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Báo cáo khoa học: Identifying determinants of NADPH specificity in Baeyer–Villiger monooxygenases

Chia sẻ: Nguyen Thang | Ngày: | Loại File: PDF | Số trang:10

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The Baeyer–Villiger monooxygenase (BVMO), 4-hydroxy-acetophenone monooxygenase (HAPMO), uses NADPH andO2 to oxidize a variety of aromatic ketones and sulfides. The FAD-containing enzyme has a 700-fold preference for NADPH over NADH. Sequence alignment with other BVMOs, which are all known to be selective for NADPH, revealed three conservedbasic residues,whichcouldaccount for the observed coenzyme specificity. The corresponding residues in HAPMO (Arg339, Lys439 and Arg440) were mutated and the properties of the purified mutant enzymes were studied. ...

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