7UKH

Human Kv4.2-KChIP2-DPP6 channel complex in an open state, intracellular region

External Resource: Annotation

Domain Annotation: ECOD Classification
Protein Family Annotation
Gene Ontology: Gene Product Annotation
InterPro: Protein Family Classification
Pharos: Disease Associations
Membrane Protein Annotation: mpstruc

Domain Annotation: ECOD Classification ECOD Database Homepage

Chains	Family Name	Domain Identifier	Architecture	Possible Homology	Homology	Topology	Family	Provenance Source (Version)
F [auth J]	EF-hand_7_2	e7ukhJ2	A: alpha arrays	X: EF-hand	H: EF-hand-related	T: EF-hand	F: EF-hand_7_2	ECOD (1.6)
F [auth J]	EF-hand_7_10	e7ukhJ1	A: alpha arrays	X: EF-hand	H: EF-hand-related	T: EF-hand	F: EF-hand_7_10	ECOD (1.6)
G [auth K]	EF-hand_7_2	e7ukhK2	A: alpha arrays	X: EF-hand	H: EF-hand-related	T: EF-hand	F: EF-hand_7_2	ECOD (1.6)
G [auth K]	EF-hand_7_10	e7ukhK1	A: alpha arrays	X: EF-hand	H: EF-hand-related	T: EF-hand	F: EF-hand_7_10	ECOD (1.6)
E [auth I]	EF-hand_7_2	e7ukhI2	A: alpha arrays	X: EF-hand	H: EF-hand-related	T: EF-hand	F: EF-hand_7_2	ECOD (1.6)
E [auth I]	EF-hand_7_10	e7ukhI1	A: alpha arrays	X: EF-hand	H: EF-hand-related	T: EF-hand	F: EF-hand_7_10	ECOD (1.6)
H [auth L]	EF-hand_7_2	e7ukhL2	A: alpha arrays	X: EF-hand	H: EF-hand-related	T: EF-hand	F: EF-hand_7_2	ECOD (1.6)
H [auth L]	EF-hand_7_10	e7ukhL1	A: alpha arrays	X: EF-hand	H: EF-hand-related	T: EF-hand	F: EF-hand_7_10	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	PF11601	Shal-type voltage-gated potassium channels, N-terminal (Shal-type)	Shal-type voltage-gated potassium channels, N-terminal	This family represents the short N-terminal helical domain of Shal-type voltage-gated potassium channels. The domain interacts with Kv channel-interacting proteins to modulate cell surface expression and the function of Kv4 channels. The interaction ...	This family represents the short N-terminal helical domain of Shal-type voltage-gated potassium channels. The domain interacts with Kv channel-interacting proteins to modulate cell surface expression and the function of Kv4 channels. The interaction of the N-terminus of Shal-type protein Kv4.2 and the Kv interacting protein KChiP1 forms a structure which is like the structure between calmodulin and its target peptides when they interact. Interactions of an N terminal alpha helix in Kv4.2 and a C terminal alpha helix in KChIP1 are essential for the modulation of Kv4.2 by KChIPs [1].	Domain
E [auth I], F [auth J], G [auth K], H [auth L]	PF13833	EF-hand domain pair (EF-hand_8)	EF-hand domain pair	-	Domain
E [auth I], F [auth J], G [auth K], H [auth L]	PF13499	EF-hand domain pair (EF-hand_7)	EF-hand domain pair	-	Domain

