A G protein is only active Select one when a phosphate has b

A G protein is only active Select one: when a phosphate has been removed from it when a kinase has added a phosphate to it when it has GTP bound to it when it has been activated by cyclic GMP when it has GDP bound to it

Solution

The answer is a. when a phosphate has been removed from it.

you can find the step by step g protein activation:

G-protein with it\'s alpha subunit exposed on the outside surface of the cell and its beta and gamma subunits on the inside surface, binds to a hormone

The alpha sub unit releases GDP

The alpha subunit binds to GTP and separate from the rest of the g protein

Alpha subunit hydrolyzes GTP and a phosphate is lost

Alpha subunit reattaches to the rest of the g protein