In detail, first, we could not find evidence of GRs (including σ 38 ) and (p)ppGpp being material in the global mid-term behaviour (although (p)ppGpp may be significant in the short-term response).
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The transcription factor network of E. coli steers global responses to shifts in RNAP concentration.
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The sentences
This could explain why, when plotting |LFC| against the RNAP concentration, there is a weak trend towards increased slope with K TF ( Supplementary Figures S20C and S21 ).