Comparative Genomic Hybridization Analysis of Yersinia enterocolitica and Yersinia pseudotuberculosis Identifies Genetic Traits to Elucidate Their Different Ecologies

Figure 2

Phylogenetic relationships of type VI secretion systems (T6SSs) in Yersinia pseudotuberculosis and T6SSs of other species were compared to evaluate the different types of T6SS. VipA sequences were used to represent T6SS and the alignment of 206 VipA proteins is shown here as an unrooted phylogenetic tree visualized by BioNJ. Type VI secretion systems of Y. pseudotuberculosis named YPTB 1–5 belong to three distinct branches of T6SSs. T6SSs of Vibrio cholerae, Pseudomonas aeruginosa, and Burkholderia thailandensis (BTHAI 1–6) are marked on the branches of the phylogenetic tree and the one VipA/T6SS present in Y. enterocolitica is also shown.