Peptide sequence: SSRMGIKDRI RMGSSQRRTG PSKQHLAPPT MPTSPSSEQV GEATSPTKVQ
Sequence homology: Cow: 93%; Dog: 92%; Guinea Pig: 92%; Horse: 93%; Human: 100%; Mouse: 100%; Pig: 93%; Rabbit: 100%; Rat: 100%
The protein encoded by this gene forms a potassium channel that is thought to play a critical role in the regulation of neuronal excitability, particularly in sensory cells of the cochlea. The current generated by this channel is inhibited by M1 muscarinic acetylcholine receptors and activated by retigabine, a novel anti-convulsant drug. The encoded protein can form a homomultimeric potassium channel or possibly a heteromultimeric channel in association with the protein encoded by the KCNQ3 gene. Defects in this gene are a cause of nonsyndromic sensorineural deafness type 2 , an autosomal dominant form of progressive hearing loss. Two transcript variants encoding different isoforms have been found for this gene.
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Protein Aliases: DFNA2; DFNA2A; KQT-like 4; KQT-like subfamily member 4; KV7.4; potassium channel KQT-like 4; Potassium channel subunit alpha KvLQT4; potassium channel, voltage gated KQT-like subfamily Q, member 4; Potassium voltage-gated channel; potassium voltage-gated channel KQT-like protein 4; Potassium voltage-gated channel subfamily KQT member 4; potassium voltage-gated channel, KQT-like subfamily, member 4; potassium voltage-gated channel, subfamily Q, member 4; Voltage-gated potassium channel subunit Kv7.4
Gene Aliases: DFNA2; DFNA2A; KCNQ4; KV7.4