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. Author manuscript; available in PMC: 2011 Sep 1.
Published in final edited form as: Future Microbiol. 2010 Sep;5(9):1403–1412. doi: 10.2217/fmb.10.90

Figure 2. Genetic arrangement of the tonB gene clusters in Vibrio spp.

Figure 2

(A) The tonB1 operon and surrounding heme uptake genes of Vibrio anguillarum are shown as a representation of Vibrio tonB1 gene clusters. (B) Conserved arrangement of the Vibrio tonB2 gene cluster. (C) The tonB3 gene cluster surrounded by conserved hypothetical proteins is found in several pathogenic Vibrio spp. and other marine organisms, as noted in Table 2.