Normalized gene expression levels in the wildtype and mutants.

Rescaled expression levels of , , , , and in the wildtype E.coli, single knockout mutants, and the double knockout mutant under anaerobic glucose minimal medium conditions. The data have been rescaled by the mean value of the expression levels in wildtype cells. The mean and standard errors are calculated from the replicates given in the data set GSE1121 of the GEO site www.ncbi.nlm.nih.gov. The values in parentheses are set to zero in computing the EES.