Annotations: 1QDV

Domain Annotation: SCOP/SCOPe Classification SCOP-e Database Homepage

Chains	Domain Info	Class	Fold	Superfamily	Family	Domain	Species	Provenance Source (Version)
A	d1qdva_	Alpha and beta proteins (a+b)	POZ domain	POZ domain	Tetramerization domain of potassium channels	Kv1.2	Norway rat (Rattus norvegicus ) [TaxId: 10116 ],	SCOPe (2.08)
B	d1qdvb_	Alpha and beta proteins (a+b)	POZ domain	POZ domain	Tetramerization domain of potassium channels	Kv1.2	Norway rat (Rattus norvegicus ) [TaxId: 10116 ],	SCOPe (2.08)
C	d1qdvc_	Alpha and beta proteins (a+b)	POZ domain	POZ domain	Tetramerization domain of potassium channels	Kv1.2	Norway rat (Rattus norvegicus ) [TaxId: 10116 ],	SCOPe (2.08)
D	d1qdvd_	Alpha and beta proteins (a+b)	POZ domain	POZ domain	Tetramerization domain of potassium channels	Kv1.2	Norway rat (Rattus norvegicus ) [TaxId: 10116 ],	SCOPe (2.08)

Domain Annotation: SCOP2 Classification SCOP2 Database Homepage

Chains	Type	Family Name	Domain Identifier	Family Identifier	Provenance Source (Version)
A	SCOP2B Superfamily	POZ domain	8035031	3000894	SCOP2B (2022-06-29)
B	SCOP2B Superfamily	POZ domain	8035031	3000894	SCOP2B (2022-06-29)
C	SCOP2B Superfamily	POZ domain	8035031	3000894	SCOP2B (2022-06-29)
D	SCOP2B Superfamily	POZ domain	8035031	3000894	SCOP2B (2022-06-29)

Domain Annotation: ECOD Classification ECOD Database Homepage

Chains	Family Name	Domain Identifier	Architecture	Possible Homology	Homology	Topology	Family	Provenance Source (Version)
A	BTB_2	e1qdvA1	A: a+b two layers	X: POZ domain (From Topology)	H: POZ domain (From Topology)	T: POZ domain	F: BTB_2	ECOD (1.6)
B	BTB_2	e1qdvB1	A: a+b two layers	X: POZ domain (From Topology)	H: POZ domain (From Topology)	T: POZ domain	F: BTB_2	ECOD (1.6)
C	BTB_2	e1qdvC1	A: a+b two layers	X: POZ domain (From Topology)	H: POZ domain (From Topology)	T: POZ domain	F: BTB_2	ECOD (1.6)
D	BTB_2	e1qdvD1	A: a+b two layers	X: POZ domain (From Topology)	H: POZ domain (From Topology)	T: POZ domain	F: BTB_2	ECOD (1.6)

Domain Annotation: CATH CATH Database Homepage

Chain	Domain	Class	Architecture	Topology	Homology	Provenance Source (Version)
A	3.30.710.10	Alpha Beta	2-Layer Sandwich	Potassium Channel Kv1.1	Chain A	CATH (4.3.0)
B	3.30.710.10	Alpha Beta	2-Layer Sandwich	Potassium Channel Kv1.1	Chain A	CATH (4.3.0)
C	3.30.710.10	Alpha Beta	2-Layer Sandwich	Potassium Channel Kv1.1	Chain A	CATH (4.3.0)
D	3.30.710.10	Alpha Beta	2-Layer Sandwich	Potassium Channel Kv1.1	Chain A	CATH (4.3.0)

