Annotations: 7PQU

Domain Annotation: ECOD Classification ECOD Database Homepage

Chains	Family Name	Domain Identifier	Architecture	Possible Homology	Homology	Topology	Family	Provenance Source (Version)
A	PF00520	e7pquA1	A: alpha complex topology	X: Voltage-gated ion channels (From Topology)	H: Voltage-gated ion channels (From Topology)	T: Voltage-gated ion channels	F: PF00520	ECOD (1.6)
A	PF02214	e7pquA2	A: a+b two layers	X: POZ domain (From Topology)	H: POZ domain (From Topology)	T: POZ domain	F: PF02214	ECOD (1.6)
C	PF00520	e7pquC3	A: alpha complex topology	X: Voltage-gated ion channels (From Topology)	H: Voltage-gated ion channels (From Topology)	T: Voltage-gated ion channels	F: PF00520	ECOD (1.6)
C	PF02214	e7pquC1	A: a+b two layers	X: POZ domain (From Topology)	H: POZ domain (From Topology)	T: POZ domain	F: PF02214	ECOD (1.6)
D	PF00520	e7pquD3	A: alpha complex topology	X: Voltage-gated ion channels (From Topology)	H: Voltage-gated ion channels (From Topology)	T: Voltage-gated ion channels	F: PF00520	ECOD (1.6)
D	PF02214	e7pquD2	A: a+b two layers	X: POZ domain (From Topology)	H: POZ domain (From Topology)	T: POZ domain	F: PF02214	ECOD (1.6)
B	PF00520	e7pquB2	A: alpha complex topology	X: Voltage-gated ion channels (From Topology)	H: Voltage-gated ion channels (From Topology)	T: Voltage-gated ion channels	F: PF00520	ECOD (1.6)
B	PF02214	e7pquB1	A: a+b two layers	X: POZ domain (From Topology)	H: POZ domain (From Topology)	T: POZ domain	F: PF02214	ECOD (1.6)

Protein Family Annotation Pfam Database Homepage

Chains	Accession	Name	Description	Comments	Source
A, B, C, D	PF02214	BTB/POZ domain (BTB_2)	BTB/POZ domain	In voltage-gated K+ channels this domain is responsible for subfamily-specific assembly of alpha-subunits into functional tetrameric channels [1]. In KCTD1 (Swiss:Q719H9) this domain functions as a transcriptional repressor [2]. It also mediates homo ...	In voltage-gated K+ channels this domain is responsible for subfamily-specific assembly of alpha-subunits into functional tetrameric channels [1]. In KCTD1 (Swiss:Q719H9) this domain functions as a transcriptional repressor [2]. It also mediates homomultimerisation of KCTD1 and interaction of KCTD1 with the transcription factor AP-2-alpha [2-3].	Domain
A, B, C, D	PF00520	Ion transport protein (Ion_trans)	Ion transport protein	-	Family

