... 1,4,5-triphosphate (InsP3) and diacylglycerol. Although cAMP and InsP3cascadesappear to be active as two alternative pathways in vertebrate olfaction [7], mechanisms of olfactory signaltransduction in ... Afterits activation, different secondary pathways can occur:adenylate cyclase catalyses the formation of cAMP,whereas phospholipase C hydrolyses membrane phospha-tidylinositol, liberating inositol ... a better understanding of all the elements of the olfactory signaling pathway in insects, wereport here characterization, molecular cloning and expres-sion localization in the antennae of the...