mRNA is the transitional molecule between the DNA gene sequence and mRNA translation into protein. The other types of RNAs are not translated into proteins, but are involved in the regulation of gene expression.
| Name | Abbreviation | Percentage amount in the cell |
|---|---|---|
| Messenger RNA | mRNA | 1-5% |
| Ribosomal RNA | rRNA | 80-85% |
| Transfer RNA | tRNA | 15-20% |
| Small nuclear RNA | snRNA | |
| Nucleolar RNA | snoRNA | |
| Small RNA |