Probe signals across significantly scoring HspR target regions using the Sco-Chip2-v2 array. (a) the dnaK operon, (b) the clpB (SCO3661) operon, (c) the lon gene (SCO5285), (d) the rrnD ribosomal RNA operon and (e) the tRNAGln/Glu cluster. The anti-HspR-enriched probes are plotted on a linear scale (red), the heat-shock expression ratio at 42°C versus 30°C is plotted in log2 scale (blue), and the expression ratio of the hspR disruption mutant versus wild-type is plotted in log2 scale (green). Open circles indicate the start co-ordinate (relative to genome sequence) of each probe that passed quality control filtering. The genetic organization of each region is indicated below the plot; each arrow represents a coding sequence or stable RNA gene as defined in [EMBL:AL645882.2].