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

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
A, B, C, D	KV1.2 VOLTAGE-GATED POTASSIUM CHANNEL	cytoskeletal protein binding protein binding binding kinesin binding passive transmembrane transporter activity gated channel activity voltage-gated monoatomic ion channel activity involved in regulation of postsynaptic membrane potential monoatomic ion channel activity channel activity voltage-gated channel activity voltage-gated monoatomic ion channel activity monoatomic ion transmembrane transporter activity transporter activity transmembrane transporter activity cytoskeletal protein binding protein binding binding kinesin binding passive transmembrane transporter activity gated channel activity voltage-gated monoatomic ion channel activity involved in regulation of postsynaptic membrane potential monoatomic ion channel activity channel activity voltage-gated channel activity voltage-gated monoatomic ion channel activity monoatomic ion transmembrane transporter activity transporter activity transmembrane transporter activity monoatomic cation transmembrane transporter activity potassium ion transmembrane transporter activity potassium channel activity voltage-gated monoatomic cation channel activity monoatomic cation channel activity voltage-gated potassium channel activity inorganic molecular entity transmembrane transporter activity inorganic cation transmembrane transporter activity metal ion transmembrane transporter activity delayed rectifier potassium channel activity voltage-gated monoatomic ion channel activity involved in regulation of presynaptic membrane potential outward rectifier potassium channel activity	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 biological regulation action potential regulation of biological quality regulation of membrane potential monoamine transport regulation of localization nitrogen compound transport regulation of cellular process regulation of catecholamine secretion signaling organic hydroxy compound transport dopamine transport cell communication secretion by cell regulation of secretion by cell catecholamine transport signal release regulation of biological process secretion regulation of transport export from cell cell-cell signaling dopamine secretion regulation of secretion catecholamine secretion amine transport regulation of amine transport regulation of dopamine secretion cranial nerve morphogenesis anatomical structure morphogenesis cranial nerve structural organization anatomical structure arrangement optic nerve morphogenesis optic nerve structural organization export across plasma membrane potassium ion export across plasma membrane system process nervous system process transmission of nerve impulse neuronal action potential circadian sleep/wake cycle, sleep rhythmic process circadian sleep/wake cycle rhythmic behavior circadian rhythm regulation of circadian sleep/wake cycle regulation of circadian sleep/wake cycle, non-REM sleep regulation of circadian rhythm circadian sleep/wake cycle, non-REM sleep behavior regulation of behavior circadian behavior sleep regulation of multicellular organismal process regulation of circadian sleep/wake cycle, sleep circadian sleep/wake cycle process pallium development cerebral cortex development sensory perception sensory perception of pain cellular component organization cellular component biogenesis cellular component assembly protein-containing complex organization protein complex oligomerization protein-containing complex assembly protein homooligomerization cellular component organization or biogenesis	cell projection cellular anatomical structure cell leading edge plasma membrane bounded cell projection lamellipodium cell periphery postsynapse postsynaptic membrane synapse cell junction membrane plasma membrane plasma membrane region synaptic membrane cell projection cellular anatomical structure cell leading edge plasma membrane bounded cell projection lamellipodium cell periphery postsynapse postsynaptic membrane synapse cell junction membrane plasma membrane plasma membrane region synaptic membrane axon main axon juxtaparanode region of axon neuron projection somatodendritic compartment cell body perikaryon neuronal cell body cell-cell junction anchoring junction paranodal junction presynapse presynaptic membrane dendrite dendritic tree axon initial segment glutamatergic synapse 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 membrane-bounded organelle intracellular anatomical structure organelle subcompartment intracellular membrane-bounded organelle endomembrane system endoplasmic reticulum subcompartment intracellular organelle organelle nuclear outer membrane-endoplasmic reticulum membrane network endoplasmic reticulum cytoplasm organelle membrane endoplasmic reticulum membrane leading edge membrane lamellipodium membrane cell projection membrane axon terminus distal axon calyx of Held neuron projection terminus endosome intracellular vesicle cytoplasmic vesicle vesicle neuronal cell body membrane cell body membrane

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
A, B, C, D	IPR003972	Potassium channel, voltage dependent, Kv1	Family
A, B, C, D	IPR028325	Voltage-gated potassium channel	Family
A, B, C, D	IPR000210	BTB/POZ domain	Domain
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	IPR004049	Potassium channel, voltage dependent, Kv1.2	Family
A, B, C, D	IPR011333	SKP1/BTB/POZ domain superfamily	Homologous Superfamily
A, B, C, D	IPR027359	Voltage-dependent channel domain superfamily	Homologous Superfamily

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.