It is an effector of the iron sparing response , and acts to down - regulate iron - containing proteins in times of poor iron bioavailability .
FsrA is a small RNA found in Bacillus subtilis .
FsrA is an effector of the iron sparing response , and acts to down - regulate iron - containing proteins in times of poor iron bioavailability .
FsrA is a small RNA found in Bacillus subtilis .