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The second 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. Cooper, Dermot M. F., Werner Schlegel, Michael C. Lin, and Martin Rodbell. "The Fat Cell Adenylate Cyclase System: Characterization and Manipulation of Its Biomodal Regulation by GTP." Journal of Biological Chemistry 254, 18 (25 September 1979): 8927-8931. Article. 5 Images.. Journal of Biological Chemistry