Table 1.
Association of CGIs with transcription initiation patterns
| Promoters | Enhancers | |||||
|---|---|---|---|---|---|---|
| Type | Overall | CGI | Non-CGI | Overall | CGI | Non-CGI |
| Sharp | 2932 | 525 | 2407* | 91661 | 2307 | 89354* |
| (9.9%) | (17.9%) | (82.1%) | (72.4%) | (2.5%) | (97.5%) | |
| Broad | 26321 | 16734* | 9587 | 28551 | 2297* | 26254 |
| (88.9%) | (63.6%) | (36.4%) | (22.6%) | (8.0%) | (92.0%) | |
Counts of sharp-type and broad-type promoter and enhancer sequences. 345 (1.2%) of 29 598 promoter transcripts and 6358 (5.0%) of 126 570 enhancer transcripts were not classified because of insufficient CAGE tag coverage. *P-values <1.2 × 10−38 computed with Fisher’s exact test.