2BNN:
reference: Structure and reactivity of hydroxypropylphosphonic acid epoxidase in fosfomycin biosynthesis by a cation- and flavin-dependent mechanism., McLuskey K, Cameron S, Hammerschmidt F, Hunter WN, Proc Natl Acad Sci U S A. 2005 Oct 4;102(40):14221-6. Epub 2005 Sep 26. PMID: 16186494

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