TABLE 4.

Survival and mutation after treatment with 8.6 J/m2 UV light

StrainMean survival fraction ± SDNo. of colonies (108)/viable cell (mean ± SD)
StreprRifr
Wild type0.79 ± 0.1711.7 ± 3.129.6 ± 9.3
lexA(S130A) mutant0.67 ± 0.28aa
ΔSACOL19550.72 ± 0.1611.4 ± 4.333.4 ± 12.6
ΔSACOL14000.83 ± 0.200.38 ± 1.3a
  • a —, no measurable induced mutation.