Table 1.
Characteristics of miRNA hairpins in various taxonomic groups.
| HP | LP | MIR | EXT | PRI | |
| Mean | |||||
| Vertebrates | 86.7 | 7.3 | 22.0 | 5.0 | 12.6 |
| Invertebrates | 91.8 | 7.9 | 22.2 | 5.8 | 13.8 |
| Plants | 119.5 | 6.8 | 21.3 | 22.8 | 12.5 |
| Std. Dev. | |||||
| Vertebrates | 13.8 | 3.5 | 0.9 | 3.4 | 7.0 |
| Invertebrates | 13.1 | 3.9 | 1.3 | 4.5 | 5.9 |
| Plants | 43.2 | 3.7 | 1.0 | 18.5 | 9.9 |
| Minimum | |||||
| Vertebrates | 55 | 3 | 16 | 0 | 0 |
| Invertebrates | 54 | 3 | 18 | 0 | 0 |
| Plants | 57 | 3 | 16 | 0 | 0 |
| Maximum | |||||
| Vertebrates | 153 | 22 | 26 | 34 | 50 |
| Invertebrates | 215 | 30 | 28 | 55 | 32 |
| Plants | 337 | 35 | 24 | 102 | 78 |
HP: Hairpin length; LP: Loop length; MIR: MiRNA length; EXT: Distance of miRNA duplex from end of loop; PRI: Length of extension from end of miRNA to end of precursor. The list of organisms used for this Table is provided as Supplementary Data.