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Table 3 Comparison of predicted clustered and non-clustered constitutive A-to-I sites

From: Prediction of constitutive A-to-I editing sites from human transcriptomes in the absence of genomic sequences

A

 

A-to-I conversions

A-to-Is in H9 and HeLa

Numbers of validated sites

Clustered sites

2,245

296

22 of 22

Non-clustered sites

10,220

1,542

7 of 15

B

Predicted A-to-I sites

Predicted A-to-I ratios

Validation

Chr. location

Altered base

Gene location

H9

HeLa

H9

HeLa

chr1:40041484

A- > G (+)

Coding

28.1%

29.5%

chr4:184186228

A- > G (+)

Coding

30.8%

28.1%

chr6:159187882

A- > G (+)

3UTR

46.2%

50%

chr7:44841489

A- > G (+)

3UTR

78.4%

69.2%

+

+

chr8:48890109

A- > G (+)

3UTR

29.6%

32.5%

+

+

chr10:75008955

A- > G (−)

3UTR

59.5%

65.8%

+

+

chr17:4068050

A- > G (+)

3UTR

31.8%

31.7%

chr17:61898921

A- > G (−)

Coding

27.5%

16.9%

+

+

chr17:80445942

A- > G (+)

Coding

34.4%

32.1%

chr19:10755103

A- > G (−)

3UTR

95.3%

96.7%

chr19:34718735

A- > G (+)

3UTR

46.5%

27.9%

+

+

chr19:39874895

A- > G (+)

3UTR

36.1%

38.9%

chr20:30253695

A- > G (+)

3UTR

20.0%

29.9%

chrX:54589730

A- > G (+)

3UTR

30.0%

46.3%

+

+

chrX:54589774

A- > G (+)

3UTR

6.9%

8.8%

+

+

  1. (A) Comparison of clustered and non-clustered constitutive A-to-I sites identified with or without STEP4 cutoff. Editing sites detected in HeLa and H9 cells were further used for validation with Sanger sequencing. (B) Validation results of randomly selected non-clustered A-to-I editing sites. “+”, validated to be an editing site; “-”, validated not to be an editing site.