Genome-wide transcriptional effects of glucose in CRP* strain PC05, presented as expression ratios for individual genes showing significant differential expression in the presence and absence of glucose (CRP* G/CRP*). a) 80 genes show significant changes in expression level for strain PC05. Only 29 are upregulated. b) The changes in expression levels of the same genes shown in (a) for strain W3110, in response to glucose. Gene names and expression levels are given in supplementary Table S3 (see Additional file 3).