in-a-gpcr-pathway-what-triggers-the-exchange-of-gdp-for-gtp-in-the-g-protein

Question

In a GPCR pathway, what triggers the exchange of GDP for GTP in the G protein?

Accepted Answer

Conformational change in the GPCR upon ligand binding.

Answer

Hydrolysis of ATP.

Answer

Dissociation of the beta and gamma subunits.

Answer

Activation of the effector enzyme.