| 2 | Expression and activity of heterologous hydroxyisocaproate dehydrogenases in Synechocystis sp.PCC 6803ΔhoxYH显示文摘Exploiting light to drive redox reactions is currently a hot topic since light is considered as an environmentally friendly source of energy.Consequently,cyanobacteria,which can use light e.g.,for generating NADPH,are in the focus of research.Previously,it has been shown that various heterologous redox enzymes could be expressed in these microorganisms.Here we demonstrated the successful inducer-free expression of��-keto-acid dehydroge-nases(L-HicDH and D-HicDH)from Lactobacillus confusus DSM 20196 and Lactobacillus paracasei DSM 20008 in Synechocystis sp.PCC 6803ΔhoxYH mutant using replicative plasmids.While the L-HicDH showed poor activity limited by the amount of expressed enzyme,the D-HicDH was applied both in vivo and in vitro,transforming the selected��-keto acids to the corresponding optically pure(R)-��-hydroxy acids(ee>99%)in up to 53%and 90%conversion,respectively. | Valentina Jurka Christoph K.Winkler Silvan Poschenrieder Paulo Oliveira Catarina C.Pacheco Eunice A.Ferreira Florian Weissensteiner Piera De Santis Selin Kara Robert Kourist Paula Tamagnini Wolfgang Kroutil | 2022 | Engineering Microbiology2022，2，1： | 0 |
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