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. 2017 Aug 29;5(3):52. doi: 10.3390/microorganisms5030052

Figure 3.

Figure 3

PerR and Fur regulation in S. xylosus C2a. (a) Classic model of PerR and Fur repression of antioxidant response and iron uptake; (b) Impact of reactive nitrogen species (RNS) and reactive oxygen species (ROS), which compete with Fe(II) for PerR and Fur binding, cause antioxidant response and iron uptake.