Protein
Potassium channel subfamily K member 4
Organism
Rattus norvegicus
Function
Voltage-insensitive potassium channel (PubMed:11374070, PubMed:15677687). Channel opening is triggered by mechanical forces that deform the membrane, and by raising the intracellular pH to basic levels (PubMed:11374070, PubMed:15677687). The channel is inactive at 24 degrees Celsius (in vitro); raising the temperature to 37 degrees Celsius increases the frequency of channel opening, with a further increase in channel activity when the temperature is raised to 42 degrees Celsius (PubMed:15677687). Plays a role in the perception of pain caused by heat (By similarity). Plays a role in the sensory perception of pain caused by pressure (By similarity).
Similarity
Belongs to the two pore domain potassium channel (TC 1.A.1.8) family.
Sequence
MRSTTLLALLALVLLYLVSGALVFQALEQPHEQQVQKDLEDGRDQFLKDHPCVSQKNLEGFIKLVAEALGGGANPETSWTNSSNHSSAWNLGSAFFFSGTIITTIGYGNIALHTDAGRLFCIFYALVGIPLFGMLLAGVGDRLGSSLRRGIGHIEAVFLKWHVPPGLVRMLSAVLFLLIGCLLFVLTPTFVFSYMESWSKLEAIYFVIVTLTTVGFGDYVPGDGTGQNSPAYQPLVWFWILFGLAYFASVLTTIGNWLRAVSRRTRAEMGGLTAQAASWTGTVTARVTQRTGPSAPPPEKEQPLLPSSLPAPPAVAEPAHRPGSPAPAEKVETPPPTASALDYPSENLAFIDESSDTQSERGCALPRAPRGRRRPNPTKKPSRPRGPGRLRDKAVPV