Kinetic analysis of Escherichia coli 2-C-methyl-D-erythritol-4-phosphate cytidyltransferase, wild type and mutants, reveals roles of active site amino acids.

Abstract excerpt

Escherichia coli 2-C-methyl-D-erythritol-4-phosphate cytidyltransferase (YgbP or IspD) catalyzes the conversion of 2-C-methyl-D-erythritol 4-phosphate (MEP) and cytidine triphosphate (CTP) to 4-diphosphocytidyl-2-C-methylerythritol (CDPME). Pulse chase experiments established that the reaction involves an ordered sequential mechanism with mandatory initial binding of CTP. On the basis of analysis of the...

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