FIG. 1.
RNase protection assays confirm temperature stress microarray analysis. Fifty micrograms of RNA from strain JRS4 that was grown to early log phase at 37°C (lane 1) and then shifted to 40°C for 5 min (lane 2), 10 min (lane 3), or 20 min (lane 4) was hybridized to [α-32P]UTP-labeled groEL (A), ctsR (B), clpC (C), purC (D), and ska (E) probes. Lane 5 contains a size marker. Arrows indicate the band of the size expected for the hybridization product with each probe.