Atypical Role for PhoU in Mutagenic Break Repair under Stress in Escherichia coli
Fig 5
PhoU is not substituted by artificial upregulation of σS via arcB or rssB deletions, but is suppressed by deletion of arcA.
(A) Representative data. (B) Data for three-four separate experiments (means ± SEM) showing ratios of the mutation rates (Lac+ colonies / 108 cells plated / day between days 3–5 of experiments such as those in Fig 1A). The wild-type rate is 18.8 Lac+ colonies /108 cells plated / day. Strains: WT, SMR4562; rssB, SMR12566; arcA, SMR12672; arcB, SMR12673; phoU. SMR4953; phoU rssB, SMR19248; phoU arcA, SMR19249; phoU arcB, SMR19250.