Annotations: 6BAA

Domain Annotation: ECOD Classification ECOD Database Homepage

Chains	Family Name	Domain Identifier	Architecture	Possible Homology	Homology	Topology	Family	Provenance Source (Version)
A	IRK_C	e6baaA1	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)
A	IRK_N	e6baaA2	A: alpha complex topology	X: Voltage-gated ion channels (From Topology)	H: Voltage-gated ion channels (From Topology)	T: Voltage-gated ion channels	F: IRK_N	ECOD (1.6)
B	IRK_C	e6baaB2	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)
B	IRK_N	e6baaB1	A: alpha complex topology	X: Voltage-gated ion channels (From Topology)	H: Voltage-gated ion channels (From Topology)	T: Voltage-gated ion channels	F: IRK_N	ECOD (1.6)
C	IRK_C	e6baaC2	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)
C	IRK_N	e6baaC1	A: alpha complex topology	X: Voltage-gated ion channels (From Topology)	H: Voltage-gated ion channels (From Topology)	T: Voltage-gated ion channels	F: IRK_N	ECOD (1.6)
D	IRK_C	e6baaD2	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)
D	IRK_N	e6baaD1	A: alpha complex topology	X: Voltage-gated ion channels (From Topology)	H: Voltage-gated ion channels (From Topology)	T: Voltage-gated ion channels	F: IRK_N	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)
A	1.10.287.70	Mainly Alpha	Orthogonal Bundle	Helix Hairpins		CATH (4.3.0)
B	2.60.40.1400	Mainly Beta	Sandwich	Immunoglobulin-like	G protein-activated inward rectifier potassium channel 1	CATH (4.3.0)
B	1.10.287.70	Mainly Alpha	Orthogonal Bundle	Helix Hairpins		CATH (4.3.0)
C	2.60.40.1400	Mainly Beta	Sandwich	Immunoglobulin-like	G protein-activated inward rectifier potassium channel 1	CATH (4.3.0)
C	1.10.287.70	Mainly Alpha	Orthogonal Bundle	Helix Hairpins		CATH (4.3.0)
D	2.60.40.1400	Mainly Beta	Sandwich	Immunoglobulin-like	G protein-activated inward rectifier potassium channel 1	CATH (4.3.0)
D	1.10.287.70	Mainly Alpha	Orthogonal Bundle	Helix Hairpins		CATH (4.3.0)

Protein Family Annotation Pfam Database Homepage

Chains	Accession	Name	Description	Comments	Source
A, B, C, D	PF01007	Inward rectifier potassium channel transmembrane domain (IRK)	Inward rectifier potassium channel transmembrane domain	-	Domain
A, B, C, D	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
E, F, G, H	PF00664	ABC transporter transmembrane region (ABC_membrane)	ABC transporter transmembrane region	-	Family
E, F, G, H	PF00005	ABC transporter (ABC_tran)	ABC transporter	ABC transporters for a large family of proteins responsible for translocation of a variety of compounds across biological membranes. ABC transporters are the largest family of proteins in many completely sequenced bacteria. ABC transporters are comp ...	ABC transporters for a large family of proteins responsible for translocation of a variety of compounds across biological membranes. ABC transporters are the largest family of proteins in many completely sequenced bacteria. ABC transporters are composed of two copies of this domain and two copies of a transmembrane domain Pfam:PF00664. These four domains may belong to a single polypeptide as in Swiss:P13569, or belong in different polypeptide chains.	Domain

