1NN7

Crystal Structure Of The Tetramerization Domain Of The Shal Voltage-Gated Potassium Channel

External Resource: Annotation

Domain Annotation: SCOP/SCOPe Classification
Domain Annotation: SCOP2 Classification
Domain Annotation: ECOD Classification
Domain Annotation: CATH
Protein Family Annotation
Gene Ontology: Gene Product Annotation
InterPro: Protein Family Classification

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

Chains	Domain Info	Class	Fold	Superfamily	Family	Domain	Species	Provenance Source (Version)
A	d1nn7a_	Alpha and beta proteins (a+b)	POZ domain	POZ domain	Tetramerization domain of potassium channels	Potassium channel kv4.2	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	SCOP2 Family	Tetramerization domain of potassium channels	8021087	4001137	SCOP2 (2022-06-29)
A	SCOP2 Superfamily	POZ domain	8033467	3000894	SCOP2 (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	e1nn7A1	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)

Protein Family Annotation Pfam Database Homepage

Chains	Accession	Name	Description	Comments	Source
A	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	potassium channel Kv4.2	monoatomic cation transmembrane transporter activity A-type (transient outward) potassium channel activity gated channel activity monoatomic ion channel activity potassium ion transmembrane transporter activity outward rectifier potassium channel 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 monoatomic cation transmembrane transporter activity A-type (transient outward) potassium channel activity gated channel activity monoatomic ion channel activity potassium ion transmembrane transporter activity outward rectifier potassium channel 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 protein-containing complex binding binding cation binding ion binding metal ion binding small molecule binding voltage-gated monoatomic ion channel activity involved in regulation of postsynaptic membrane potential	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 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 cellular response to stimulus response to stimulus cellular response to oxygen levels cellular response to hypoxia cellular response to decreased oxygen levels cellular response to chemical stimulus cellular response to stress response to hypoxia response to stress response to chemical response to oxygen levels response to abiotic stimulus membrane repolarization biological regulation regulation of biological quality regulation of membrane potential behavior rhythmic process multicellular organismal process circadian behavior locomotory behavior rhythmic behavior circadian rhythm locomotor rhythm cellular response to xenobiotic stimulus response to xenobiotic stimulus system process muscle contraction muscle system process action potential cardiac muscle cell action potential nervous system process transmission of nerve impulse cell communication neuronal action potential response to mechanical stimulus response to external stimulus cellular response to mechanical stimulus cellular response to abiotic stimulus cellular response to external stimulus cellular response to environmental stimulus 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 periphery postsynapse cellular anatomical structure postsynaptic membrane synapse cell junction membrane plasma membrane plasma membrane region synaptic membrane sarcolemma T-tubule somatodendritic compartment cell body cell periphery postsynapse cellular anatomical structure postsynaptic membrane synapse cell junction membrane plasma membrane plasma membrane region synaptic membrane sarcolemma T-tubule somatodendritic compartment cell body perikaryon neuronal cell body voltage-gated potassium channel complex protein-containing complex plasma membrane protein complex potassium channel complex membrane protein complex cation channel complex transporter complex Kv4.2-KChIP2 channel complex transmembrane transporter complex monoatomic ion channel complex cell projection dendrite dendritic tree neuron projection plasma membrane bounded cell projection glutamatergic synapse membrane-bounded organelle intracellular anatomical structure intracellular membrane-bounded organelle endomembrane system intracellular organelle perinuclear endoplasmic reticulum perinuclear region of cytoplasm organelle endoplasmic reticulum cytoplasm neuron spine dendritic spine neuronal cell body membrane cell body membrane membrane microdomain membrane raft plasma membrane raft caveola anchoring junction postsynaptic specialization membrane postsynaptic specialization GABA-ergic synapse

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
A	IPR021645	Shal-type voltage-gated potassium channels, N-terminal	Domain
A	IPR028325	Voltage-gated potassium channel	Family
A	IPR024587	Potassium channel, voltage dependent, Kv4, C-terminal	Domain
A	IPR003968	Potassium channel, voltage dependent, Kv	Family
A	IPR003975	Potassium channel, voltage dependent, Kv4	Family
A	IPR004055	Potassium channel, voltage dependent, Kv4.2	Family
A	IPR003131	Potassium channel tetramerisation-type BTB domain	Domain
A	IPR011333	SKP1/BTB/POZ domain superfamily	Homologous Superfamily
A	IPR000210	BTB/POZ domain	Domain
A	IPR005821	Ion transport domain	Domain
A	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.