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 D member 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 voltage-gated monoatomic ion channel activity involved in regulation of postsynaptic membrane potential cation binding ion binding binding metal ion binding small molecule binding	heart process multicellular organismal process system process regulation of biological process regulation of heart contraction regulation of system process biological regulation circulatory system process regulation of blood circulation regulation of multicellular organismal process heart contraction blood circulation transport monoatomic ion transmembrane transport heart process multicellular organismal process system process regulation of biological process regulation of heart contraction regulation of system process biological regulation circulatory system process regulation of blood circulation regulation of multicellular organismal process heart contraction blood circulation 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 action potential regulation of biological quality regulation of membrane potential 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 nervous system process transmission of nerve impulse cell communication neuronal action potential trans-synaptic signaling synaptic signaling signaling anterograde trans-synaptic signaling cell-cell signaling chemical synaptic transmission behavior rhythmic process circadian behavior locomotory behavior rhythmic behavior circadian rhythm locomotor rhythm muscle contraction muscle system process 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 postsynaptic membrane synapse cell junction membrane plasma membrane plasma membrane region cellular anatomical entity synaptic membrane somatodendritic compartment cell body perikaryon neuronal cell body cell periphery postsynapse postsynaptic membrane synapse cell junction membrane plasma membrane plasma membrane region cellular anatomical entity synaptic membrane 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 anchoring junction postsynaptic specialization membrane postsynaptic specialization organelle GABA-ergic synapse glutamatergic synapse neuron spine neuron projection dendritic spine plasma membrane bounded cell projection cell projection dendrite dendritic tree neuronal cell body membrane cell body membrane membrane microdomain membrane raft plasma membrane raft
E [auth I], F [auth J], G [auth K], H [auth L]	Isoform 2 of Kv channel-interacting protein 2	cation binding ion binding binding calcium ion binding metal ion binding small molecule binding monoatomic cation transmembrane transporter activity potassium ion transmembrane transporter activity monoatomic ion channel activity potassium channel activity monoatomic cation channel activity passive transmembrane transporter activity inorganic molecular entity transmembrane transporter activity inorganic cation transmembrane transporter activity cation binding ion binding binding calcium ion binding metal ion binding small molecule binding monoatomic cation transmembrane transporter activity potassium ion transmembrane transporter activity monoatomic ion channel activity potassium channel activity monoatomic cation channel activity passive transmembrane transporter activity inorganic molecular entity transmembrane transporter activity inorganic cation transmembrane transporter activity channel activity monoatomic ion transmembrane transporter activity transporter activity metal ion transmembrane transporter activity transmembrane transporter activity signal sequence binding ER retention sequence binding peptide binding protein binding transmembrane transporter binding protein-containing complex binding potassium channel regulator activity channel regulator activity ion channel regulator activity molecular function regulator activity transporter regulator activity identical protein binding	regulation of localization positive regulation of cation transmembrane transport regulation of cellular process localization positive regulation of monoatomic ion transport positive regulation of monoatomic ion transmembrane transport monoatomic cation transport regulation of potassium ion transmembrane transporter activity regulation of biological process regulation of monoatomic ion transport inorganic ion transmembrane transport regulation of potassium ion transmembrane transport positive regulation of cation channel activity establishment of localization regulation of localization positive regulation of cation transmembrane transport regulation of cellular process localization positive regulation of monoatomic ion transport positive regulation of monoatomic ion transmembrane transport monoatomic cation transport regulation of potassium ion transmembrane transporter activity regulation of biological process regulation of monoatomic ion transport inorganic ion transmembrane transport regulation of potassium ion transmembrane transport positive regulation of cation channel activity establishment of localization regulation of cation channel activity inorganic cation transmembrane transport transmembrane transport regulation of molecular function regulation of transmembrane transport potassium ion transport regulation of potassium ion transport transport monoatomic ion transmembrane transport positive regulation of biological process regulation of transmembrane transporter activity potassium ion transmembrane transport regulation of monoatomic ion transmembrane transport metal ion transport regulation of transporter activity monoatomic cation transmembrane transport positive regulation of molecular function positive regulation of transmembrane transport monoatomic ion transport regulation of metal ion transport positive regulation of cellular process regulation of monoatomic ion transmembrane transporter activity regulation of transport biological regulation positive regulation of potassium ion transport positive regulation of transport positive regulation of transporter activity positive regulation of potassium ion transmembrane transport positive regulation of ion transmembrane transporter activity positive regulation of voltage-gated potassium channel activity cellular process regulation of monoatomic cation transmembrane transport positive regulation of potassium ion transmembrane transporter activity heart process multicellular organismal process system process regulation of heart contraction regulation of system process circulatory system process regulation of blood circulation regulation of multicellular organismal process heart contraction blood circulation action potential regulation of biological quality regulation of membrane potential membrane repolarization cellular developmental process cell development cellular component organization neurogenesis multicellular organism development neuron differentiation cell differentiation anatomical structure development cellular component organization or biogenesis cell maturation system development membrane organization developmental process developmental maturation nervous system development neuronal ion channel clustering generation of neurons clustering of voltage-gated potassium channels anatomical structure maturation neuron development neuron maturation export from cell export across plasma membrane potassium ion export across plasma membrane cellular response to stimulus response to stimulus signaling signal transduction cell communication trans-synaptic signaling synaptic signaling anterograde trans-synaptic signaling cell-cell signaling chemical synaptic transmission cardiac muscle cell membrane repolarization membrane repolarization during cardiac muscle cell action potential cardiac muscle cell action potential membrane repolarization during action potential muscle contraction muscle system process positive regulation of potassium ion export across plasma membrane regulation of potassium ion export across plasma membrane detection of stimulus response to metal ion response to chemical detection of chemical stimulus detection of calcium ion response to calcium ion response to inorganic substance	voltage-gated potassium channel complex protein-containing complex plasma membrane protein complex membrane plasma membrane potassium channel complex membrane protein complex cation channel complex cellular anatomical entity transporter complex Kv4.2-KChIP2 channel complex cell periphery transmembrane transporter complex monoatomic ion channel complex voltage-gated potassium channel complex protein-containing complex plasma membrane protein complex membrane plasma membrane potassium channel complex membrane protein complex cation channel complex cellular anatomical entity transporter complex Kv4.2-KChIP2 channel complex cell periphery transmembrane transporter complex monoatomic ion channel complex somatodendritic compartment cell projection dendrite dendritic tree neuron projection plasma membrane bounded cell projection intracellular anatomical structure cytoplasm synapse cell junction

