Guanosine 3'',5''-Cyclic Monophosphate is an intracellular second messenger which are involved in the transduction of a diverse array of stimuli, mediating metabolic and growth regulation.
ChEBI: A 3',5'-cyclic purine nucleotide that is 3',5'-cyclic GMP.
An important second messenger, cGMP is a major intracellular mediator of extracellular signals such as nitric oxide and natriuretic peptides. Cyclic GMP interacts with three types of intracellular receptor proteins: cGMP-dependent protein kinases, cGMP-regulated channels, and cGMP-regulated cyclic nucleotide phosphodiesterases. A primary action of elevated cGMP levels in vivo is the stimulation of cGMP-dependent protein kinase (PKG).