysis ulcerative colitis adrenal cortex carcinoma Crohn disease nasopharyngeal carcinoma ovarian cancer pancreatic intraductal papillary-mucinous neoplasm subependymal giant cell astrocytoma cystic fibrosis oligodendroglioma pancreatic ductal adenocarcinoma pancreatic intraductal papillary-mucinous neoplasm with low grade dysplasia tuberculosis Familial Ménière disease malignant pancreatic neoplasm osteosarcoma pancreatic intraductal papillary-mucinous carcinoma pilocytic astrocytoma

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)

Membrane Protein Annotation: PDBTM PDBTM Database Homepage

Chains	External Link	Comment
A	PDBTM	Annotated as membrane protein by PDBTM

Membrane Protein Annotation: MemProtMD MemProtMD Database Homepage

Chains	External Link	Comment
A	MemProtMD	Annotated as membrane protein by MemProtMD

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. RCSB PDB uses resources of the National Energy Research Scientific Computing Center (NERSC), a Department of Energy User Facility.

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