Entrez Summary: 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].
UniProt Summary: Associates with KCNQ2 or KCNQ5 to form a potassium channel with essentially identical properties to the channel underlying the native M-current, a slowly activating and deactivating potassium conductance which plays a critical role in determining the subthreshold electrical excitability of neurons as well as the responsiveness to synaptic inputs. Therefore, it is important in the regulation of neuronal excitability. {ECO:0000269|PubMed:11159685, ECO:0000269|PubMed:14534157, ECO:0000269|PubMed:16319223, ECO:0000269|PubMed:9872318}.
Pfam DomainsGO Terms
Pfam Domains
Ion trans 2
Ion trans
KCNQ channel
KCNQC3-Ank-G bd
GO Terms
membrane hyperpolarization
node of Ranvier
axon initial segment
delayed rectifier potassium channel activity
voltage-gated potassium channel activity
voltage-gated potassium channel complex
potassium ion transmembrane transport
potassium ion transport
calmodulin binding
monovalent inorganic cation transport
anterograde trans-synaptic signaling
chemical synaptic transmission
regulation of membrane potential
trans-synaptic signaling
synaptic signaling
regulation of ion transmembrane transport
inorganic cation transmembrane transport
regulation of transmembrane transport
cation transmembrane transport
cell surface
metal ion transport
inorganic ion transmembrane transport
regulation of ion transport
cation transport
ion transmembrane transport
cell-cell signaling
transmembrane transport
ion transport
integral component of plasma membrane
regulation of transport
CRISPR Data
Compound HitMost Correlated Genes in ChemogenomicsTissues where Essential in the Avana Dataset (DepMap 20Q1)