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conserved cysteines of the membrane protein DsbD are required for the transfer of electrons from the cytoplasm to the periplasm of Escherichia coli . EMBO J 1999, 18:5963–5971.PubMedCrossRef 23. Porat A, Cho SH, Beckwith J: The unusual transmembrane electron transporter DsbD and its homologues: a bacterial family of disulfide reductases. Res Microbiol 2004, 155:617–622.PubMedCrossRef 24. Ito K, Inaba K: The disulfide bond formation (Dsb) system. Curr Opin Struct Biol 2008, 18:450–458.PubMedCrossRef Competing interests The authors declare that they have no competing interests. Authors’ contribution CF, JWAA and MSMJ conceived of the study. DRS sequenced and analyzed the genomic data of Brocadia. CF built the datasets and ran homologue searches. DRS, JR, JTMK, and HJMOC assisted in bioinformatics analysis and data interpretation. CF, JWAA, and MSMJ wrote the manuscript with input from all co-authors. All authors read and approved the final manuscript.”
“Background Salmonella enterica subspecies enterica serovar Typhimurium is one of the most prevalent serovars isolated from ill humans in Mexico, with swine being the most common food-animal reservoir [1].