Annotations: 5A6E

Domain Annotation: ECOD Classification ECOD Database Homepage

Chains	Family Name	Domain Identifier	Architecture	Possible Homology	Homology	Topology	Family	Provenance Source (Version)
B	Ion_trans_2	e5a6eB1	A: alpha complex topology	X: Voltage-gated ion channels (From Topology)	H: Voltage-gated ion channels (From Topology)	T: Voltage-gated ion channels	F: Ion_trans_2	ECOD (1.6)
C	BK_channel_a	e5a6eC1	A: a+b two layers	X: TrkA C-terminal domain-like (From Topology)	H: TrkA C-terminal domain-like (From Topology)	T: TrkA C-terminal domain-like	F: BK_channel_a	ECOD (1.6)
C	KOG1420	e5a6eC4	A: a+b two layers	X: TrkA C-terminal domain-like (From Topology)	H: TrkA C-terminal domain-like (From Topology)	T: TrkA C-terminal domain-like	F: KOG1420	ECOD (1.6)
C	TrkA_N_1	e5a6eC2	A: a/b three-layered sandwiches	X: Rossmann-like	H: Rossmann-related	T: NAD(P)-binding Rossmann-fold domains	F: TrkA_N_1	ECOD (1.6)

Protein Family Annotation Pfam Database Homepage

Chains	Accession	Name	Description	Comments	Source
B	PF07885	Ion channel (Ion_trans_2)	Ion channel	-	Family
C	PF03493	Calcium-activated BK potassium channel alpha subunit (BK_channel_a)	Calcium-activated BK potassium channel alpha subunit	-	Family
C	PF22614	Calcium-activated potassium channel slowpoke-like RCK domain (Slo-like_RCK)	Calcium-activated potassium channel slowpoke-like RCK domain	This entry includes calcium-activated potassium channels, known as BK channels or Slowpoke homologues (Slo1-3) which includes calcium-activated potassium channel slowpoke from Drosophila (Slo) and its homologues from vertebrates KCMA1, KCNT1/2 and KC ...	This entry includes calcium-activated potassium channels, known as BK channels or Slowpoke homologues (Slo1-3) which includes calcium-activated potassium channel slowpoke from Drosophila (Slo) and its homologues from vertebrates KCMA1, KCNT1/2 and KCNU1. This entry represents the C-terminal regulator of K+ conductance (RCK) domains which appear as tandem domains in these proteins [1-5]. The RCK domain has a Rossmann-fold topology with unique positions that compose a well-conserved salt bridge and a hydrophobic dimer interface. This domain is also presents in prokaryotic K+ channels.	Domain

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
B	PORE DOMAIN OF 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	protein-containing complex organization protein homotetramerization cellular component organization cellular component biogenesis cellular component assembly protein complex oligomerization protein tetramerization protein-containing complex assembly protein homooligomerization cellular process cellular component organization or biogenesis transport monoatomic ion transmembrane transport potassium ion transmembrane transport protein-containing complex organization protein homotetramerization cellular component organization cellular component biogenesis cellular component assembly protein complex oligomerization protein tetramerization protein-containing complex assembly protein homooligomerization cellular process cellular component organization or biogenesis 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	cell periphery cellular anatomical structure plasma membrane membrane
D	RCK2 ELABORATION OF POTASSIUM CHANNEL SUBFAMILY T MEMBER 1	-	-	-
A	S1-S4 DOMAIN OF POTASSIUM CHANNEL SUBFAMILY T MEMBER 1	-	-	-
C	GATING RING OF 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	protein-containing complex organization protein homotetramerization cellular component organization cellular component biogenesis cellular component assembly protein complex oligomerization protein tetramerization protein-containing complex assembly protein homooligomerization cellular process cellular component organization or biogenesis transport monoatomic ion transmembrane transport potassium ion transmembrane transport protein-containing complex organization protein homotetramerization cellular component organization cellular component biogenesis cellular component assembly protein complex oligomerization protein tetramerization protein-containing complex assembly protein homooligomerization cellular process cellular component organization or biogenesis 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	cell periphery cellular anatomical structure plasma membrane membrane

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
B	IPR013099	Potassium channel domain	Domain
B	IPR047871	Calcium-activated potassium channel slowpoke-like	Family
B	IPR055153	Calcium-activated potassium channel slowpoke-like, RCK domain	Domain
B	IPR003929	Calcium-activated potassium channel BK, alpha subunit	Domain
C	IPR013099	Potassium channel domain	Domain
C	IPR047871	Calcium-activated potassium channel slowpoke-like	Family
C	IPR055153	Calcium-activated potassium channel slowpoke-like, RCK domain	Domain
C	IPR003929	Calcium-activated potassium channel BK, alpha subunit	Domain

Membrane Protein Annotation: PDBTM PDBTM Database Homepage

Chains	External Link	Comment
B, C	PDBTM	Annotated as membrane protein by PDBTM

Membrane Protein Annotation: mpstruc mpstruc Database Homepage

Chains	Resource Link	Group	Subgroup	Protein
B, C	mpstruc	TRANSMEMBRANE PROTEINS: ALPHA-HELICAL	Channels: Potassium, Sodium, & Proton Ion-Selective	Slo2.2 Na⁺-activated K⁺ channel, complete

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.