Multiple amino acid sequence alignment of PriB homologs.

<p>Amino acid sequences of <i>Klebsiella pneumoniae</i> PriB (GenBank ID:YP_001338213), <i>Pectobacterium carotovorum</i> PriB (GenBank ID:C6DE14), <i>Yersinia ruckeri</i> PriB (GenBank ID:ZP_04617249), <i>Salmonella enterica</i> PriB (GenBank ID:AAL23212), <i>Escherichia coli</i> PriB (GenBank ID:NP_418622), and <i>Neisseria gonorrhoeae</i> PriB (GenBank ID:YP_207725) were aligned using the program ClustalX <a href="http://www.plosone.org/article/info:doi/10.1371/journal.pone.0024494#pone.0024494-Thompson1" target="_blank">[15]</a>. Amino acid residues that are identical in at least five of the six aligned PriB proteins are highlighted in blue.