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
A, B, C, D	ATP-sensitive inward rectifier potassium channel 11	cytoskeletal protein binding ankyrin binding protein binding binding monoatomic cation transmembrane transporter activity active monoatomic ion transmembrane transporter activity active transmembrane transporter activity primary active transmembrane transporter activity ATPase-coupled transmembrane transporter activity monoatomic ion transmembrane transporter activity transporter activity ATPase-coupled monoatomic cation transmembrane transporter activity transmembrane transporter activity ATP-dependent activity cytoskeletal protein binding ankyrin binding protein binding binding monoatomic cation transmembrane transporter activity active monoatomic ion transmembrane transporter activity active transmembrane transporter activity primary active transmembrane transporter activity ATPase-coupled transmembrane transporter activity monoatomic ion transmembrane transporter activity transporter activity ATPase-coupled monoatomic cation transmembrane transporter activity transmembrane transporter activity ATP-dependent activity heat shock protein binding 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 inorganic molecular entity transmembrane transporter activity channel activity inorganic cation transmembrane transporter activity metal ion transmembrane transporter activity adenyl ribonucleotide binding nucleotide binding purine ribonucleotide binding purine ribonucleoside triphosphate binding nucleoside phosphate binding ion binding purine nucleotide binding organic cyclic compound binding anion binding adenyl nucleotide binding ATP binding heterocyclic compound binding carbohydrate derivative binding ribonucleotide binding small molecule binding voltage-gated monoatomic ion channel activity involved in regulation of presynaptic membrane potential transmembrane transporter binding ligand-gated channel activity ligand-gated monoatomic cation channel activity inward rectifier potassium channel activity ATP-activated inward rectifier potassium channel activity ligand-gated monoatomic ion channel activity	response to stimulus response to chemical response to xenobiotic stimulus transport monoatomic ion transmembrane transport potassium ion transmembrane transport inorganic ion transmembrane transport establishment of localization metal ion transport inorganic cation transmembrane transport transmembrane transport monoatomic cation transmembrane transport localization monoatomic ion transport response to stimulus response to chemical response to xenobiotic stimulus transport monoatomic ion transmembrane transport potassium ion transmembrane transport inorganic ion transmembrane transport establishment of localization metal ion transport inorganic cation transmembrane transport transmembrane transport monoatomic cation transmembrane transport localization monoatomic ion transport potassium ion transport cellular process monoatomic cation transport positive regulation of protein localization to plasma membrane protein localization regulation of localization cellular localization regulation of cellular process regulation of protein localization positive regulation of biological process cellular macromolecule localization regulation of protein localization to membrane positive regulation of cellular process positive regulation of protein localization to cell periphery regulation of biological process protein localization to cell periphery protein localization to plasma membrane biological regulation positive regulation of protein localization to membrane localization within membrane regulation of protein localization to cell periphery protein localization to membrane regulation of cellular localization macromolecule localization positive regulation of protein localization regulation of protein localization to plasma membrane response to stress response to ischemia response to ketone response to lipid response to oxygen-containing compound response to testosterone response to organic cyclic compound cellular response to stimulus cellular response to nutrient levels response to nutrient levels apoptotic process cell death programmed cell death developmental process heart development multicellular organismal process cardiac muscle tissue development animal organ development tissue development striated muscle tissue development circulatory system development multicellular organism development ventricular cardiac muscle tissue development anatomical structure development muscle tissue development system development monosaccharide metabolic process carbohydrate metabolic process hexose metabolic process small molecule metabolic process metabolic process primary metabolic process glucose metabolic process establishment of protein localization nitrogen compound transport cell communication regulation of biological quality regulation of peptide hormone secretion regulation of hormone levels establishment of protein localization to extracellular region protein secretion regulation of protein secretion regulation of secretion regulation of hormone secretion regulation of peptide secretion signaling hormone secretion protein localization to extracellular region peptide secretion secretion by cell regulation of secretion by cell amide transport signal release regulation of signaling secretion regulation of transport regulation of peptide transport regulation of establishment of protein localization cell-cell signaling export from cell regulation of protein transport peptide transport protein transport regulation of insulin secretion peptide hormone secretion hormone transport regulation of cell communication insulin secretion regulation of membrane potential response to decreased oxygen levels response to hypoxia response to oxygen levels response to abiotic stimulus regulation of monoatomic ion transport regulation of monoatomic ion transmembrane transport regulation of transmembrane transport response to stilbenoid response to resveratrol action potential homeostatic process cellular response to glucose stimulus intracellular glucose homeostasis cellular response to oxygen-containing compound response to hexose cellular response to carbohydrate stimulus cellular response to chemical stimulus cellular homeostasis response to monosaccharide response to carbohydrate chemical homeostasis response to glucose glucose homeostasis carbohydrate homeostasis cellular response to hexose stimulus intracellular chemical homeostasis cellular response to monosaccharide stimulus intracellular signal transduction calcium-mediated signaling intracellular signaling cassette signal transduction CAMKK-AMPK signaling cascade system process nervous system process negative regulation of protein transport negative regulation of biological process negative regulation of transport negative regulation of secretion negative regulation of hormone secretion negative regulation of secretion by cell negative regulation of peptide hormone secretion negative regulation of establishment of protein localization negative regulation of protein secretion negative regulation of signaling negative regulation of cell communication negative regulation of peptide secretion negative regulation of cellular process negative regulation of protein localization negative regulation of insulin secretion response to peptide cellular response to tumor necrosis factor response to cytokine cellular response to cytokine stimulus response to tumor necrosis factor determination of adult lifespan cellular response to nicotine response to nicotine response to organophosphorus response to nitrogen compound response to ATP response to purine-containing compound import into cell import across plasma membrane inorganic cation import across plasma membrane inorganic ion import across plasma membrane potassium ion import across plasma membrane response to estradiol	cell periphery cellular anatomical structure sarcolemma plasma membrane membrane T-tubule protein-containing complex plasma membrane protein complex potassium channel complex membrane protein complex cation channel complex transporter complex transmembrane transporter complex inward rectifying potassium channel cell periphery cellular anatomical structure sarcolemma plasma membrane membrane T-tubule protein-containing complex plasma membrane protein complex potassium channel complex membrane protein complex cation channel complex transporter complex transmembrane transporter complex inward rectifying potassium channel monoatomic ion channel complex membrane-bounded organelle intracellular organelle organelle envelope intracellular anatomical structure organelle nuclear envelope nucleus intracellular membrane-bounded organelle endomembrane system presynapse synapse cell junction presynaptic membrane plasma membrane region synaptic membrane cytoplasm glutamatergic synapse axon cell leading edge axolemma neuron projection leading edge membrane plasma membrane bounded cell projection neuron projection membrane cell projection main axon cell projection membrane somatodendritic compartment cell body neuronal cell body cell-cell junction intercalated disc anchoring junction cell-cell contact zone acrosomal vesicle intracellular vesicle cytoplasmic vesicle secretory granule secretory vesicle vesicle cell body fiber endosome
E, F, G, H	ATP-binding cassette sub-family C member 8	binding adenyl ribonucleotide binding nucleotide binding purine ribonucleotide binding purine ribonucleoside triphosphate binding nucleoside phosphate binding ion binding purine nucleotide binding organic cyclic compound binding anion binding adenyl nucleotide binding ATP binding heterocyclic compound binding carbohydrate derivative binding binding adenyl ribonucleotide binding nucleotide binding purine ribonucleotide binding purine ribonucleoside triphosphate binding nucleoside phosphate binding ion binding purine nucleotide binding organic cyclic compound binding anion binding adenyl nucleotide binding ATP binding heterocyclic compound binding carbohydrate derivative binding ribonucleotide binding small molecule binding monoatomic cation transmembrane transporter activity potassium ion transmembrane transporter activity monoatomic ion channel activity potassium channel activity monoatomic cation channel activity passive transmembrane transporter activity inorganic molecular entity transmembrane transporter activity inorganic cation transmembrane transporter activity channel activity monoatomic ion transmembrane transporter activity transporter activity metal ion transmembrane transporter activity transmembrane transporter activity ABC-type transporter activity active transmembrane transporter activity primary active transmembrane transporter activity ATPase-coupled transmembrane transporter activity ATP-dependent activity pyrophosphatase activity ATP hydrolysis activity ribonucleoside triphosphate phosphatase activity hydrolase activity, acting on acid anhydrides, in phosphorus-containing anhydrides hydrolase activity hydrolase activity, acting on acid anhydrides catalytic activity molecular transducer activity sulfonylurea receptor activity transmembrane signaling receptor activity signaling receptor activity	-	cell periphery cellular anatomical structure plasma membrane membrane protein-containing complex

