Biology:Vg1 ribozyme
| Manganese dependent ribozyme in Vg1 mRNA | |
|---|---|
 Secondary structure of the VG1 ribozyme. | |
| Identifiers | |
| Symbol | VG1 |
| Rfam | RF01865 |
| Other data | |
| RNA type | Ribozyme |
| Domain(s) | Xenopus |
| PDB structures | PDBe |
The Vg1 ribozyme is a manganese dependent RNA enzyme or ribozyme which is the smallest ribozyme to be identified. It was identified in the 3′ UTR of Xenopus Vg1 mRNA transcripts and mouse beta-actin mRNA.[1] This ribozyme was identified from in vitro studies that showed that the Vg1 mRNA was cleaved within the 3′ UTR in the absence of protein. Studying the Vg1 mRNA 3′UTR a manganese-dependent ribozyme was predicted to exist. This ribozyme was shown to be located adjacent to the polyadenylation site and in vitro studies showed that it catalyzes a first-order reaction where its mechanism of cleavage is similar to the manganese ribozyme present in Tetrahymena group I introns.[2]
In vivo studies showed that this ribozyme is not functional with the cell.[1]
References
- ↑ 1.0 1.1 "A manganese-dependent ribozyme in the 3′-untranslated region of Xenopus Vg1 mRNA". Nucleic Acids Res. 36 (17): 5530–5539. October 2008. doi:10.1093/nar/gkn530. ISSN 0305-1048. PMID 18753150.
- ↑ "A Mn2(+)-dependent ribozyme". Science 248 (4955): 585–588. May 1990. doi:10.1126/science.2185542. PMID 2185542. Bibcode: 1990Sci...248..585D.
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