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
A, B, C, D	Potassium voltage-gated channel subfamily C member 1	cytoskeletal protein binding protein binding binding kinesin binding monoatomic cation transmembrane transporter activity 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 cytoskeletal protein binding protein binding binding kinesin binding monoatomic cation transmembrane transporter activity 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 monoatomic ion transmembrane transporter activity transporter activity metal ion transmembrane transporter activity transmembrane transporter activity delayed rectifier potassium channel activity voltage-gated monoatomic ion channel activity involved in regulation of presynaptic membrane potential transmembrane transporter binding	developmental process corpus callosum development multicellular organismal process head development forebrain development animal organ development brain development nervous system development multicellular organism development central nervous system development anatomical structure development telencephalon development system development nerve development developmental process corpus callosum development multicellular organismal process head development forebrain development animal organ development brain development nervous system development multicellular organism development central nervous system development anatomical structure development telencephalon development system development nerve development cranial nerve development optic nerve development 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 cellular component organization cellular component biogenesis cellular component assembly protein-containing complex organization protein complex oligomerization protein tetramerization protein-containing complex assembly cellular component organization or biogenesis response to stimulus response to potassium ion response to metal ion response to chemical response to inorganic substance cerebellum development metencephalon development hindbrain development response to toxic substance response to light stimulus response to light intensity response to radiation response to abiotic stimulus response to auditory stimulus response to mechanical stimulus response to external stimulus globus pallidus development diencephalon development neural nucleus development cellular response to stimulus cellular response to chemical stimulus cellular response to xenobiotic stimulus response to xenobiotic stimulus protein homooligomerization response to endogenous stimulus response to nerve growth factor response to growth factor regulation of localization positive regulation of cation transmembrane transport regulation of cellular process regulation of potassium ion transport positive regulation of biological process regulation of monoatomic ion transmembrane transport positive regulation of monoatomic ion transport positive regulation of transmembrane transport positive regulation of monoatomic ion transmembrane transport regulation of metal ion transport positive regulation of cellular process regulation of biological process regulation of transport regulation of monoatomic ion transport biological regulation regulation of potassium ion transmembrane transport positive regulation of potassium ion transport regulation of transmembrane transport positive regulation of transport positive regulation of potassium ion transmembrane transport regulation of monoatomic cation transmembrane transport response to amine response to organic substance response to organonitrogen compound response to nitrogen compound response to fibroblast growth factor	cell periphery postsynapse postsynaptic membrane synapse cell junction membrane plasma membrane plasma membrane region cellular anatomical entity synaptic membrane cell surface presynapse presynaptic membrane voltage-gated potassium channel complex cell periphery postsynapse postsynaptic membrane synapse cell junction membrane plasma membrane plasma membrane region cellular anatomical entity synaptic membrane cell surface presynapse presynaptic membrane voltage-gated potassium channel complex protein-containing complex plasma membrane protein complex potassium channel complex membrane protein complex cation channel complex transporter complex transmembrane transporter complex monoatomic ion channel complex axon neuron projection axon terminus plasma membrane bounded cell projection cell projection distal axon calyx of Held neuron projection terminus cell leading edge leading edge membrane somatodendritic compartment neuron projection membrane dendrite membrane dendrite dendritic tree cell projection membrane axolemma main axon neuronal cell body membrane cell body cell body membrane neuronal cell body

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
A, B, C, D	IPR005403	Potassium channel, voltage dependent, Kv3.1	Family
A, B, C, D	IPR000210	BTB/POZ domain	Domain
A, B, C, D	IPR003974	Potassium channel, voltage dependent, Kv3	Family
A, B, C, D	IPR003968	Potassium channel, voltage dependent, Kv	Family
A, B, C, D	IPR005821	Ion transport domain	Domain
A, B, C, D	IPR003131	Potassium channel tetramerisation-type BTB domain	Domain
A, B, C, D	IPR011333	SKP1/BTB/POZ domain superfamily	Homologous Superfamily
A, B, C, D	IPR027359	Voltage-dependent channel domain superfamily	Homologous Superfamily

Pharos: Disease Associations Pharos Homepage Annotation

Chains	Drug Target	Associated Disease
A, B, C, D	Pharos: P48547	progressive myoclonus epilepsy progressive myoclonic epilepsy type 7 dentatorubral-pallidoluysian atrophy pilocytic astrocytoma action myoclonus-renal failure syndrome atypical teratoid rhabdoid tumor epilepsy glioblastoma Lambert-Eaton myasthenic syndrome malignant glioma multiple sclerosis primitive neuroectodermal tumor progressive supranuclear palsy astrocytic tumor Biotin-Responsive Encephalopathy progressive myoclonus epilepsy progressive myoclonic epilepsy type 7 dentatorubral-pallidoluysian atrophy pilocytic astrocytoma action myoclonus-renal failure syndrome atypical teratoid rhabdoid tumor epilepsy glioblastoma Lambert-Eaton myasthenic syndrome malignant glioma multiple sclerosis primitive neuroectodermal tumor progressive supranuclear palsy astrocytic tumor Biotin-Responsive Encephalopathy Hodgkins lymphoma large cell medulloblastoma neurodegenerative disease subependymal giant cell astrocytoma intellectual disability malignant ependymoma medulloblastoma

Membrane Protein Annotation: OPM OPM Database Homepage

Chains	External Link	Type	Class	Superfamily	Family
A, B, C, D	OPM	Transmembrane	Alpha-helical polytopic	Ion channel (VIC) superfamily	KvAP voltage-regulated K channels

Membrane Protein Annotation: PDBTM PDBTM Database Homepage

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

Membrane Protein Annotation: mpstruc mpstruc Database Homepage

Chains	Resource Link	Group	Subgroup	Protein
A, B, C, D	mpstruc	TRANSMEMBRANE PROTEINS: ALPHA-HELICAL	Channels: Potassium, Sodium, & Proton Ion-Selective	K_v3.1 voltage-gated potassium channel, apo 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 R01GM133198.