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. 2007 Apr 13;3(4):e53. doi: 10.1371/journal.pgen.0030053

Figure 5. Phylogenetic Tree of ArsCa Arsenate Reductases in Various Arsenic-Resistant Microorganisms.

Figure 5

The proteins of loci 1 (HEAR3302), 2 (HEAR0500), and 4 (HEAR3207) in cluster with reductases present in acr3-type transporter operons. In H. arsenicoxydans, two of them are, however, associated with an ArsB-type transporter. Protein sequences involved in arsenate reduction were retrieved from the National Center for Biotechnology Information GenBank database (http://www.ncbi.nlm.nih.gov/entrez) and phylogenetic trees were reconstructed from multiple sequence alignments using the neighbor-joining algorithm implemented in ClustalX. The following sequences were used as references: Roseovarius nubinhibens, Xanthobacter autotrophicus, Rhodospirillum rubrum, Bradyrhizobium japonicum, Rhodopseudomonas palustris, Nitrobacter winogradskyi, Nitrobacter hamburgensis, Xanthobacter autotrophicus, Acidovorax sp., Comamonas sp., Rubrivivax gelatinosus, Delftia acidovorans, Azotobacter vinelandii, Rubrivivax gelatinosus, Burkholderia multivorans, Ralstonia metallidurans, Shigella flexneri, Shigella flexneri, Polaromonas naphthalenivorans, Comamonas testosteroni, Burkholderia vietnamiensis, Burkholderia pseudomallei, Burkholderia mallei, Azoarcus sp., Methylobacillus flagellatus, Alcaligenes faecalis, Rhodoferax ferrireducens, Pseudomonas syringae, Pseudomonas putida, Pseudomonas aeruginosa, Shewanella oneidensis, Wolinella succinogenes, Corynebacterium efficiens, Corynebacterium efficiens, Alkalilimnicola ehrlichei, and Chlorobium phaeobacteroides.