Distribution of eDNase genes in <i>C</i>. <i>jejuni</i> genome sequences.

<p>The Venn diagram shows the distribution of the eDNase genes <i>dns</i> (<i>cje0256</i>), <i>cje0566</i> and <i>cje1441</i> in the genome sequences of 1630 eDNase gene-positive <i>C</i>. <i>jejuni</i> strains (<a href="http://www.plosone.org/article/info:doi/10.1371/journal.pone.0121680#pone.0121680.t002" target="_blank">Table 2</a>). Most genomes (1248 of 1630) only have a single eDNase gene, 357 genomes have two eDNase genes, while only 25 genomes, including <i>C</i>. <i>jejuni</i> RM1221, contain all three eDNase genes. The Venn diagram is encircled by the RM1221 chromosome showing open reading frames (blue), CJIE1–4 insertion elements (red), and the position of the three eDNase genes (black). Finally, the bottom part shows an amino acid sequence alignment of the Dns, CJE0566 and CJE1441 proteins, with the signal sequence and Pfam domains indicated. Signal sequences were predicted using PSORTb version 3.0.2.