Cytidylate cyclase

In enzymology, a cytidylate cyclase (EC 4.6.1.6) is an enzyme that catalyzes the chemical reaction

Hence, this enzyme has one substrate, CTP, and two products, 3',5'-cyclic CMP and diphosphate.

This enzyme belongs to the family of lyases, specifically the class of phosphorus-oxygen lyases. The systematic name of this enzyme class is CTP diphosphate-lyase (cyclizing; 3',5'-cyclic-CMP-forming). Other names in common use include 3',5'-cyclic-CMP synthase, cytidylyl cyclase, cytidyl cyclase, and CTP diphosphate-lyase (cyclizing).