1. Neer, E. J. (1995) Heterotrimeric G proteins: organizers of transmembrane signals. Cell 80, 249–257.
2. Murakami, T. and Yusuda, H. (1986) Rat heart cell membranes contain three substrates for cholera toxin-catalyzed ADP-ribosylation and a single substrate for pertussis toxin-catalyzed ADP-ribosylation. Biochem. Biophys. Res. Commun. 138, 1355–1361, 1986.
3. Itoh, H., Toyama, R., Kozasa, T., Tsukamoto, T., Matsuoka, M., and Kaziro Y. (1988) Presence of three distinct molecular species of Gi protein α subunit: structure of rat cDNAs and human genomic DNAs. J. Biol. Chem. 263, 6656–6664.
4. Yatani, A., Mattera, R., Codina, J., et al. (1988) The G protein-gated atrial K+ channel is stimulated by three dinstict Gi α-subunits. Nature 336, 680–682.
5. Katz, A. M., Tada, M., and Kirchberger, M. A. (1975) Control of calcium transport in the myocardium by the cyclic AMP-protein kinase system. Adv. Cyclic Nucleotide Res. 5, 453–472.