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HupY affects intracellular iron concentrations. Shown is growth (20 h) of NZ131 wild-type (blue), ΔhupY mutant (red), and complemented (ΔhupY/pLC007 [gray]) strains in THYB or in THYB containing streptonigrin. The data are from two independent experiments done in technical triplicates, with SD shown. The asterisk indicates significance (P < 0.05, Student’s t test, equal variance).
