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).

References

Cech SY, Ignarro LJ (1978). "Cytidine 3',5'-monophosphate (cyclic CMP) formation by homogenates of mouse liver". Biochem. Biophys. Res. Commun. 80 (1): 119–25. doi:10.1016/0006-291X(78)91112-9. PMID 23778.
Newton RP, Salih SG, Hakeem NA, Kingston EE, Beynon JH (1985). "3',5'-Cyclic UMP, -cyclic IMP, -cyclic TMP and related enzymes in mammalian-tissues". Biochem. Soc. Trans. 13: 1134–1135.

Phosphorus–oxygen lyases (EC 4.6)

4.6.1

Adenylate cyclase
(4.6.1.1)

intracellular	ADCY1 ADCY2 ADCY3 ADCY4 ADCY5 ADCY6 ADCY7 ADCY8 ADCY9 ADCY10
extracellular	Extracellular adenylate cyclase

Guanylate cyclase
(4.6.1.2)

soluble guanylyl cyclase	GUCY1A2 GUCY1A3 GUCY1B2 GUCY1B3
guanylate cyclase-coupled receptor	GUCY2C GUCY2D ANP (NPR1 NPR2)

Other

v t e Enzymes
Activity	Active site Binding site Catalytic triad Oxyanion hole Enzyme promiscuity Diffusion-limited enzyme Cofactor Enzyme catalysis
Regulation	Allosteric regulation Cooperativity Enzyme inhibitor Enzyme activator
Classification	EC number Enzyme superfamily Enzyme family List of enzymes
Kinetics	Enzyme kinetics Eadie–Hofstee diagram Hanes–Woolf plot Lineweaver–Burk plot Michaelis–Menten kinetics
Types	EC1 Oxidoreductases (list) EC2 Transferases (list) EC3 Hydrolases (list) EC4 Lyases (list) EC5 Isomerases (list) EC6 Ligases (list) EC7 Translocases (list)