Function
Under iron limitation, RipA negatively controls the expression of the acn (aconitase), catA (catechol 1,2 dioxygenase), leuCD (isopropylmalate dehydratase), narKGHJI (nitrite/nitrate transporter and nitrate reductase), sdhCAB (succinate dehydrogenase), pta (phosphotransacetylase) and katA (catalase) genes. Binds to the consensus sequence in the promoter region.
Sequence
MSSASLLWCHSGVSTVRFGERIFTLVAGDLLFAPEEAQVADDSQGLVLNIRFETLNIMGPARRIHLGHVWNDRLTFEYSRSLFGKETLSPDIARLFTDRVPTPPLPAPRKARAVAQVLVSNPADQTSLEEFAEIQGVSARTLQRQFLKSTGYSFSEWRAAQRVCVAASLLAHDFSISVVANLVGFAATSSLTRAFRRHTGATPSTFTTGQIGMGSAGHPPRIPATTTFAEAHQDQQLWIYSGTATVTTPGYCRFMGQGDMVTIPAGTQTRIDVAAGSIAFPVPVGLDEWGMDLTRVVAVNNQQPKPLTILEQSEWSKLSEELLNTPVPVQM