Molybdenum cofactor cytidylyltransferase (, MocA, CTP:molybdopterin cytidylyltransferase, MoCo cytidylyltransferase, Mo-MPT cytidyltransferase) is an enzyme with systematic name CTP:molybdenum cofactor cytidylyltransferase. This enzyme catalyses the following chemical reaction:
Catalyses the cytidylation of the molybdenum cofactor.