7MIT

Vascular KATP channel: Kir6.1 SUR2B propeller-like conformation 1

External Resource: Annotation

Domain Annotation: ECOD Classification
Protein Family Annotation
Gene Ontology: Gene Product Annotation
InterPro: Protein Family Classification
Membrane Protein Annotation: OPM
Membrane Protein Annotation: PDBTM
Membrane Protein Annotation: MemProtMD
Membrane Protein Annotation: mpstruc

Domain Annotation: ECOD Classification ECOD Database Homepage

Chains	Family Name	Domain Identifier	Architecture	Possible Homology	Homology	Topology	Family	Provenance Source (Version)
B	IRK_C	e7mitB1	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	e7mitB2	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	e7mitC1	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	e7mitC2	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	e7mitD1	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	e7mitD2	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)

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	PF00664	ABC transporter transmembrane region (ABC_membrane)	ABC transporter transmembrane region	-	Family
E	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 8	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 gated channel activity voltage-gated potassium channel activity involved in cardiac muscle cell action potential repolarization monoatomic ion channel activity potassium ion transmembrane transporter activity 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 gated channel activity voltage-gated potassium channel activity involved in cardiac muscle cell action potential repolarization 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 voltage-gated potassium channel activity involved in ventricular cardiac muscle cell action potential repolarization 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 binding adenyl ribonucleotide binding nucleotide binding purine ribonucleotide binding purine ribonucleoside triphosphate binding nucleoside phosphate binding ion binding purine nucleotide 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 sulfonylurea receptor binding protein binding signaling receptor 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 heart process multicellular organismal process system process regulation of biological process regulation of heart contraction regulation of system process biological regulation circulatory system process regulation of blood circulation regulation of multicellular organismal process regulation of biological quality response to stimulus response to chemical response to xenobiotic stimulus heart process multicellular organismal process system process regulation of biological process regulation of heart contraction regulation of system process biological regulation circulatory system process regulation of blood circulation regulation of multicellular organismal process regulation of biological quality heart contraction blood circulation regulation of heart rate developmental process heart development multicellular organism development anatomical structure development animal organ development circulatory system development system development regulation of blood pressure cellular response to stimulus regulation of cellular process signaling p38MAPK cascade intracellular signal transduction cell communication intracellular signaling cassette MAPK cascade cellular process signal transduction 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 monoatomic cation transport immune response immune system process adaptive immune response response to stress response to ischemia cell population proliferation apoptotic process cell death programmed cell death cellular developmental process muscle cell differentiation striated muscle tissue development muscle structure development cell differentiation atrioventricular node development cardiac chamber development muscle tissue development cardiac conduction system development cardiac muscle tissue development atrioventricular node cell differentiation cardiac muscle cell differentiation tissue development cardiocyte differentiation cardiac septum development striated muscle cell differentiation cardiac pacemaker cell differentiation cardiac septum cell differentiation establishment of cell polarity establishment or maintenance of cell polarity ventricular cardiac muscle tissue development nervous system process neuromuscular process heart morphogenesis anatomical structure morphogenesis animal organ morphogenesis calcium ion transport calcium ion transmembrane transport fibroblast proliferation cardiac muscle cell membrane repolarization cardiac muscle cell action potential involved in contraction membrane repolarization membrane repolarization during cardiac muscle cell action potential ventricular cardiac muscle cell membrane repolarization cardiac muscle contraction striated muscle contraction actin filament-based process cardiac muscle cell contraction ventricular cardiac muscle cell action potential action potential actin filament-based movement muscle contraction muscle system process membrane repolarization during action potential membrane repolarization during ventricular cardiac muscle cell action potential cardiac muscle cell action potential actin-mediated cell contraction regulation of membrane potential positive regulation of response to biotic stimulus pattern recognition receptor signaling pathway response to biotic stimulus cellular component biogenesis immune response-activating signaling pathway cellular component assembly inflammasome-mediated signaling pathway positive regulation of immune response canonical inflammasome complex assembly regulation of immune system process positive regulation of immune system process innate immune response-activating signaling pathway response to other organism regulation of innate immune response response to external stimulus regulation of response to stimulus defense response to other organism NLRP3 inflammasome complex assembly positive regulation of defense response activation of innate immune response regulation of immune response inflammatory response activation of immune response cytoplasmic pattern recognition receptor signaling pathway regulation of defense response regulation of response to biotic stimulus biological process involved in interspecies interaction between organisms regulation of response to external stimulus intracellular receptor signaling pathway positive regulation of biological process positive regulation of response to stimulus cellular component organization positive regulation of response to external stimulus immune response-regulating signaling pathway regulation of response to stress innate immune response