G Beta-Gamma

**Semantic type:** Amino Acid, Peptide, or Protein

**Definition:** G beta-gamma dimers associate with the alpha subunit to comprise heterotrimeric G proteins. This dimer stimulates various, and sometimes opposing, cell signaling events in response to ligation of a G protein coupled receptor, such as the beta-adrenergic, adenosine, dopamine, LTB4, and PGE2 receptors, among many others.

**Synonyms:** - G Beta Gamma - G Beta:Gamma - G-Beta-Gamma