TRPC6

TRPC6

Diagram illustrating TRPC6 channel structure and function.

TRPC6 is a member of the transient receptor potential channel (TRPC) family, which are a group of ion channels located in the cell membrane. These channels are involved in various physiological processes, including the regulation of calcium influx into cells. TRPC6 is particularly important in the kidney, lung, and vascular system.

Structure

TRPC6 channels are composed of six transmembrane domains with a pore region between the fifth and sixth domains. The channel is activated by diacylglycerol (DAG) in a phospholipase C (PLC)-dependent manner, but it is independent of inositol trisphosphate (IP3). This distinguishes TRPC6 from other TRPC family members.

Function

TRPC6 plays a crucial role in the regulation of glomerular filtration rate in the kidney by modulating the contraction of podocytes. In the vascular system, TRPC6 is involved in the regulation of smooth muscle cell contraction and blood pressure.

Clinical Significance

Mutations in the TRPC6 gene have been associated with focal segmental glomerulosclerosis (FSGS), a disease that affects the kidney's filtering units. These mutations can lead to altered channel function, resulting in proteinuria and progressive kidney damage.

Related pages

• Ion channel
• Calcium signaling
• Transient receptor potential channel
• Focal segmental glomerulosclerosis