Table 1

NrrF-mediated regulation of the Sdh operon

Locus tagAnnotationFold change in expression (Fe−/Fe+)aHalf-life (min)b
FA1090nrrF mutantFA1090nrrF mutant
NGO0923sdhC−9.4 ± 2.6−3.8 ± 1.11.2 ± 0.21.5 ± 0.2
NGO0922sdhD−10.2 ± 2.3−3.3 ± 0.91.4 ± 0.22.1 ± 0.4
NGO0921sdhA−7.1 ± 2.1−3.9 ± 0.51.3 ± 022.7 ± 0.5c
NGO0920sdhB−6.7 ± 2.6−3.0 ± 0.91.3 ± 0.22.5 ± 0.6c
  • a qRT-PCR data from the 3-h microarray samples. Values reported are means for three experiments ± SEM. For fold change ratios of <1, the reciprocal was taken and a minus sign added.

  • b Half-lives were measured in Fe− medium. Values reported for each gene are means of at least two measurements ± SEM.

  • c P, <0.05 for comparison of the nrrF mutant to FA1090.