Table 1.
Representative non-coding RNAs and their functions.
| Size | Name | Functions |
|---|---|---|
| Small (~20 nt) | miRNAs siRNA piRNAs |
Degradation or translation repression of target mRNAs Degradation of target mRNAs Repression of reproductive cell-specific gene expression |
| Intermediate (20~200 nt) | snoRNAs snRNAs |
rRNA modification RNA splicing |
| Long (200 nt~) | HOTAIR XIST TSIX |
Maintaining inactive chromatin as scaffold by repressing genes including HOXD genes X-chromosome inactivation Repression of XIST (antisense transcript of XIST) |