what-role-do-guanine-exchange-factors-play-in-the-activation-of-g-proteins

Question

What role do guanine exchange factors play in the activation of G proteins?

Accepted Answer

They facilitate the exchange of GDP for GTP in the G protein alpha subunit

Answer

They inhibit the binding of GTP to the G protein

Answer

They degrade GTP to GDP in the G protein

Answer

They phosphorylate the G protein alpha subunit