Trimeric G protein/adenylate cycl. surf.pot.

Surface potential of G alpha (a trimeric G protein) in complex with adenylate cyclase, The trimeric guanine nucleotide-binding proteins are involved as transducers in various transmembrane signalling systems. The G alpha (s) protein is involved in hormonal regulation of adenylate cyclase: it activates the cyclase in response to beta- adrenergic stimuli.