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. 2011 Aug 18;7(8):e1002191. doi: 10.1371/journal.ppat.1002191

Figure 3. Salmonella bongori harbours a novel and phylogenetically distinct T6SS.

Figure 3

A. Schematic representation of the SPI-22 T6SS locus. Coding sequences are represented as blocked arrows showing the direction of their transcription. Conserved core T6SS components are represented with a different color. B. DNA-based comparison of the T6SS encoded in SPI-22 and the CTS2 locus of Citrobacter rodentium strain ICC168. The analysis was performed by TBLASTX with WebACT and visualized with ACT software. C. Evolutionary relationships of Salmonella T6SS loci. A distance tree (neighbour-joining) was calculated from concatenated VipA and VipB protein sequences of previously identified T6SS gene clusters, including the novel SPI-22 T6SS locus. Each of the four major phylogenetic groups is shown in the nodes labeled A to D. Bootstrap support values (% from 3,000 replicates) were: A, 99%; B, 80%; C, 99% and D, 99%. For brevity species or serovar names are used only.