A G protein:

A. is a component of a signal-transduction
pathway that is coupled to a G proteincoupled
receptor.
B. is composed of three subunits and is
inactive when bound to GDP.
C. releases GDP and binds to GTP when
associated with an activated receptor.
D. becomes deactivated when bound GTP is
dephosphorylated to GDP.
E. All of these choices are correct.


E

Biology & Microbiology

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