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The first of two articles in which Rodbell indicated that in addition to transducing hormone signals across the membrane, the G-protein could also inhibit signaling at the discriminator point. He provided evidence that G-proteins at the cellular receptors were sophisticated enough to both inhibit and activate signal transduction.
Periodical. Yamamura, Hirohei, Pramod M. Lad, and Martin Rodbell. "GTP Stimulates and Inhibits Adenylate Cyclase in Fat Cell Membranes through Distinct Regulatory Processes." Journal of Biological Chemistry 252, 22 (25 November 1977): 7964-7966. Article. 3 Images.. Journal of Biological Chemistry