EC - CTP-dependent riboflavin kinase

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IntEnz Enzyme Nomenclature


Accepted name:
CTP-dependent riboflavin kinase
Other names:
Methanocaldococcus jannaschii Mj0056
Systematic name:
CTP:riboflavin 5'-phosphotransferase



This archaeal enzyme differs from EC, riboflavin kinase, in using CTP as the donor nucleotide. UTP, but not ATP or GTP, can also act as a phosphate donor but it is at least an order of magnitude less efficient than CTP.

Links to other databases

Enzymes and pathways: NC-IUBMB , BRENDA , ExplorEnz , ENZYME@ExPASy , KEGG , MetaCyc , UniPathway
Structural data: CSA , EC2PDB
UniProtKB/Swiss-Prot: (47) [show] [UniProt]


  1. Ammelburg, M., Hartmann, M.D., Djuranovic, S., Alva, V., Koretke, K.K., Martin, J., Sauer, G., Truffault, V., Zeth, K., Lupas, A.N. and Coles, M.
    A CTP-dependent archaeal riboflavin kinase forms a bridge in the evolution of cradle-loop barrels.
    Structure 15: 1577-1590 (2007). [PMID: 18073108]

[EC created 2008]