TRPV4 is a cation-selective channel, activated in response to systemic osmotic pressure.
Function: Non-selective calcium permeant cation channel probably involved in osmotic sensitivity and mechanosensitivity. Activation by exposure to hypotonicity within the physiological range exhibits an outward rectification. Also activated by low pH, citrate and phorbol esters. Increase of intracellular Ca(2+) potentiates currents. Channel activity seems to be regulated by a calmodulin-dependent mechanism with a negative feedback mechanism.
Subunit: Interacts with calmodulin. Interacts with Map7 and Src family Tyr protein kinases LYN, SRC, FYN, HCK, LCK and YES.
Subcellular location: Membrane, Multi-pass membrane protein.
Tissue specificity: Expressed lung, spleen, kidney, testis, fat, and at very low levels in trigeminal ganglia. Also known as: Transient receptor potential cation channel subfamily V member 4, TrpV4, osm-9-like TRP channel 4, OTRPC4, Vanilloid receptor-like channel 2, Vanilloid receptor-like protein 2, Vanilloid receptor-related osmotically-activated channel, VR-OAC, Transient receptor potential protein 12, TRP12, Trp12, VRL-2, VROAC, OTRPC4, VR-OAC, MGC150050, 0610033B08Rik, Trp12, Vrl2, Vroac.