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. Author manuscript; available in PMC: 2016 Jun 1.
Published in final edited form as: Metallomics. 2015 Jun;7(6):1011–1022. doi: 10.1039/c4mt00341a

Figure 6. FyuA and TonB-dependent uptake of Cu(II)-Ybt and other non-ferric complexes.

Figure 6

Cell-associated metal-Ybt complexes were measured in E. coli MG1655 strains. (left) Ectopic FyuA expression significantly increased cell-associated metal-Ybt levels but this increase was significantly lower in a tonB-null mutant background. (right) tonB-null mutants exhibited lower cell-associated Ybt complexes over a range of applied media concentrations. Black bars indicate MG1655 pfyuA while white bars indicate MG1655ΔtonB pfyuA. Results are shown as nanomoles, mean ± s.d.; n=3; *P<0.05, **P<0.01 and ***P<0.001.