Table 3

Viability loss in various mutants after methyltransferase induction

Viability (relative)

E. coli strain

0% arabinose

0.0002% arabinose

rec⁺

2.5, 2.3

1.9, 0.92

ΔrecA

1.3, 1.7

0.45, 0.31

ΔrecBC

1.3, 1.2

0.43, 0.59

lexA(Ind^-)malF^-

3.1, 2.5

0.21, 0.15

malF^-

2.1, 2.1

0.85, 0.88

lexA(Def)sulA^-

2.1, 2.0

0.96, 0.99

sulA^-

2.1, 2.0

1.4, 1.2

mutS^-

2.0, 1.8

1.4, 1.2

Viability of several mutant E. coli strains after induction of PvuII methyltransferase was measured. The number of viable cells was monitored 30 minutes after addition of the lower concentration (0.0002%) of arabinose in two independent experiments. Each value was divided by the value at time zero.

Fukuda et al. Genome Biology 2008 9:R163   doi:10.1186/gb-2008-9-11-r163