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Fig. 1 | Microbial Cell Factories

Fig. 1

From: Mechanism of microbial production of acetoin and 2,3-butanediol optical isomers and substrate specificity of butanediol dehydrogenase

Fig. 1

Biosynthetic pathway of 2,3-BD in 2,3-butanediol-producing bacteria (A) and S. cerevisiae (B). LDH, lactate dehydrogenase; PFL, pyruvate–formate lyase; PTA, phospho-transacetylase; ACK, acetate kinase; ALDH, acetaldehyde dehydrogenase; ADH, ethanol dehydrogenase; ALS, α-acetolactate synthase; ALDC, α-acetolactate decarboxylase; BDH, 2,3-butanediol dehydrogenase (acetoin reductase); FDH, formate-hydrogen lyase complex; DAR, Diacetyl reductase; PDC, pyruvate decarboxylase

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