Figure 2From: Characterization of mleR, a positive regulator of malolactic fermentation and part of the acid tolerance response in Streptococcus mutansPromoter activity of mleR and mleS in the absence of malate. Promoter activity of mleR and mleS during batch cultivation in BMS medium without malate under anaerobic conditions. A: Optical density and luciferase activity of both promoters in the wildtype background. B: Optical density and luciferase activity of both promoters in the ΔmleR background. Grey square, Optical density of strains carrying mleRp-luc; Black circle, Optical density of strains carrying mleSp-luc; Open square, RLU of strains carrying mleRp-luc; Open circle, RLU of strains carrying mleSp-lucBack to article page