The S. Typhimurium ferritins are differentially regulated Previous studies in E. coli have shown that Fur positively regulates bfr expression under Fe-replete conditions .
Thus , the S. Typhimu-rium bfr are positively regulated by Fe in a Fur-dependent manner , accounting for reduced total Fe in the fur mutant .
Similar to the S. Typhimurium bfr are activated by Fe in a Fur-dependent manner , most likely via Fur-mediated repression of RyhB .
Similar to the S. Typhimurium bfr are activated by Fe in a Fur-dependent manner , most likely via Fur-mediated repression of the small RNA .