3ATA

Crystal Structure of the Kir3.2 Cytoplasmic Domain (Na+-free crystal soaked in 10 mM barium chloride and 10 mM Spermine)

External Resource: Annotation

Domain Annotation: SCOP2 Classification
Domain Annotation: ECOD Classification
Domain Annotation: CATH
Protein Family Annotation
Gene Ontology: Gene Product Annotation
InterPro: Protein Family Classification

Domain Annotation: SCOP2 Classification SCOP2 Database Homepage

Chains	Type	Family Name	Domain Identifier	Family Identifier	Provenance Source (Version)
A	SCOP2B Superfamily	E set domains	8082855	3000070	SCOP2B (2022-06-29)

Domain Annotation: ECOD Classification ECOD Database Homepage

Chains	Family Name	Domain Identifier	Architecture	Possible Homology	Homology	Topology	Family	Provenance Source (Version)
A	IRK_C	e3ataA1	A: beta sandwiches	X: Immunoglobulin-like beta-sandwich	H: Immunoglobulin-related	T: Immunoglobulin/Fibronectin type III/E set domains/PapD-like	F: IRK_C	ECOD (1.6)

Domain Annotation: CATH CATH Database Homepage

Chain	Domain	Class	Architecture	Topology	Homology	Provenance Source (Version)
A	2.60.40.1400	Mainly Beta	Sandwich	Immunoglobulin-like	G protein-activated inward rectifier potassium channel 1	CATH (4.3.0)

Protein Family Annotation Pfam Database Homepage

Chains	Accession	Name	Description	Comments	Source
A	PF17655	Inward rectifier potassium channel C-terminal domain (IRK_C)	Inward rectifier potassium channel C-terminal domain	This cytoplasmic C-terminal domain has an Ig fold.	Domain

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
A	Potassium inwardly-rectifying channel, subfamily J, member 6	passive transmembrane transporter activity gated channel activity monoatomic ion channel activity voltage-gated monoatomic ion channel activity involved in regulation of presynaptic membrane potential channel activity voltage-gated channel activity voltage-gated monoatomic ion channel activity monoatomic ion transmembrane transporter activity transporter activity transmembrane transporter activity monoatomic cation transmembrane transporter activity potassium ion transmembrane transporter activity potassium channel activity monoatomic cation channel activity passive transmembrane transporter activity gated channel activity monoatomic ion channel activity voltage-gated monoatomic ion channel activity involved in regulation of presynaptic membrane potential channel activity voltage-gated channel activity voltage-gated monoatomic ion channel activity monoatomic ion transmembrane transporter activity transporter activity transmembrane transporter activity monoatomic cation transmembrane transporter activity potassium ion transmembrane transporter activity potassium channel activity monoatomic cation channel activity inorganic molecular entity transmembrane transporter activity inorganic cation transmembrane transporter activity metal ion transmembrane transporter activity protein binding binding G-protein alpha-subunit binding ligand-gated channel activity ligand-gated monoatomic cation channel activity inward rectifier potassium channel activity voltage-gated monoatomic cation channel activity ligand-gated monoatomic ion channel activity voltage-gated potassium channel activity G-protein activated inward rectifier potassium channel activity	regulation of localization regulation of biological process regulation of cellular process transport regulation of transport monoatomic ion transmembrane transport regulation of monoatomic ion transport biological regulation regulation of monoatomic ion transmembrane transport establishment of localization transmembrane transport localization regulation of transmembrane transport monoatomic ion transport regulation of localization regulation of biological process regulation of cellular process transport regulation of transport monoatomic ion transmembrane transport regulation of monoatomic ion transport biological regulation regulation of monoatomic ion transmembrane transport establishment of localization transmembrane transport localization regulation of transmembrane transport monoatomic ion transport cellular process import into cell import across plasma membrane potassium ion transmembrane transport inorganic ion transmembrane transport inorganic cation import across plasma membrane metal ion transport inorganic cation transmembrane transport monoatomic cation transmembrane transport inorganic ion import across plasma membrane potassium ion transport potassium ion import across plasma membrane monoatomic cation transport protein localization negative regulation of protein transport establishment of protein localization nitrogen compound transport negative regulation of biological process negative regulation of transport cell communication negative regulation of secretion cellular macromolecule localization negative regulation of hormone secretion negative regulation of secretion by cell regulation of biological quality regulation of peptide hormone secretion negative regulation of peptide hormone secretion regulation of hormone levels establishment of protein localization to extracellular region negative regulation of establishment of protein localization protein secretion regulation of protein secretion regulation of secretion negative regulation of protein secretion cellular localization regulation of hormone secretion regulation of protein localization regulation of peptide secretion signaling negative regulation of signaling hormone secretion negative regulation of cell communication protein localization to extracellular region negative regulation of peptide secretion peptide secretion secretion by cell regulation of secretion by cell amide transport signal release negative regulation of cellular process negative regulation of protein localization regulation of signaling secretion regulation of peptide transport regulation of establishment of protein localization cell-cell signaling export from cell regulation of protein transport peptide transport negative regulation of insulin secretion protein transport regulation of cellular localization regulation of insulin secretion peptide hormone secretion macromolecule localization hormone transport regulation of cell communication insulin secretion	cell surface cellular anatomical entity parallel fiber to Purkinje cell synapse synapse cell junction excitatory synapse cell periphery plasma membrane membrane presynapse presynaptic membrane plasma membrane region synaptic membrane somatodendritic compartment cell surface cellular anatomical entity parallel fiber to Purkinje cell synapse synapse cell junction excitatory synapse cell periphery plasma membrane membrane presynapse presynaptic membrane plasma membrane region synaptic membrane somatodendritic compartment neuronal cell body membrane cell body cell body membrane neuronal cell body axon cell projection neuron projection plasma membrane bounded cell projection dendrite dendritic tree postsynapse protein-containing complex transmembrane transporter complex membrane protein complex transporter complex monoatomic ion channel complex

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
A	IPR041647	Inward rectifier potassium channel, C-terminal	Domain
A	IPR040445	Potassium channel, inwardly rectifying, transmembrane domain	Domain
A	IPR016449	Potassium channel, inwardly rectifying, Kir	Family
A	IPR014756	Immunoglobulin E-set	Homologous Superfamily
A	IPR003275	Potassium channel, inwardly rectifying, Kir3.2	Family
A	IPR013518	Potassium channel, inwardly rectifying, Kir, cytoplasmic	Homologous Superfamily

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.