In G-Proteins, Binding of GTP Causes Which of the Following

Multiple Choice

In G-proteins, binding of GTP causes which of the following to occur?

A) association of the Gβ and Gγ subunits with a receptor tyrosine kinase
B) dissociation of Gα from the dimer formed by Gβ and Gγ
C) phosphoylation of Gα using the GTP as the phosphorylating agent
D) guanylation of Gβ which promotes dissociation and activation of Gα
E) none of the above