Table 1.
Dataset of ncRNA sequences. A dataset of 6,305 ncRNAs taken from different Database are selected as representatives of the RNA world. These 6,305 ncRNA sequences are classified into two classes: one class covers five kinds of ncRNAs with known structures, and the other class is made up of six kinds of ncRNAs with predicted structures by Vienna RNA package.
| Category | Number | Length (nt) | dG (Kcal/mol) | GC% | ||
| Mean ± SD | Min | Max | ||||
| The sequences with known structures | ||||||
| 5S (1) | 147 | 121 ± 3 | 113 | 135 | -49.97 ± 10.08 | 0.58 ± 0.05 |
| 16S (1) | 647 | 1532 ± 284 | 612 | 2741 | -556.15 ± 156.85 | 0.49 ± 0.08 |
| Intron (1) | 144 | 615 ± 418 | 210 | 2630 | -191.53 ± 99.46 | 0.46 ± 0.11 |
| RNase P (2) | 466 | 332 ± 49 | 189 | 486 | -139.83 ± 35.4 | 0.57 ± 0.09 |
| tRNA (3) | 1272 | 76 ± 5 | 56 | 94 | -29.28 ± 5.31 | 0.58 ± 0.06 |
| The sequences with predicted structures | ||||||
| tmRNA (4) | 140 | 359 ± 30 | 251 | 423 | -117.44 ± 25.45 | 0.47 ± 0.09 |
| 5.8S (4) | 1168 | 146 ± 27 | 29 | 180 | -41.33 ± 11.99 | 0.49 ± 0.06 |
| SRP (4) | 262 | 225 ± 96 | 78 | 339 | -95.71 ± 45.65 | 0.57 ± 0.08 |
| miRNA (4) | 1082 | 89 ± 16 | 55 | 153 | -37.55 ± 8.89 | 0.46 ± 0.08 |
| Guide (4) | 977 | 141 ± 47 | 66 | 459 | -47.69 ± 23.52 | 0.51 ± 0.11 |
| Total | 6305 | 296 ± 445 | 29 | 2741 | -106.93 ± 165.81 | 0.52 ± 0.09 |
(1) Comparative RNA Web Site; (2) RNase P Database; (3) Genomic tRNA Database; (4) Rfam Database.