Figure 1: Circular representation of the Y. pestis genome.
From: Genome sequence of Yersinia pestis, the causative agent of plague
The outer scale is marked in megabases. Circles 1 and 2 (from the outside in), all genes colour coded by function, forward and reverse strand; circles 3 and 4, pseudogenes; circles 5 and 6, insertion sequence elements (blue, IS1661; black, IS285; red, IS1541; green, IS100); circle 7, G + C content (higher values outward); circle 8, GC bias ((G - C/G + C), khaki indicates values >1, purple <1). Colour coding for genes: dark blue, pathogenicity or adaptation; black, energy metabolism; red, information transfer; dark green, surface associated; cyan, degradation of large molecules; magenta, degradation of small molecules; yellow, central or intermediary metabolism; pale blue, regulators; orange, conserved hypothetical; brown, pseudogenes; pink, phage and insertion sequence elements; pale green, unknown; grey, miscellaneous.
