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Table 1 Mutation rates and frequencies under different conditions in E. coli ATCC 31343

From: Occurrence of leu+ revertants under starvation cultures in Escherichia coli is growth-dependent

Media

Time

Mutations

Viable cells

Mutation rates

Mutation frequencies

LB

1 day

leu +

1.31 × 109

1.91 × 10-10

2.65 × 10-9

LB

1 day

pro +

1.24 × 109

1.41 × 10-10

6.57 × 10-9

LB

1 day

lac +

1.26 × 109

2.45 × 10-10

9.86 × 10-9

MM+P

1 day

leu +

7.56 × 107

5.73 × 10-9

3.02 × 10-7

MM+L

1 day

pro +

4.89 × 107

3.07 × 10-9

2.78 × 10-7

CM(Lac)

1 day

lac +

8.34 × 107

3.60 × 10-9

2.90 × 10-7

MM+P

3 days

leu +

2.13 × 107

1.72 × 10-8

1.11 × 10-6

MM+L

3 days

pro +

1.09 × 107

4.06 × 10-8

1.79 × 10-6

CM(Lac)

3 days

lac +

3.61 × 107

1.47 × 10-8

1.18 × 10-6

  1. The initial number of cells in the cultures were all 1.08 × 108 cells/ml.