Figure 5.

Genomic organisation of the genes required for menaquinone biosynthesis in S. aureus. The genes required for menaquinone biosynthesis are distributed in three operons (A, B and C) that are distantly encoded in the S. aureus genome (represented as a circle). A and B genomic regions are organised as noncontiguous operons. Triangles and rectangles represent putative promoters and transcriptional terminators, respectively. Different putative transcripts are shown as dashed arrows. (+) and (−) indicate forward and reverse DNA strands, respectively. The menaquinone biosynthetic pathway is represented at the right of the figure