| Modification Notes |
The transient receptor potential (TRP) protein family consists of a diverse group of cation channels functioning in a variety of homeostatic and regulatory pathways. Four subfamilies exist, based on channel domain homology, not activating stimuli: C type (canonical or classical), V type (vanilloid receptor related), M type (melastatin related) and P type (PKD). TRPM3 (transient receptor potential cation channel subfamily M member 3), also known as long transient receptor potential channel 3v and melastatin 2, is a 1,732 amino acid multi-pass membrane protein that is a member of the M-type subfamily and is closely related to MLSN1 (melastatin 1), also known as TRPM1. TRPM3 functions as a calcium channel that mediates entry of cal-cium ion into the cell. A decrease in extracellular osmolarity, depletion of stored calcium and muscarinic receptor activation result in an increase of TRPM3 channel activity. Nine isoforms of TRPM3 are produced as a result of alternative splicing events. |