protein-containing complex assembly response to external biotic stimulus cellular component organization or biogenesis positive regulation of innate immune response defense response protein-containing complex organization defense response to symbiont transmission of nerve impulse fat cell differentiation response to decreased oxygen levels response to hypoxia response to oxygen levels response to abiotic stimulus protein localization establishment of protein localization cellular localization nitrogen compound transport secretion establishment of protein localization to extracellular region export from cell protein secretion protein localization to extracellular region secretion by cell protein transport cellular macromolecule localization macromolecule localization regulation of localization regulation of transport regulation of monoatomic ion transport regulation of monoatomic ion transmembrane transport regulation of transmembrane transport vasculature development blood vessel development defense response to virus response to virus kidney development renal system development cell activation myeloid leukocyte activation leukocyte activation macrophage activation leukocyte activation involved in inflammatory response microglial cell activation glial cell activation neuroinflammatory response reactive gliosis cellular response to stress response to endoplasmic reticulum stress response to oxygen-containing compound response to stilbenoid response to resveratrol response to dsRNA response to nitrogen compound response to exogenous dsRNA calcium-mediated signaling CAMKK-AMPK signaling cascade developmental growth growth nervous system development cell junction organization neuromuscular junction development cell junction assembly synaptic assembly at neuromuscular junction synapse organization synapse assembly response to peptide response to cytokine regulation of tube diameter regulation of tube size vascular process in circulatory system blood vessel diameter maintenance vasodilation regulation of anatomical structure size organic anion transport carboxylic acid transport lipid localization lipid transport organic acid transport monocarboxylic acid transport fatty acid transport determination of adult lifespan biosynthetic process metabolic process macromolecule metabolic process gene expression macromolecule biosynthetic process response to organophosphorus response to ATP response to purine-containing compound response to hormone response to endogenous stimulus response to peptide hormone response to insulin synaptic transmission, glutamatergic L-amino acid transport L-glutamate import synaptic signaling signal release establishment of localization in cell glutamate secretion trans-synaptic signaling neurotransmitter secretion cell-cell signaling neurotransmitter transport chemical synaptic transmission amino acid transport acidic amino acid transport signal release from synapse glutamate secretion, neurotransmission anterograde trans-synaptic signaling dicarboxylic acid transport 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 coronary vasculature development response to lipid response to lipopolysaccharide response to bacterium response to molecule of bacterial origin	protein-containing complex plasma membrane protein complex membrane plasma membrane potassium channel complex membrane protein complex cation channel complex transporter complex cell periphery cellular anatomical structure transmembrane transporter complex inward rectifying potassium channel monoatomic ion channel complex sarcolemma protein-containing complex plasma membrane protein complex membrane plasma membrane potassium channel complex membrane protein complex cation channel complex transporter complex cell periphery cellular anatomical structure transmembrane transporter complex inward rectifying potassium channel monoatomic ion channel complex sarcolemma synapse cell junction glutamatergic synapse presynapse presynaptic active zone membrane presynaptic membrane synaptic membrane plasma membrane region presynaptic active zone intracellular anatomical structure intracellular membraneless organelle intracellular organelle organelle membraneless organelle contractile muscle fiber cytoplasm supramolecular fiber myofibril supramolecular polymer supramolecular complex
E	Isoform SUR2B of ATP-binding cassette sub-family C member 9	protein binding binding SNARE binding syntaxin binding ABC-type transporter activity active transmembrane transporter activity primary active transmembrane transporter activity ATPase-coupled transmembrane transporter activity transporter activity transmembrane transporter activity ATP-dependent activity monoatomic cation transmembrane transporter activity active monoatomic ion transmembrane transporter activity monoatomic ion transmembrane transporter activity protein binding binding SNARE binding syntaxin binding ABC-type transporter activity active transmembrane transporter activity primary active transmembrane transporter activity ATPase-coupled transmembrane transporter activity transporter activity transmembrane transporter activity ATP-dependent activity monoatomic cation transmembrane transporter activity active monoatomic ion transmembrane transporter activity monoatomic ion transmembrane transporter activity ATPase-coupled monoatomic cation transmembrane transporter activity adenyl ribonucleotide binding nucleotide binding purine ribonucleotide binding purine ribonucleoside triphosphate binding nucleoside phosphate binding ion binding purine nucleotide binding anion binding adenyl nucleotide binding ATP binding heterocyclic compound binding carbohydrate derivative binding ribonucleotide binding small molecule binding protein-containing complex binding potassium channel regulator activity transporter activator activity channel regulator activity potassium channel activator activity molecular function activator activity ion channel regulator activity molecular function regulator activity channel activator activity transporter regulator activity identical protein binding 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 metal ion transmembrane transporter activity molecular transducer activity sulfonylurea receptor activity transmembrane signaling receptor activity signaling receptor activity transmembrane transporter binding 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	response to stimulus response to chemical response to xenobiotic stimulus developmental process heart development multicellular organism development multicellular organismal process anatomical structure development animal organ development circulatory system development system development system process