Guanylate cyclase is one of the important regulation molecules in the signal transudation pathway, catalyzing the conversion of GTP to cGMP. cGMP is the most important second messenger as cAMP;

• 可溶性鸟苷酸环化酶是胞内酶，是细胞信号传导通路上一种重要的调控蛋白，催化GTP生成cGMP，cGMP与cAMP同为细胞内重要的第二信使。