Table 1.
Phylogenetic distribution of the posttranscriptional modifications identified in RNAs
| Source | |||
|---|---|---|---|
| Archaea | (eu)Bacteria | Eukarya | |
| tRNA | 37 | 42 | 47 |
| rRNA | 1a | 4a | |
| LSU | 12 | 8 | 18 |
| SSU | 8 | 14 | 12 |
| 5S | 3 | 1 | |
| 5.8S | 5 | ||
| mRNA | 13 | ||
| tmRNA | 2 | ||
| snRNA | 11 | ||
| chromosomal RNA | 2 | ||
| other small RNA | 1 |
subunit is not designated or reported as mixture of LSU and SSU rRNAs. tRNA: transfer RNA; rRNA: ribosomal RNA; LSU: Large Subunit; SSU: Small Subunit; mRNA: messenger RNA; tmRNA: transfer-messenger RNA; snRNA: small nuclear RNA.