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Table 4 CRISPR arrays found in safe strains.

From: The genome sequence of E. coli W (ATCC 9637): comparative genome analysis and an improved genome-scale reconstruction of E. coli

 

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

  1. a CAS-E genes proceed array
  2. b IS element occurs within array
  3. Strains are W (ATCC 9637), K-12 (MG1655), B (REL606), and Crooks (ATCC 8739).