KCNQ3 Back

potassium voltage-gated channel, KQT-like subfamily, member 3

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NCBI Description of KCNQ3

The M channel is a slowly activating and deactivating potassium channel that plays a critical role in the regulation of neuronal excitability. The M channel is formed by the association of the protein encoded by this gene and one of two related proteins encoded by the KCNQ2 and KCNQ5 genes, both integral membrane proteins. M channel currents are inhibited by M1 muscarinic acetylcholine receptors and 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). Two variants encoding distinct isoforms have been found.

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Figure notes

• "Mouse over" a mutation to see details.
• Missense green saturation indicates evolutionary conservation of the mutated positions.
• Red hashes in protein strip are splice sites.
• Blue-white-red bars are log2 copy ratio distributions (–1 to +1) from Zack et al. (2013).


KCNQ3 is highly significantly mutated in
KCNQ3 is significantly mutated in
KCNQ3 is near significance in

Click on a tumor type to see its full list of significant genes.

Data details

Mutation list for KCNQ3