Olfactory adenylate cyclase of the rat. Stimulation by odorants and inhibition by Ca2+

Membranes prepared from the olfactory mucosa of the rat show a high level of adenylate cyclase activity. The activity increases up to 2-fold in the presence of physiologically relevant concentrations of odorants and is inhibited by Ca2+. The level of cyclase activity found is sufficient to explain the speed of olfactory transduction, which occurs on a time scale of tens of milliseconds.