A NJ phylogenetic tree highlighting the position of S. stibiiresistens SB22T with other completely sequenced strains that belong to the same family (Rhodospirillaceae). All protein FASTA files were obtained from NCBI. The corresponding GenBank accession numbers are displayed in parentheses. A total of 515 conserved proteins were identified using cluster algorithm tool MCL. The 515 amino acid sequences were aligned using Clustal W  and the NJ tree was built using MEGA 5.05  with boot strap value of 1,000.