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Interplay of tRNA-like structures from plant viral RNAs with partners of the translation and replication machineries.
| Content Provider | Semantic Scholar |
|---|---|
| Author | Giegé, Richard |
| Copyright Year | 1996 |
| Abstract | The surprise was great in the early 1970s when it was shown that valine could be covalently attached to the 3' terminus of the genomic RNA from turnip yellow mosaic virus (TYMV) by valyl-tRNA synthetase (1) and, soon after, that tyrosyland histidyl-tRNA synthetases can aminoacylate the RNAs from brome mosaic virus (BMV) and tobacco mosaic virus (2, 3). The surprise was even greater when it was realized that the sequences and secondary foldings of the anticipated "tRNA" domains deviated markedly from those of canonical tRNAs (reviewed in refs. 4-6; Fig. 1) and that tRNA mimicry was linked with the mandatory presence of pseudoknots, the new type of RNA fold discovered in the tRNA-like domain of TYMV (8) and now found in many other RNAs (9, 10). It was soon conjectured about possible physiological roles of these tRNA-like structures (e.g., refs. 4, 11, and 12). When it was proven that they do not participate in protein synthesis, an easy explanation was to consider tRNA-like structures as insignificant remnants of evolutionary processes, but a more positive viewpoint was to consider them as possible actors during the life cycles of the viruses. On the other hand, the peculiar structural features of tRNA-like structures makes them attractive natural tRNA variants useful for investigating the specificity rules underlying recognition of tRNAs by aminoacyltRNA synthetases (6, 13). |
| Starting Page | 917 |
| Ending Page | 918 |
| Page Count | 2 |
| File Format | PDF HTM / HTML |
| Alternate Webpage(s) | http://www.pnas.org/content/93/22/12078.full.pdf |
| PubMed reference number | 8901535v1 |
| Volume Number | 93 |
| Issue Number | 22 |
| Journal | Proceedings of the National Academy of Sciences of the United States of America |
| Language | English |
| Access Restriction | Open |
| Subject Keyword | Brome mosaic virus Bromus DNA Replication Genetic Translation Process Mandatory - HL7DefinedRoseProperty Mosaic Organism Mosaic Viruses New type Published Comment RNA Rule (guideline) Tobacco Mosaic Virus Turnip yellow mosaic virus Valine Valine-tRNA Ligase histrelin |
| Content Type | Text |
| Resource Type | Article |