Fig. 4From: Site-directed mutagenesis of the quorum-sensing transcriptional regulator SinR affects the biosynthesis of menaquinone in Bacillus subtilisThe morphological changes of the biofilm (A), the biofilm biomass (B) and MK-7 production (C) of BS168, E97K, Y101L, W104K, R105S, SinRquad and KO-SinR. All experiments were independently carried out at least three times, and the results were expressed as mean ± standard deviation (SD)Back to article page