Annotations: 22BK

KCNQ2/3 heterotetramer with 2:2 stoichiometry

External Resource: Annotation

Protein Family Annotation
Gene Ontology: Gene Product Annotation
InterPro: Protein Family Classification
Pharos: Disease Associations

Protein Family Annotation Pfam Database Homepage

Chains	Accession	Name	Description	Comments	Source
A, B [auth C]	PF00520	Ion transport protein (Ion_trans)	Ion transport protein	-	Family
C [auth D], D [auth B]	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 [auth C]	Potassium voltage-gated channel subfamily KQT member 2	cytoskeletal protein binding ankyrin binding protein binding binding calmodulin 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 cytoskeletal protein binding ankyrin binding protein binding binding calmodulin 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 channel activity monoatomic ion transmembrane transporter activity transporter activity metal ion transmembrane transporter activity transmembrane transporter activity	transport monoatomic ion transmembrane transport potassium ion transmembrane transport establishment of localization metal ion transport monoatomic cation transmembrane transport transmembrane transport localization monoatomic ion transport potassium ion transport cellular process monoatomic cation transport developmental process multicellular organism development transport monoatomic ion transmembrane transport potassium ion transmembrane transport establishment of localization metal ion transport monoatomic cation transmembrane transport transmembrane transport localization monoatomic ion transport potassium ion transport cellular process monoatomic cation transport developmental process multicellular organism development multicellular organismal process anatomical structure development nervous system development animal gross anatomical part developmental process system development trans-synaptic signaling synaptic signaling regulation of biological process signaling anterograde trans-synaptic signaling biological regulation cell-cell signaling chemical synaptic transmission cell communication action potential regulation of biological quality regulation of membrane potential	cellular anatomical structure membrane axon cell projection main axon neuron projection node of Ranvier plasma membrane bounded cell projection synapse cell junction cell periphery plasma membrane axon initial segment voltage-gated potassium channel complex cellular anatomical structure membrane axon cell projection main axon neuron projection node of Ranvier plasma membrane bounded cell projection synapse cell junction cell periphery plasma membrane axon initial segment 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
C [auth D], D [auth B]	Potassium voltage-gated channel subfamily KQT member 3	protein binding binding calmodulin 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 protein binding binding calmodulin 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 channel activity monoatomic ion transmembrane transporter activity transporter activity metal ion transmembrane transporter activity transmembrane transporter activity	transport monoatomic ion transmembrane transport potassium ion transmembrane transport establishment of localization metal ion transport monoatomic cation transmembrane transport transmembrane transport localization monoatomic ion transport potassium ion transport cellular process monoatomic cation transport trans-synaptic signaling synaptic signaling transport monoatomic ion transmembrane transport potassium ion transmembrane transport establishment of localization metal ion transport monoatomic cation transmembrane transport transmembrane transport localization monoatomic ion transport potassium ion transport cellular process monoatomic cation transport trans-synaptic signaling synaptic signaling regulation of biological process signaling anterograde trans-synaptic signaling biological regulation cell-cell signaling chemical synaptic transmission cell communication	axon cell projection cellular anatomical structure main axon neuron projection node of Ranvier plasma membrane bounded cell projection synapse cell junction cell surface cell periphery plasma membrane membrane axon initial segment axon cell projection cellular anatomical structure main axon neuron projection node of Ranvier plasma membrane bounded cell projection synapse cell junction cell surface cell periphery plasma membrane membrane axon initial segment 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

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
A, B [auth C]	IPR005821	Ion transport domain	Domain
A, B [auth C]	IPR020969	Ankyrin-G binding site	Binding Site
A, B [auth C]	IPR013821	Potassium channel, voltage dependent, KCNQ, C-terminal	Domain
A, B [auth C]	IPR003947	Potassium channel, voltage dependent, KCNQ2	Family
A, B [auth C]	IPR003937	Potassium channel, voltage dependent, KCNQ	Family
C [auth D], D [auth B]	IPR005821	Ion transport domain	Domain
C [auth D], D [auth B]	IPR020969	Ankyrin-G binding site	Binding Site
C [auth D], D [auth B]	IPR003948	Potassium channel, voltage dependent, KCNQ3	Family
C [auth D], D [auth B]	IPR013821	Potassium channel, voltage dependent, KCNQ, C-terminal	Domain
C [auth D], D [auth B]	IPR003937	Potassium channel, voltage dependent, KCNQ	Family

Pharos: Disease Associations Pharos Homepage Annotation

Chains	Drug Target	Associated Disease
A, B [auth C]	: O43526	developmental and epileptic encephalopathy, 7 epilepsy seizures, benign familial neonatal, 1 benign neonatal seizures intellectual disability brain disease benign familial neonatal epilepsy visual epilepsy nervous system disorder developmental and epileptic encephalopathy, 1 oligodendroglioma developmental disability pilocytic astrocytoma Epilepsy, Cryptogenic schizophrenia developmental and epileptic encephalopathy, 7 epilepsy seizures, benign familial neonatal, 1 benign neonatal seizures intellectual disability brain disease benign familial neonatal epilepsy visual epilepsy nervous system disorder developmental and epileptic encephalopathy, 1 oligodendroglioma developmental disability pilocytic astrocytoma Epilepsy, Cryptogenic schizophrenia seizures, benign familial infantile, 3 seizures, benign familial neonatal, 2 atypical teratoid rhabdoid tumor subependymal giant cell astrocytoma benign familial infantile epilepsy large cell medulloblastoma malignant glioma multiple sclerosis chronic obstructive pulmonary disease primitive neuroectodermal tumor astrocytic tumor glioblastoma major affective disorder 2 malignant mesothelioma nicotine dependence developmental and epileptic encephalopathy Pick disease rolandic epilepsy Lambert-Eaton myasthenic syndrome malignant ependymoma bipolar disorder medulloblastoma
C [auth D], D [auth B]	: O43525	seizures, benign familial neonatal, 2 benign neonatal seizures juvenile myoclonic epilepsy epilepsy multiple sclerosis Partial Epilepsy Treatment Adjunct primitive neuroectodermal tumor astrocytic tumor benign familial infantile epilepsy bipolar disorder intellectual disability large cell medulloblastoma malignant mesothelioma oligodendroglioma Pick disease seizures, benign familial neonatal, 2 benign neonatal seizures juvenile myoclonic epilepsy epilepsy multiple sclerosis Partial Epilepsy Treatment Adjunct primitive neuroectodermal tumor astrocytic tumor benign familial infantile epilepsy bipolar disorder intellectual disability large cell medulloblastoma malignant mesothelioma oligodendroglioma Pick disease schizophrenia atypical teratoid rhabdoid tumor benign familial neonatal epilepsy EJM1 malignant ependymoma medulloblastoma ovarian cancer pilocytic astrocytoma autism spectrum disorder glioblastoma Lambert-Eaton myasthenic syndrome malignant glioma

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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. RCSB PDB uses resources of the National Energy Research Scientific Computing Center (NERSC), a Department of Energy User Facility.

22BK | pdb_000022bk

KCNQ2/3 heterotetramer with 2:2 stoichiometry

External Resource: Annotation

Protein Family Annotation Pfam Database Homepage

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

InterPro: Protein Family Classification InterPro Database Homepage

Pharos: Disease Associations Pharos Homepage Annotation