pt adp-ribosylated a 39,000 da protein of membrane fraction of hl-60 and did not increase an intracellular cyclic adenosine-3':5'-monophosphate level , indicating that go , a guanine nucleotide-binding protein , involves signal transduction for ra-induced differentiation .
C0086376
guanine nucleotide-binding protein
C0037083
signal transduction