Fig. 3From: Rational strain improvement for surfactin production: enhancing the yield and generating novel structuresThe schematic model for the regulation of the transcription of the srfA operon network involved in two extracellular signaling peptide-mediated quorum sensing in B. subtilis. T-bars indicate the negative effects on DNA binding or protein interactions. Bent arrow represents the promoter. ‘P’ in the circle represents the phosphoryl groupBack to article page