Table 2.

Mutational spectrum of dam strain

lacZ alleleMutation for Lac+reversionNo. of Lac+mutants/108 cells
Wild typedammutHa
CC101AT to CG0.561.520
CC102GC to AT7.3620320
CC103GC to CG0.060.10
CC104GC to TA3.022.611
CC105AT to TA1.080.273
CC106AT to GC0.485.5734
CC107+G42.4287412000
CC108−G15.213085000
CC109−CpG134803ND
CC110+A2.5936.7300
CC111−A16.756500
CC112CCAGG to CTAGG0.7826.9ND
  • a Data from Cupples et al. (2). ND, not determined.