2-C-methyl-D-erythritol 4-phosphate Cytidylyltransferase

In enzymology, a 2-C-methyl-D-erythritol 4-phosphate cytidylyltransferase (EC 2.7.7.60) is an enzyme that catalyzes the chemical reaction:

2-C-methyl-D-erythritol 4-phosphate + CTP diphosphate + 4-(cytidine 5'-diphospho)-2-C-methyl-D-erythritol

• 2-C-methylerythritol 4-phosphate

• Cytidine triphosphate

• 4-diphosphocytidyl-2-C-methylerythritol (CDP-ME)

Thus, the two substrates of this enzyme are CTP and 2-C-methyl-D-erythritol 4-phosphate, whereas its two products are diphosphate and 4-(cytidine 5'-diphospho)-2-C-methyl-D-erythritol.

This enzyme belongs to the family of transferases, specifically those transferring phosphorus-containing nucleotide groups (nucleotidyltransferases).

This enzyme participates in biosynthesis of steroids. It catalyzes the third step of the deoxyxylulose-5-phosphate pathway (DXP) of isoprenoid biosynthesis; the formation of 4-diphosphocytidyl-2C-methyl-D-erythritol from CTP and 2C-methyl-D-erythritol 4-phosphate. The isoprenoid pathway is a well known target for anti-infective drug development.