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Fig. 3 | BMC Genomics

Fig. 3

From: The sulfur/sulfonates transport systems in Xanthomonas citri pv. citri

Fig. 3

Phylogenetic analysis of the X. citri Sbp, SsuA1 and SsuA2 and their relationship with orthologs identified in different microorganisms. The list of proteins and their reference codes at NCBI are described in Additional file 2: Table A2. Proteins were classified essentially in four groups as the following: Group I (yellow) for sulfate and thiosulfate-binding proteins (Sbp and CysP); Group II (green) for taurine-binding proteins (TauA); Group III (blue) for alkanesulfonate and sulfate ester binding proteins that show higher sequence similarity with the ortholog of X. citri SsuA1; and Group IV (red) for alkanesulfonate binding proteins, which best represented by SsuA from E. coli and SsuA from X. citri. The putative sulfonate-binding protein from Methylobacillus flagellates KT, which had its three-dimensional structure solved (PDB code 3UIF), was classified in a separate branch (black lines with asterisk) together with its paralog. The tree was generated with the Neighbor-Joining Method (1000 bootstrap) using the MEGA program version 5 [33]. X. citri proteins and E. coli TauA were underlined in each group, as a reference

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