circulatory system process regulation of blood pressure response to stimulus response to chemical response to xenobiotic stimulus developmental process heart development multicellular organism development multicellular organismal process anatomical structure development animal organ development circulatory system development system development system process circulatory system process regulation of blood pressure biological regulation regulation of biological quality blood circulation response to peptide 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 response to decreased oxygen levels response to oxygen levels response to abiotic stimulus cellular response to stimulus cellular response to metal ion cellular response to chemical stimulus response to metal ion response to potassium ion cellular response to potassium ion vascular process in circulatory system cellular response to calcium ion response to calcium ion heart morphogenesis anatomical structure morphogenesis animal organ morphogenesis regulation of biological process regulation of cellular process signaling intracellular signal transduction cell communication intracellular signaling cassette MAPK cascade signal transduction substrate-dependent cell migration ameboidal-type cell migration actin filament-based process cell migration cytoplasmic actin-based contraction involved in cell motility cell motility actin-mediated cell contraction actin filament-based movement substrate-dependent cell migration, cell contraction fibroblast proliferation cell population proliferation heart process regulation of heart contraction regulation of system process regulation of blood circulation cardiac conduction regulation of multicellular organismal process heart contraction regulation of membrane potential response to hypoxia response to stress cellular response to nitrogen compound cellular response to ATP response to organophosphorus response to oxygen-containing compound response to nitrogen compound response to ATP response to purine-containing compound cellular response to oxygen-containing compound cellular response to xenobiotic stimulus vasculature development blood vessel development response to hydrogen peroxide response to oxidative stress response to reactive oxygen species biological process involved in interspecies interaction between organisms response to other organism defense response response to external stimulus response to biotic stimulus defense response to virus defense response to other organism response to external biotic stimulus response to virus response to hydrogen sulfide reactive oxygen species biosynthetic process biosynthetic process reactive oxygen species metabolic process metabolic process nucleoside phosphate metabolic process ribose phosphate metabolic process purine nucleoside triphosphate metabolic process ATP metabolic process carbohydrate derivative metabolic process primary metabolic process nucleotide metabolic process purine-containing compound metabolic process nucleobase-containing compound metabolic process purine nucleotide metabolic process ribonucleotide metabolic process organophosphate metabolic process nucleobase-containing small molecule metabolic process purine ribonucleoside triphosphate metabolic process phosphate-containing compound metabolic process small molecule metabolic process nucleoside triphosphate metabolic process purine ribonucleotide metabolic process phosphorus metabolic process ribonucleoside triphosphate metabolic process response to hormone response to endogenous stimulus response to estrogen negative regulation of programmed cell death regulation of apoptotic process negative regulation of biological process regulation of programmed cell death cell death negative regulation of apoptotic process negative regulation of cellular process apoptotic process programmed cell death action potential response to activity muscle structure development skeletal muscle organ development skeletal muscle tissue development muscle tissue development muscle organ development tissue development striated muscle tissue development regulation of tube diameter regulation of tube size blood vessel diameter maintenance vasodilation regulation of anatomical structure size macromolecule metabolic process gene expression macromolecule biosynthetic process fatty acid metabolic process oxoacid metabolic process carboxylic acid metabolic process lipid modification organic acid metabolic process fatty acid oxidation lipid oxidation monocarboxylic acid metabolic process lipid metabolic process cardiac muscle cell contraction cardiac muscle contraction muscle contraction muscle system process striated muscle contraction RNA metabolic process regulation of primary metabolic process RNA biosynthetic process nucleic acid biosynthetic process DNA-templated transcription regulation of RNA metabolic process transcription by RNA polymerase II regulation of nucleobase-containing compound metabolic process regulation of RNA biosynthetic process regulation of transcription by RNA polymerase II regulation of biosynthetic process regulation of macromolecule metabolic process nucleobase-containing compound biosynthetic process nucleic acid metabolic process regulation of gene expression regulation of macromolecule biosynthetic process regulation of DNA-templated transcription regulation of metabolic process 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 regulation of localization regulation of potassium ion transport regulation of monoatomic ion transmembrane transport regulation of metal ion transport regulation of transport regulation of monoatomic ion transport regulation of potassium ion transmembrane transport regulation of transmembrane transport regulation of monoatomic cation transmembrane transport cellular response to stress cellular response to chemical stress cellular component organization organelle organization cellular component organization or biogenesis mitochondrion organization coronary vasculature development cellular respiration energy derivation by oxidation of organic compounds generation of precursor metabolites and energy negative regulation of blood pressure oxygen metabolic process	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 intracellular anatomical structure cytoplasm intracellular membraneless organelle sarcomere intracellular organelle organelle membraneless organelle contractile muscle fiber supramolecular fiber myofibril supramolecular polymer supramolecular complex acrosomal vesicle membrane-bounded organelle intracellular vesicle intracellular membrane-bounded organelle endomembrane system cytoplasmic vesicle secretory granule secretory vesicle vesicle mitochondrion

