Table 2.
Properties of ENACE CDS exons (including 6 ENACE identifications).
| Cassette-on exons | |
| No. of exons identified | 692 |
| Average length (bp) | 86 |
| Median length (bp) | 63 |
| Average number of supporting ESTs | 1.3 |
| Average sequence identity with the counterpart (%) | 89 |
| Retained introns | |
| No. of exons identified | 66 |
| Average length (bp) | 766 |
| Average length of retained intron (bp) | 115 |
| Average number of supporting ESTs | 1.1 |
| Average sequence identity with the counterpart (%) | 86 |
| No. of initial exons1 | 17 |
| No. of terminal exons2 | 19 |
| No. of single-exon transcripts3 | 6 |
The retained introns connect 1 the first and the second (or 2 the last and the second last) coding exons of the original transcripts. 3 The retained introns connect the exons of originally two-exon transcripts to make single-exon transcripts.