The Enzyme Database

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Accepted name: molybdenum cofactor cytidylyltransferase
Reaction: CTP + molybdenum cofactor = diphosphate + cytidylyl molybdenum cofactor
For diagram of MoCo biosynthesis, click here
Glossary: molybdenum cofactor = MoCo = MoO2(OH)Dtpp-mP = {[(5aR,8R,9aR)-2-amino-4-oxo-6,7-bis(sulfanyl-κS)-1,5,5a,8,9a,10-hexahydro-4H-pyrano[3,2-g]pteridin-8-yl]methyl dihydrogenato(2-) phosphate}(dioxo)molybdate
Other name(s): MocA; CTP:molybdopterin cytidylyltransferase; MoCo cytidylyltransferase; Mo-MPT cytidyltransferase
Systematic name: CTP:molybdenum cofactor cytidylyltransferase
Comments: Catalyses the cytidylation of the molybdenum cofactor. This modification occurs only in prokaryotes. Divalent cations such as Mg2+ or Mn2+ are required for activity. ATP or GTP cannot replace CTP.
Links to other databases: BRENDA, EXPASY, KEGG, MetaCyc
1.  Neumann, M., Mittelstadt, G., Seduk, F., Iobbi-Nivol, C. and Leimkuhler, S. MocA is a specific cytidylyltransferase involved in molybdopterin cytosine dinucleotide biosynthesis in Escherichia coli. J. Biol. Chem. 284 (2009) 21891–21898. [DOI] [PMID: 19542235]
2.  Neumann, M., Seduk, F., Iobbi-Nivol, C. and Leimkuhler, S. Molybdopterin dinucleotide biosynthesis in Escherichia coli: Identification of amino acid residues of molybdopterin dinucleotide transferases that determine specificity for binding of guanine or cytosine nucleotides. J. Biol. Chem. 286 (2011) 1400–1408. [DOI] [PMID: 21081498]
[EC created 2011]

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