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. Author manuscript; available in PMC: 2015 Apr 1.
Published in final edited form as: J Inorg Biochem. 2014 Jan 22;133:110–117. doi: 10.1016/j.jinorgbio.2014.01.007

Figure 4.

Figure 4

Fur- and RyhB-mediated regulation of iron-regulated genes. In iron-replete conditions, Fur represses genes for iron transport systems, including feo and ent genes, and the small non-coding RNA, RyhB. RyhB expression results in reduced levels of proteins such as aconitase and SodB that contain iron or iron-sulfur clusters. Thus, Fur and RyhB function together to balance the demands for iron in the cell.