The Enzyme Database

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Accepted name: cyclic dehypoxanthinyl futalosine synthase
Reaction: dehypoxanthine futalosine + S-adenosyl-L-methionine = cyclic dehypoxanthinyl futalosine + 5′-deoxyadenosine + L-methionine
For diagram of the futalosine pathway, click here
Glossary: dehypoxanthine futalosine = 3-{3-[(2R,3S,4R)-3,4,5-trihydroxytetrahydrofuran-2-yl]propanoyl}benzoate
cyclic dehypoxanthinyl futalosine = (2R,3S,4R)-3,4,5-trihydroxy-4′-oxo-3′,4,4′,5-tetrahydro-2’H,3H-spiro[furan-2,1′-naphthalene]-6′-carboxylate
Other name(s): MqnC; dehypoxanthinyl futalosine cyclase
Systematic name: dehypoxanthine futalosine:S-adenosyl-L-methionine oxidoreductase (cyclizing)
Comments: This enzyme is a member of the ‘AdoMet radical’ (radical SAM) family. The enzyme, found in several bacterial species, is part of the futalosine pathway for menaquinone biosynthesis.
Links to other databases: BRENDA, EXPASY, Gene, KEGG, MetaCyc
1.  Hiratsuka, T., Furihata, K., Ishikawa, J., Yamashita, H., Itoh, N., Seto, H. and Dairi, T. An alternative menaquinone biosynthetic pathway operating in microorganisms. Science 321 (2008) 1670–1673. [DOI] [PMID: 18801996]
2.  Cooper, L.E., Fedoseyenko, D., Abdelwahed, S.H., Kim, S.H., Dairi, T. and Begley, T.P. In vitro reconstitution of the radical S-adenosylmethionine enzyme MqnC involved in the biosynthesis of futalosine-derived menaquinone. Biochemistry 52 (2013) 4592–4594. [DOI] [PMID: 23763543]
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