Annotations: 8HKQ

Protein Family Annotation Pfam Database Homepage

Chains	Accession	Name	Description	Comments	Source
A [auth D], B [auth A], C, D [auth B]	PF03493	Calcium-activated BK potassium channel alpha subunit (BK_channel_a)	Calcium-activated BK potassium channel alpha subunit	-	Family
A [auth D], B [auth A], C, D [auth B]	PF07885	Ion channel (Ion_trans_2)	Ion channel	-	Family

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
A [auth D], B [auth A], C, D [auth B]	Potassium channel subfamily T member 1	monoatomic cation transmembrane transporter activity gated channel activity monoatomic ion channel activity potassium ion transmembrane transporter activity potassium channel activity monoatomic ion-gated channel activity ligand-gated channel activity intracellular sodium-activated potassium channel activity ligand-gated monoatomic ion channel activity monoatomic cation channel activity passive transmembrane transporter activity inorganic molecular entity transmembrane transporter activity channel activity inorganic cation transmembrane transporter activity monoatomic ion transmembrane transporter activity monoatomic cation transmembrane transporter activity gated channel activity monoatomic ion channel activity potassium ion transmembrane transporter activity potassium channel activity monoatomic ion-gated channel activity ligand-gated channel activity intracellular sodium-activated potassium channel activity ligand-gated monoatomic ion channel activity monoatomic cation channel activity passive transmembrane transporter activity inorganic molecular entity transmembrane transporter activity channel activity inorganic cation transmembrane transporter activity monoatomic ion transmembrane transporter activity transporter activity ligand-gated monoatomic cation channel activity metal ion transmembrane transporter activity transmembrane transporter activity outward rectifier potassium channel activity voltage-gated channel activity voltage-gated monoatomic ion channel activity voltage-gated monoatomic cation channel activity voltage-gated potassium channel activity	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	cell periphery plasma membrane membrane cellular anatomical entity

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
A [auth D], B [auth A], C, D [auth B]	IPR013099	Potassium channel domain	Domain
A [auth D], B [auth A], C, D [auth B]	IPR047871	Calcium-activated potassium channel slowpoke-like	Family
A [auth D], B [auth A], C, D [auth B]	IPR003929	Calcium-activated potassium channel BK, alpha subunit	Domain

Pharos: Disease Associations Pharos Homepage Annotation

Chains	Drug Target	Associated Disease
A [auth D], B [auth A], C, D [auth B]	Pharos: Q5JUK3	developmental and epileptic encephalopathy, 14 autosomal dominant nocturnal frontal lobe epilepsy 5 frontal lobe epilepsy autosomal dominant nocturnal frontal lobe epilepsy partial epilepsy epilepsy Epilepsy, Supplementary Motor intellectual disability periodontitis benign occipital epilepsy schizophrenia bipolar disorder developmental disability

Membrane Protein Annotation: MemProtMD MemProtMD Database Homepage

Chains	External Link	Comment
A [auth D], B [auth A], C, D [auth B]	MemProtMD	Annotated as membrane protein by MemProtMD

Membrane Protein Annotation: mpstruc mpstruc Database Homepage

Chains	Resource Link	Group	Subgroup	Protein
A [auth D], B [auth A], C, D [auth B]	mpstruc	TRANSMEMBRANE PROTEINS: ALPHA-HELICAL	Channels: Potassium, Sodium, & Proton Ion-Selective	Slo2.2 Na⁺-activated K⁺ channel, open conformation

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 R01GM133198.