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	IPR013518	Potassium channel, inwardly rectifying, Kir, cytoplasmic	Homologous Superfamily
A, B, C, D	IPR003278	Potassium channel, inwardly rectifying, Kir6.1	Family
E	IPR003439	ABC transporter-like, ATP-binding domain	Domain
E	IPR047080	ATP-binding cassette sub-family C member 9, ATP-binding cassette domain 1	Domain
E	IPR027417	P-loop containing nucleoside triphosphate hydrolase	Homologous Superfamily
E	IPR000388	ATP-binding cassette sub-family C member 8/9	Family
E	IPR001475	ATP-binding cassette subfamily C member 9	Family
E	IPR003593	AAA+ ATPase domain	Domain
E	IPR011527	ABC transporter type 1, transmembrane domain	Domain
E	IPR017871	ABC transporter-like, conserved site	Conserved Site
E	IPR036640	ABC transporter type 1, transmembrane domain superfamily	Homologous Superfamily
E	IPR050173	ATP-binding cassette transporter C-like	Family

Membrane Protein Annotation: OPM OPM Database Homepage

Chains	External Link	Type	Class	Superfamily	Family
A, B, C, D, E	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	PDBTM	Annotated as membrane protein by PDBTM

Membrane Protein Annotation: MemProtMD MemProtMD Database Homepage

Chains	External Link	Comment
A, B, C, D, E	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	mpstruc	TRANSMEMBRANE PROTEINS: ALPHA-HELICAL	Channels: Potassium, Sodium, & Proton Ion-Selective	SUR2B/Kir6.1 ATP-sensitive K⁺ channel with bound ATP and glibenclamide, propeller-like conformation 1

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.