Table 4

CRISPR arrays found in safe strains.

CRISPR array

2.1

2.2

2.3

4.1-2


W

16a

3

11

2

K-12

14a

3

7

2

B

5

3

14

2

Crooks

22a

3

29b

4


a CAS-E genes proceed array

b IS element occurs within array

Strains are W (ATCC 9637), K-12 (MG1655), B (REL606), and Crooks (ATCC 8739).

Archer et al. BMC Genomics 2011 12:9   doi:10.1186/1471-2164-12-9

Open Data