KCNQ3 Gene Summary [Human]

This gene encodes a protein that functions in the regulation of neuronal excitability. The encoded protein forms an M-channel by associating with the products of the related KCNQ2 or KCNQ5 genes, which both encode integral membrane proteins. M-channel currents are inhibited by M1 muscarinic acetylcholine receptors and are activated by retigabine, a novel anti-convulsant drug. Defects in this gene are a cause of benign familial neonatal convulsions type 2 (BFNC2), also known as epilepsy, benign neonatal type 2 (EBN2). Alternative splicing of this gene results in multiple transcript variants. [provided by RefSeq, May 2014]

Details

Type
Protein Coding
Official Symbol
KCNQ3
Official Name
potassium voltage-gated channel subfamily Q member 3 [Source:HGNC Symbol;Acc:HGNC:6297]
Ensembl ID
ENSG00000184156
Bio databases IDs NCBI: 3786 Ensembl: ENSG00000184156
Aliases potassium voltage-gated channel subfamily Q member 3
Synonyms BFNC2, EBN2, KV7.3, potassium voltage-gated channel subfamily Q member 3, potassium voltage-gated channel, subfamily Q, member 3
Species
Human, Homo sapiens
OrthologiesMouseRat

Protein Domains

A protein domain is a distinct structural or functional region within a protein that can evolve, function, and exist independently of the rest of the protein chain. These domains in human KCNQ3 often fold into stable, three-dimensional structures and are associated with specific biological functions, such as binding to DNA, other proteins, or small molecules.
  • potassium channel
  • ubiquitin protein ligase binding
  • protein kinase binding
  • Ion transport protein
  • calmodulin binding
  • protein binding
  • ion channel
  • KCNQ voltage-gated potassium channel
  • voltage-gated potassium channel
  • Ankyrin-G binding motif of KCNQ2-3
  • ion channel binding
  • voltage-gated ion channel
  • cation channel

Pathways

Biological processes and signaling networks where the KCNQ3 gene in human plays a role, providing insight into its function and relevance in health or disease.

Top Findings

The most significant associations for this gene, including commonly observed domains, pathway involvement, and functional highlights based on current data.
disease
  • COVID-19
  • mental retardation
  • major depression
  • benign familial neonatal seizures
  • benign familial neonatal seizures 2
  • hereditary disorder
  • schizophrenia
  • neurodevelopmental disorder
  • benign rolandic epilepsy
  • coronary artery disease
regulated by
regulates
role in cell
  • apoptosis
  • differentiation
  • hyperexcitability
  • firing in
  • hyperpolarization
  • plasticity
  • response by
  • exocytosis by
  • action potential
  • assembly

Subcellular Expression

Locations within the cell where the protein is known or predicted to be active, providing insight into its function and cellular context.
  • Plasma Membrane
  • membrane fraction
  • axon component
  • cell surface
  • somatodendritic region
  • cellular membrane
  • nodes of Ranvier
  • nerve ending
  • perikaryon
  • dendrites

Gene Ontology Annotations

Describes the biological processes, cellular components, and molecular functions associated with the human KCNQ3 gene, providing context for its role in the cell.

Biological Process

Functions and activities the gene product is involved in
  • potassium ion transmembrane transport
  • synaptic transmission
  • response to organic cyclic compound
  • endocytosis
  • exocytosis
  • nerve development
  • sensory perception of sound
  • protein targeting
  • mitochondrial depolarization
  • cellular response to calcium ion
  • protein import into nucleus
  • regulation of synaptic plasticity
  • apoptosome assembly
  • response to auditory stimulus
  • membrane hyperpolarization
  • gene expression
  • cellular response to xenobiotic stimulus
  • neuron remodeling
  • neuron apoptotic process
  • regulation of action potential in neuron

Cellular Component

Where in the cell the gene product is active
  • initial segment
  • voltage-gated potassium channel complex
  • mitochondrion
  • node of Ranvier
  • synapse
  • plasma membrane
  • cell surface

Molecular Function

What the gene product does at the molecular level
  • voltage-gated potassium channel activity
  • calmodulin binding
  • protein binding

Gene-Specific Assays for Results You Can Trust

Streamline your workflow with assays designed for this gene. Our targeted dPCR and qPCR assays help you generate meaningful data – efficiently and accurately.