Selected examples of gene expression profiles Selected examples of gene expression profiles.A, expression profiles of lacZ, trxA, and fur control genes. Selected examples of gene expression profiles.A, expression profiles of lacZ, trxA, and fur control genes. B, typical examples of expression profiles of three up-regulated genes: entC, involved in enterobactin biosynthesis; sodA, manganese-superoxide dismutase; and sdhB, succinate dehydrogenase (iron/sulfur protein). C, typical examples of expression profiles of three down-regulated genes: katE, hydroperoxidase; ybdR, putative oxidoreductase; and ftn, cytoplasmic ferritin. A.U., arbitrary units. Errors bars represent the S.D. of two independent measurements of gene expression. Nadia Abed et al. Mol Cell Proteomics 2007;6:2110-2121 © 2007 The American Society for Biochemistry and Molecular Biology