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
A, B, C, D	IPR041647	Inward rectifier potassium channel, C-terminal	Domain
A, B, C, D	IPR040445	Potassium channel, inwardly rectifying, transmembrane domain	Domain
A, B, C, D	IPR016449	Potassium channel, inwardly rectifying, Kir	Family
A, B, C, D	IPR014756	Immunoglobulin E-set	Homologous Superfamily
A, B, C, D	IPR003279	Potassium channel, inwardly rectifying, Kir6.2	Family
A, B, C, D	IPR013518	Potassium channel, inwardly rectifying, Kir, cytoplasmic	Homologous Superfamily
E, F, G, H	IPR017871	ABC transporter-like, conserved site	Conserved Site
E, F, G, H	IPR003439	ABC transporter-like, ATP-binding domain	Domain
E, F, G, H	IPR000388	ATP-binding cassette sub-family C member 8/9	Family
E, F, G, H	IPR036640	ABC transporter type 1, transmembrane domain superfamily	Homologous Superfamily
E, F, G, H	IPR003593	AAA+ ATPase domain	Domain
E, F, G, H	IPR011527	ABC transporter type 1, transmembrane domain	Domain
E, F, G, H	IPR050173	ATP-binding cassette transporter C-like	Family
E, F, G, H	IPR000844	ATP-binding cassette subfamily C member 8	Family
E, F, G, H	IPR027417	P-loop containing nucleoside triphosphate hydrolase	Homologous Superfamily

Membrane Protein Annotation: OPM OPM Database Homepage

Chains	External Link	Type	Class	Superfamily	Family
A, B, C, D, E A, B, C, D, E, F, G, H	OPM	Transmembrane	Alpha-helical polytopic	Ion channel (VIC) superfamily	ATP-sensitive K+ channel

Membrane Protein Annotation: PDBTM PDBTM Database Homepage

Chains	External Link	Comment
A, B, C, D, E A, B, C, D, E, F, G, H	PDBTM	Annotated as membrane protein by PDBTM

Membrane Protein Annotation: MemProtMD MemProtMD Database Homepage

Chains	External Link	Comment
A, B, C, D, E A, B, C, D, E, F, G, H	MemProtMD	Annotated as membrane protein by MemProtMD

Membrane Protein Annotation: mpstruc mpstruc Database Homepage

Chains	Resource Link	Group	Subgroup	Protein
A, B, C, D, E A, B, C, D, E, F, G, H	mpstruc	TRANSMEMBRANE PROTEINS: ALPHA-HELICAL	Channels: Potassium, Sodium, & Proton Ion-Selective	SUR1/Kir6.2 pancreatic ATP-sensitive K⁺ channel

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.