Recombinant Human Transient receptor potential cation channel subfamily M member 5 (TRPM5), Truncated

Uniprot Id

Q9NZQ8

Target Species

Human

Target Name

TRPM5

Target Full Name

Transient receptor potential cation channel subfamily M member 5

Target Function

Voltage-modulated Ca(2+)-activated, monovalent cation channel (VCAM) that mediates a transient membrane depolarization and plays a central role in taste transduction. Monovalent-specific, non-selective cation channel that mediates the transport of Na(+), K(+) and Cs(+) ions equally well. Activated directly by increases in intracellular Ca(2+), but is impermeable to it. Gating is voltage-dependent and displays rapid activation and deactivation kinetics upon channel stimulation even during sustained elevations in Ca(2+). Also activated by a fast intracellular Ca(2+) increase in response to inositol 1,4,5-triphosphate-producing receptor agonists. The channel is blocked by extracellular acidification. External acidification has 2 effects, a fast reversible block of the current and a slower irreversible enhancement of current inactivation. Is a highly temperature-sensitive, heat activated channel showing a steep increase of inward currents at temperatures between 15 and 35 degrees Celsius. Heat activation is due to a shift of the voltage-dependent activation curve to negative potentials. Activated by arachidonic acid in vitro. May be involved in perception of bitter, sweet and umami tastes. May also be involved in sensing semiochemicals.

Target Subcellular Location

Cell membrane; Multi-pass membrane protein.

Target Protein Families

Transient receptor (TC 1.A.4) family, LTrpC subfamily, TRPM5 sub-subfamily

Target Tissue Specificity

Strongly expressed in fetal brain, liver and kidney, and in adult prostate, testis, ovary, colon and peripheral blood leukocytes. Also expressed in a large proportion of Wilms' tumors and rhabdomyosarcomas. In monochromosomal cell lines shows exclusive pa

Target Synonyms

9430099A16Rik; Long transient receptor potential channel 5; LTrpC-5; LTrpC5; MLSN1 and TRP related gene 1; MLSN1 and TRP related gene 1 protein; MLSN1 and TRP-related; MLSN1- and TRP-related gene 1 protein; MTR1; Novel protein similar to vertebrate transient receptor potential cation channel, subfamily M, member 5; Transient receptor potential cation channel subfamily M member 5; Transient receptor potential cation channel, subfamily M, member 5; Trpm5; TRPM5 transient receptor potential cation channel, subfamily M, member 5; TRPM5_HUMAN

Target Background

This gene encodes a member of the transient receptor potential (TRP) protein family, which is a diverse group of proteins with structural features typical of ion channels. This protein plays an important role in taste transduction, and has characteristics of a calcium-activated, non-selective cation channel that carries Na+, K+, and Cs+ ions equally well, but not Ca(2+) ions. It is activated by lower concentrations of intracellular Ca(2+), and inhibited by higher concentrations. It is also a highly temperature-sensitive, heat activated channel showing a steep increase of inward currents at temperatures between 15 and 35 degrees Celsius. This gene is located within the Beckwith-Wiedemann syndrome critical region-1 on chromosome 11p15.5, and has been shown to be imprinted, with exclusive expression from the paternal allele.