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
A, B, C, D	IPR021645	Shal-type voltage-gated potassium channels, N-terminal	Domain
A, B, C, D	IPR000210	BTB/POZ domain	Domain
A, B, C, D	IPR024587	Potassium channel, voltage dependent, Kv4, C-terminal	Domain
A, B, C, D	IPR003968	Potassium channel, voltage dependent, Kv	Family
A, B, C, D	IPR003975	Potassium channel, voltage dependent, Kv4	Family
A, B, C, D	IPR005821	Ion transport domain	Domain
A, B, C, D	IPR004055	Potassium channel, voltage dependent, Kv4.2	Family
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
E [auth I], F [auth J], G [auth K], H [auth L]	IPR002048	EF-hand domain	Domain
E [auth I], F [auth J], G [auth K], H [auth L]	IPR011992	EF-hand domain pair	Homologous Superfamily
E [auth I], F [auth J], G [auth K], H [auth L]	IPR028846	Recoverin family	Family
E [auth I], F [auth J], G [auth K], H [auth L]	IPR018247	EF-Hand 1, calcium-binding site	Binding Site

Pharos: Disease Associations Pharos Homepage Annotation

Chains	Drug Target	Associated Disease
A, B, C, D	Pharos: Q9NZV8	attention deficit hyperactivity disorder, inattentive type epilepsy large cell medulloblastoma malignant mesothelioma pituitary cancer subependymal giant cell astrocytoma atypical teratoid rhabdoid tumor invasive ductal breast carcinoma lung cancer medulloblastoma psoriasis breast fibroadenoma Lambert-Eaton myasthenic syndrome malignant ependymoma multiple sclerosis attention deficit hyperactivity disorder, inattentive type epilepsy large cell medulloblastoma malignant mesothelioma pituitary cancer subependymal giant cell astrocytoma atypical teratoid rhabdoid tumor invasive ductal breast carcinoma lung cancer medulloblastoma psoriasis breast fibroadenoma Lambert-Eaton myasthenic syndrome malignant ependymoma multiple sclerosis Sjogren syndrome
E [auth I], F [auth J], G [auth K], H [auth L]	Pharos: Q9NS61	atrial fibrillation breast fibroadenoma glioblastoma malignant glioma Pick disease atypical teratoid rhabdoid tumor congestive heart failure invasive ductal breast carcinoma medulloblastoma type 2 diabetes mellitus breast carcinoma ductal breast carcinoma in situ malignant ependymoma oligodendroglioma

Membrane Protein Annotation: mpstruc mpstruc Database Homepage

Chains	Resource Link	Group	Subgroup	Protein
A, B, C, D, E [auth I] A, B, C, D, E [auth I], F [auth J], G [auth K], H [auth L]	mpstruc	TRANSMEMBRANE PROTEINS: ALPHA-HELICAL	Channels: Potassium, Sodium, & Proton Ion-Selective	K_v4.2 Voltage-gated potassium Channel, in complex with KChIP2, TM region, open state

RCSB PDB Core Operations are funded by the National Science Foundation (DBI-1832184), 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.