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100 1 _ |a Muschallik, Lukas
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245 _ _ |a Synthesis of α-hydroxy ketones and vicinal ( R , R )-diols by Bacillus clausii DSM 8716 T butanediol dehydrogenase
260 _ _ |a London
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520 _ _ |a α-hydroxy ketones (HK) and 1,2-diols are important building blocks for fine chemical synthesis. Here, we describe the R-selective 2,3-butanediol dehydrogenase from B. clausii DSM 8716T (BcBDH) that belongs to the metal-dependent medium chain dehydrogenases/reductases family (MDR) and catalyzes the selective asymmetric reduction of prochiral 1,2-diketones to the corresponding HK and, in some cases, the reduction of the same to the corresponding 1,2-diols. Aliphatic diketones, like 2,3-pentanedione, 2,3-hexanedione, 5-methyl-2,3-hexanedione, 3,4-hexanedione and 2,3-heptanedione are well transformed. In addition, surprisingly alkyl phenyl dicarbonyls, like 2-hydroxy-1-phenylpropan-1-one and phenylglyoxal are accepted, whereas their derivatives with two phenyl groups are not substrates. Supplementation of Mn2+ (1 mM) increases BcBDH's activity in biotransformations. Furthermore, the biocatalytic reduction of 5-methyl-2,3-hexanedione to mainly 5-methyl-3-hydroxy-2-hexanone with only small amounts of 5-methyl-2-hydroxy-3-hexanone within an enzyme membrane reactor is demonstrated.
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700 1 _ |a Molinnus, Denise
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700 1 _ |a Jablonski, Melanie
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700 1 _ |a Kipp, Carina Ronja
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700 1 _ |a Bongaerts, Johannes
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700 1 _ |a Pohl, Martina
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700 1 _ |a Wagner, Torsten
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700 1 _ |a Schöning, Michael J.
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700 1 _ |a Selmer, Thorsten
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700 1 _ |a Siegert, Petra
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773 _ _ |a 10.1039/D0RA02066D
|g Vol. 10, no. 21, p. 12206 - 12216
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