Figure 4
From: Distinct co-evolution patterns of genes associated to DNA polymerase III DnaE and PolC
Hierarchical clustering of occurrence proportion vectors of B. subtilis essential genes in clades of the domain Bacteria. Squares show the proportion of a phylum (ascending from white to black) having an occurrence of a gene. The dendogram depicts distances between the proportion vectors. This dendogram separates B. subtilis essential genes into three clusters. The first one (red) contains dnaE and corresponds to genes occurring in the majority of bacterial clades. The second one (blue) contains dnaA and spans the whole domain of bacteria. The last one (green) contains polC and is composed of genes essentially specific to Firmicutes. The computing and visualization of the clusters was performed using the JMP® software (SAS Institute, Cary, NC).