Medical Term: G Protein gamma Subunit defined

Alphabetical Reference to Medical Terms and Definitions
Further Alphabetical Sectioning for Medical Terms: G

What is G Protein gamma Subunit?


Offline Version: PDF

Term Definition: GTP-BINDING PROTEINS that contain three non-identical subunits. They are found associated with members of the seven transmembrane domain superfamily of G-protein coupled receptors. The G-alpha subunit acts as a signal transduction molecule when it binds GTP and dissociates from the heterotrimer. Hydrolysis of GTP by the inherent GTPase activity of the protein causes it to revert to its inactive (heterotrimeric) form. EC 3.6.1.-.


« G Protein beta Subunit | G Protein Regulating Factors »