Figure 3

Phylogenetic tree of bacterial gatB sequences. Maximum Likelihood based rooted phylogenetic tree of bacterial gatB sequences (See Methods), annotated with bacterial phyla and colored according to the presence or absence of GlnRS and GluRS2 in the genome (see Table 1 for details). The outliers are indicated by an asterisk symbol (clockwise from the root: LIE (sp), MTA (fi); FMA (fi); TPA (sp); BBU (sp); TTR (ht); SSM (sp); SFU (δ); SAT (δ); BPJ (sp); FTE (ba); SRU (ba); BBA (δ); HMR (δ); TID (ht); NDE (ht); PCA (δ) and GLO (δ)). Three-letter bacterium names follow KEGG naming scheme (Additional files 1 and 2). The branch support is calculated using aLRT statistics and only the scores <0.7 are indicated (See Methods).