Transient receptor potential canonical 5 channel (TRPC5)

The **transient receptor potential canonical 5 channel (TRPC5)** is a calcium-permeable, nonselective cation channel belonging to the TRPC subfamily of ion channels. As a homotetrameric membrane protein, TRPC5 is widely expressed in various tissues including the brain, kidney, heart, vasculature, and gastrointestinal tract. It plays crucial roles in cellular calcium signaling and is activated downstream of G protein–coupled receptor pathways, usually via phospholipase C activation. TRPC5 is of considerable pharmacological interest as a therapeutic target in kidney disease, depression, anxiety, and cardiovascular disorders, with increasing efforts directed at small-molecule inhibitor development. Unlike some other TRPC channels, TRPC5 has distinctive structural features in its pore-forming region and demonstrates unique electrophysiological properties, such as double-rectifying current-voltage relationships and sensitivity to redox state via an extracellular disulfide bond. Structural and functional studies continue to reveal detailed mechanisms of gating, ion selectivity, and pharmacological modulation relevant to disease mechanisms and drug development [1][2][3][4][5].

Other names

Transient receptor protein channel 5TRPC5Short transient receptor potential channel 5

Inhibition or modulation of TRPC5 channel reduces calcium influx, which can ameliorate disease-associated processes such as fibrosis in kidney disease and excessive neuronal excitability in mood disorders [2][3].