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Table 3 Breakdown of the false-CRISPRs found in existing collections of CRISPRs

From: Not all predicted CRISPR–Cas systems are equal: isolated cas genes and classes of CRISPR like elements

 

Biswas’ collection [29]

CRISPRBank [30]

CRISPRMap [31]

Total # of CRISPRs

# of clusters

# of singletons

Total # of CRISPRs

# of clusters

# of singletons

Total # of CRISPRs

# of clusters

# of singletons

Tandem repeats

68

20

39

46

22

21

21

11

6

STAR-like elements

14

2

0

18

4

0

12

4

0

Simple repeats

2

0

1

4

1

3

7

1

5

Unknown

78

17

49

123

30

77

58

14

28

Total

162

39

89

191

57

101

98

30

39