FIG 2.

Gene expression profiling based on functional categories. (a) Comparison of the mean SfGFP number, ${\eta }_{\text{int,promoter}}^2$, and NTR between promoter subgroups of 27 functional categories using a single-sided Wilcoxon rank-sum test. Numbers in brackets following functional category names represent total number of genes in the corresponding category. Test was conducted by comparing all the <G>, ${\eta }_{\text{int,promoter}}^2$, or NTR values in a functional category of interest with the rest of the values in the library. Red or blue colors indicate that the median <G> or NTR values of all reporters in the category of interest are larger (red) or smaller (blue) than the median <G> or NTR values in all other categories as one group. Bar color is based on the P value of the test. (b and c) Comparison of the NTR between promoters of core essential genes (orange dots) and other genes (gray dots) in PAO1.