KCNK9 Rabbit Polyclonal Antibody (ER1902-47)

UNIPROT #

Q9NPC2

PROTEIN NAME

KCNK9

SYNONYMS

Potassium channel subfamily K member 9;Acid-sensitive potassium channel protein TASK-3;TWIK-related acid-sensitive K(+) channel 3;Two pore potassium channel KT3.2;Two pore K(+) channel KT3.2;Kcnk9;Task3

SEQUENCE SIMILARITIES

Belongs to the two pore domain potassium channel (TC 1.A.1.8) family.

TISSUE SPECIFICITY

Mainly found in the cerebellum. Also found in adrenal gland, kidney and lung.

SUBCELLULAR LOCATION

Cell membrane.

FUNCTION

This gene encodes K2P9.1, one of the members of the superfamily of potassium channel proteins containing two pore-forming P domains. This open channel is highly expressed in the cerebellum. It is inhibited by extracellular acidification and arachidonic acid, and strongly inhibited by phorbol 12-myristate 13-acetate. Phorbol 12-myristate 13-acetate is also known as 12-O-tetradecanoylphorbol-13-acetate (TPA). TASK channels are additionally inhibited by hormones and transmitters that signal through GqPCRs. The resulting cellular depolarization is thought to regulate processes such as motor control and aldosterone secretion. Despite early controversy about the exact mechanism underlying this inhibition, the current view is that Diacyl-glycerol, produced by the breakdown of Phosphatidylinositol-4,5-bis-phosphate by Phospholipase Cβ causes channel closure. Mice in which the TASK-3 gene has been deleted have reduced sensitivity to inhalation anaesthetics, exaggerated nocturnal activity and cognitive deficits as well as significantly increased appetite and weight gain. A role for TASK-3 channels in neuronal network oscillations has also been described: TASK-3 knockout mice lack the atropine-sensitive halothane-induced theta oscillation (4–7 Hz) from the hippocampus and are unable to maintain theta oscillations during rapid eye movement (REM) sleep.