Ratios of the responses of lacZ fusion-bearing strains to various conditions and genetic backgrounds (S13–S15 Tables).

WT = wild type, BW25113; OE = overexpression; ΔfruBKA = deletion of the entire fruBKA operon, also called triple mutant, TM. All strains were grown in LB medium to which 0.2% fructose was added, only for the first two entries as indicated. The remaining entries reveal the consequences of the overexpression of specific fru genes or gene combinations on lacZ-fusion gene expression. In no case were the changes significant, suggesting that the presence of fructose in the growth medium or the overexpression (OE) of specific fru genes, or the entire fru operon, did not influence expression of the mtl, gat, or man operons.