ASIC3 Antibody – Rabbit Polyclonal

This gene encodes a member of the degenerin/epithelial sodium channel (DEG/ENaC) superfamily. The members of this family are amiloride-sensitive sodium channels that contain intracellular N and C termini, two hydrophobic transmembrane regions, and a large extracellular loop, which has many cysteine residues with conserved spacing. The member encoded by this gene is an acid sensor and may play an important role in the detection of lasting pH changes. In addition, a heteromeric association between this member and acid-sensing (proton-gated) ion channel 2 has been observed as proton-gated channels sensitive to gadolinium. Alternatively spliced transcript variants have been described. [provided by RefSeq, Feb 2012]

ASIC3: Cation channel with high affinity for sodium, which is gated by extracellular protons and inhibited by the diuretic amiloride. Generates a biphasic current with a fast inactivating and a slow sustained phase. In sensory neurons is proposed to mediate the pain induced by acidosis that occurs in ischemic, damaged or inflamed tissue. May be involved in hyperalgesia. May play a role in mechanoreception. Heteromeric channel assembly seems to modulate channel properties. Belongs to the amiloride-sensitive sodium channel (TC 1.A.6) family. ASIC3 subfamily. 4 isoforms of the human protein are produced by alternative splicing.

Protein type: Transporter, ion channel; Membrane protein, integral; Channel, cation; Transporter; Membrane protein, multi-pass

Chromosomal Location of Human Ortholog: 7q35

Cellular Component: integral to plasma membrane; cytoplasm; plasma membrane

Molecular Function: amiloride-sensitive sodium channel activity; enterobactin transporter activity; cation channel activity; sodium channel activity; PDZ domain binding

Biological Process: detection of mechanical stimulus involved in sensory perception of pain; detection of chemical stimulus involved in sensory perception of pain; transport; response to heat; sensory perception; sensory perception of sour taste; enterobactin transport; response to acidity; detection of temperature stimulus involved in sensory perception of pain; signal transduction; transmembrane transport