Selective Strand Annealing and Selective Strand Exchange Promoted by the N-terminal Domain of Hepatitis Delta Antigen *
Journal of Biological Chemistry, ISSN: 0021-9258, Vol: 278, Issue: 8, Page: 5685-5693
2003
- 18Citations
- 10Captures
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Metrics Details
- Citations18
- Citation Indexes18
- 18
- CrossRef16
- Captures10
- Readers10
- 10
Article Description
We have previously shown that the N-terminal domain of hepatitis delta virus (NdAg) has an RNA chaperone activity in vitro (Huang, Z. S., and Wu, H. N. (1998) J. Biol. Chem. 273, 26455–26461). Here we investigate further the basis of the stimulatory effect of NdAg on RNA structural rearrangement: mainly the formation and breakage of base pairs. Duplex dissociation, strand annealing, and exchange of complementary RNA oligonucleotides; the hybridization of yeast U4 and U6 small nuclear RNAs and of hammerhead ribozymes and cognate substrates; and the cis-cleavage reaction of hepatitis delta ribozymes were used to determine directly the role of NdAg in RNA-mediated processes. The results showed that NdAg could accelerate the annealing of complementary sequences in a selective fashion and promote strand exchange for the formation of a more extended duplex. These activities would prohibit NdAg from modifying the structure of a stable RNA, but allow NdAg to facilitate a trans-acting hammerhead ribozyme to find a more extensively matched target in cognate substrate. These and other results suggest that hepatitis delta antigen may have a biological role as an RNA chaperone, modulating the folding of viral RNA for replication and transcription.
Bibliographic Details
http://www.sciencedirect.com/science/article/pii/S002192582086551X; http://dx.doi.org/10.1074/jbc.m207938200; http://www.scopus.com/inward/record.url?partnerID=HzOxMe3b&scp=0037458726&origin=inward; http://www.ncbi.nlm.nih.gov/pubmed/12466279; https://linkinghub.elsevier.com/retrieve/pii/S002192582086551X; http://www.jbc.org/lookup/doi/10.1074/jbc.M207938200; https://syndication.highwire.org/content/doi/10.1074/jbc.M207938200; https://dx.doi.org/10.1074/jbc.m207938200
Elsevier BV
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