Figure 2

A typical image generated by GenomeViz. From outside to inside: Listeria monocytogenes COG categories (two circles), horizontally transferred gene categories in L. monocytogenes identified using SIGI (two circles), mean centered GC% of L. monocytogenes genes (red-above mean, blue-below mean, one circle), GC% gradient (red-high GC%, green-low GC%, one circle), Listeria innocua COG categories (two circles), horizontally transferred gene categories in L. innocua identified using SIGI (two circles), mean centered GC% of L. innocua genes (red-above mean, blue-below mean, one circle), GC% of L. innocua genes shown as a line graph (innermost circle). When created in GenomeViz, this image is fully interactive and any plotted circle may be queried. It also shows the different ways in which qualitative or numerical data may be plotted. Differences in the horizontally transferred genes in the two Listeria species may be examined and related to GC content in the region.