Table 2.

Comparison of steady-state levels of wild-type and mutantglpD leader-lacZ mRNA in E. coliMC4100D1 and MC4100D2 at different temperaturesa

PlasmidMC4100D1/MC4100D2 ratio
32°C37°C42°C
None11.01.1
pHP1311.01.1
pPHis111.10.8
  • a Relative amounts of mRNA were calculated from Fig. 3.