The Enzyme Database

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Accepted name: FAD:protein FMN transferase
Reaction: FAD + [protein]-L-threonine = [protein]-FMN-L-threonine + AMP
Other name(s): flavin transferase; apbE (gene name)
Systematic name: FAD:protein riboflavin-5′-phosphate transferase
Comments: The enzyme catalyses the transfer of the FMN portion of FAD and its covalent binding to the hydroxyl group of an L-threonine residue in a target flavin-binding protein such as the B and C subunits of EC, NADH:ubiquinone reductase (Na+-transporting). Requires Mg2+.
Links to other databases: BRENDA, EXPASY, Gene, KEGG, MetaCyc, PDB
1.  Bertsova, Y.V., Fadeeva, M.S., Kostyrko, V.A., Serebryakova, M.V., Baykov, A.A. and Bogachev, A.V. Alternative pyrimidine biosynthesis protein ApbE is a flavin transferase catalyzing covalent attachment of FMN to a threonine residue in bacterial flavoproteins. J. Biol. Chem. 288 (2013) 14276–14286. [PMID: 23558683]
[EC created 2013, modified 2018]

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