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Table 2 hPRL periplasmic secretion level in E. coli W3110, at different temperatures utilizing a vector containing (phPRL-DsbA-cIts -λPL) and one not containing (phPRL-DsbA-λPL) the repressor gene.

From: Human Prolactin (hPRL) and Growth Hormone (hGH) distinct behavior under bacteriophage lambda PL promoter control

temperature phPRL-DsbA-λPL+ pRK-248 cIts (μg/mL/A600 ± SD) phPRL-DsbA-λPL(μg/mL/A600± SD) Statistical significance a
30°C 0.001 (n = 1) 0.14 ± 0.02 (n = 6) -
35°C - 0.73 ± 0.07 (n = 5) P < 0.001
37°C 0.03 (n = 1) 0.92 ± 0.10 (n = 6) P < 0.01
39°C - 0.60 ± 0.12 (n = 8) P < 0.001
42°C 0.02 (n = 1) 0.19 ± 0.05 (n = 4) P < 0.001
  1. a Student's T-test comparing each value to the previous one