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Fig. 3 | Microbial Cell Factories

Fig. 3

From: Evaluation of novel inducible promoter/repressor systems for recombinant protein expression in Lactobacillus plantarum

Fig. 3

Promoter characteristics of PxylA and growth behavior. a, c MRS medium with glucose and 5 μg ml−1 CM; b, d MRS medium with galactose and 5 μg ml−1 CM, mean values of four replicates are given and standard deviations are indicated. Filled square induced 2 % xylose. Filled diamond induced 0.2 % xylose. Square non-induced. Solid line negative control. a,b specific expression levels of mCherry under control of PxylA after induction with 2, 0.2 % xylose (or no induction) after 2 h in BioLector® micro-fermentation. Change of mCherry expression (RFUs, relative fluorescent units) over time (hours) of PxylA mediated expression in comparison to the negative control is shown. c and d corresponding calculated OD600 values

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