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Table 1 Statistics of detected promoters and retrotransposon family classification provided by RepeatMasker (RM)

From: Subtype classification and functional annotation of L1Md retrotransposon promoters

Retrotransposons annotated by RM

Type A promoters

Type G promoters

Type T promoters

Family

Count

Count

RM %

p. %

Count

RM %

p. %

Count

RM %

p. %

L1MdA

40,139

6507

16.2

87.3

329

0.8

14.4

184

0.5

3.6

L1MdG

5096

189

3.7

2.5

813

16.0

35.7

248

4.9

4.9

L1MdT

9287

109

1.2

1.5

29

0.3

1.3

3447

37.1

67.4

L1MdF

70,753

453

0.6

6.1

1069

1.5

46.9

1149

1.6

22.5

Others

–

196

–

2.6

39

–

1.7

85

–

1.7

  1. For each detected promoter, its overlap with current annotation of RM was searched. The overlaps were listed in this table with percentage of the corresponding retrotransposons (RM %) and percentage of the corresponding promoter type (p. %). Because not all L1 elements have a promoter, the sum of RM % for each row is not 100