The Length of Time a G Protein Will Signal Is

Question

The length of time a G protein will signal is determined by the
A)activity of phosphatases that turn off G proteins by dephosphorylating Gα.
B)activity of phosphatases that turn GTP into GDP.
C)degradation of the G protein after Gα separates from Gβγ.
D)GTPase activity of Gα.

Accepted Answer

The length of time a G protein will signal is determined by the GTPase activity of Gα, which hydrolyzes GTP into GDP, leading to the inactivation of the G protein signaling pathway.