Table 2.
The classification of novel peptides in relation to annotated genes
| Peptide category | Mapped in NCBI & Ensembl | NCBI peptides | Ensembl peptides | Total peptides |
|---|---|---|---|---|
| Intergenic | 87 208 (81.6) | 3949 (3.7) | 15 735 (14.7) | 106 892 |
| Intron | 17 823 (59.0) | 8844 (29.3) | 3563 (11.8) | 30 230 |
| Transcript (noncoding) | 83 (1.5) | 5255 (92.0) | 376 (6.6) | 5714 |
| Coding out of frame | 2572 (58.5) | 1471 (33.5) | 351 (8.0) | 4394 |
| N-ter extension | 1543 (63.9) | 589 (24.4) | 284 (11.8) | 2416 |
| C-ter extension | 1275 (66.9) | 467 (24.5) | 164 (8.6) | 1906 |
| 5′ UTR | 0 (0) | 0 (0) | 2058 (100.0) | 2058 |
| 3′ UTR | 3 (0.3) | 27 (2.6) | 991 (97.1) | 1021 |
| 5′ exon extension | 20 (1.1) | 1740 (92.9) | 112 (6.0) | 1872 |
| 3′ exon extension | 10 (1.3) | 685 (92.1) | 49 (6.6) | 744 |
| Total: | 110 537 | 23 027 | 23 683 | 157 247 |
Novel peptides that mapped to a single genomic location were assigned categories based upon their relation to annotated gene models from NCBI and Ensembl, and the number of peptides in each category is reported with its proportion of the total in parentheses. Note that peptides can be classified differently between NCBI and Ensembl due to differences in annotation between these two resources. (All peptides included in this study were identified with an E-value of ≤0.01).