A flavoprotein (FAD). The enzyme is involved in biosynthesis of N5-hydroxy-L-ornithine, N5-formyl-N5-hydroxy-L-ornithine or N5-acetyl-N5-hydroxy-L-ornithine. These nonproteinogenic amino acids are building blocks of siderophores produced by some bacteria (e.g. Streptomyces coelicolor, Saccharopolyspora erythraea and Pseudomonas aeruginosa). The enzyme is specific for NADPH. cf. EC 188.8.131.52, L-ornithine N5-monooxygenase [NAD(P)H].
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