Figure 4. Comparison of BT productions of several different strains.
DH5α/pTrc-mdlC, strain DH5α P. putida 2-keto acid decarboxylase; BL21/pET-mdlC&pA-yjhG, strain BL21 star(DE3) expressing P. putida 2-keto acid decarboxylase and native E. coli dehydratase; BL21/pET-mdlC&pA-adhPyjhG, strain BL21 star(DE3) expressing P. putida 2-keto acid decarboxylase and native E. coli dehydratase and aldehyde reductase. Data were obtained after each strain was induced for 48 h in liquid LB medium supplemented with 5 g/L of potassium xylonate as the substrates for BT production.