Heterotrimeric GTP-Binding Proteins

**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. Upon activation the GTP-BINDING PROTEIN ALPHA SUBUNIT of the complex dissociates leaving a dimer of a GTP-BINDING PROTEIN BETA SUBUNIT bound to a GTP-BINDING PROTEIN GAMMA SUBUNIT.

**Tree numbers:** - D08.811.277.040.330.300.200 - D12.776.157.325.332 - D12.776.476.338.200 - D12.776.543.325

**Synonyms:** - Heterotrimeric GTP-Binding Protein - Heterotrimeric G Protein - Heterotrimeric G-Proteins - Heterotrimeric G-Protein