Occurrence of phosphate-binding proteins in proteobacteria and their comparison with PstS and PhoX from X. citri.

X. citri PhoX was used as entry for String server and the data of cooccurrence were analysed for building of the table. The presence of orthologs of PhoX and PstS was avaluated in the four branches of proteobacteria branch. To obtain the amino acid sequence identity among the proteins, the sequences of the proteins identified by String server were submitted to BLASTp x X. citri database. The protein identification shows the 3-letter code of the microrganism, KEGG number and the function associated to the putative protein (PBP: phosphate-binding protein; PstS: phosphate-specific transporter).