Cited by 14RNA Research and SplicingRNA and protein synthesis mechanismsRNA regulation and disease

U1snRNP-mediated suppression of polyadenylation in conjunction with the RNA structure controls poly (A) site selection in foamy viruses

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Schrom, Eva-Maria, Moschall, Rebecca, Hartl, Maximilian J, Weitner, Helena, Fecher, David, Langemeier, Jörg, Bohne, Jens, Wöhrl, Birgitta M +1 more·2013·Retrovirology

Abstract

Background: During reverse transcription, retroviruses duplicate the long terminal repeats (LTRs). These identical LTRs carry both promoter regions and functional polyadenylation sites. To express full-length transcripts, retroviruses have to suppress polyadenylation in the 5′LTR and activate polyadenylation in the 3′LTR. Foamy viruses have a unique LTR structure with respect to the location of the major splice donor (MSD), which is located upstream of the polyadenylation signal. Results: Here, we describe the mechanisms of foamy viruses regulating polyadenylation. We show that binding of the U1 small nuclear ribonucleoprotein (U1snRNP) to the MSD suppresses polyadenylation at the 5′LTR. In contrast, polyadenylation at the 3′LTR is achieved by adoption of a different RNA structure at the MSD region, which blocks U1snRNP binding and furthers RNA cleavage and subsequent polyadenylation. Conclusion: Recently, it was shown that U1snRNP is able to suppress the usage of intronic cryptic polyadenylation sites in the cellular genome. Foamy viruses take advantage of this surveillance mechanism to suppress premature polyadenylation at the 5’end of their RNA. At the 3’end, Foamy viruses use a secondary structure to presumably block access of U1snRNP and thereby activate polyadenylation at the end of the genome. Our data reveal a contribution of U1snRNP to cellular polyadenylation site selection and to the regulation of gene expression.

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Crossref · 10.1186/1742-4690-10-55

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  • In both HIV-1 and foamy viruses, the primary factor in splice-site-mediated suppression is the binding of U1 snRNP to the major splice donor site.

    “Furthermore, in both HIV-1 and foamy viruses, the primary factor in splice-site-mediated suppression is the binding of U1 small nuclear ribonucleoprotein (U1 snRNP), part of the spliceosome complex, to the major splice donor site (Ashe et al. 1995, 1997, 2000, Schrom et al. 2013).”

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  1. Coffin JM Hughes SH Varmus HE 1997 Retroviruses Cold Spring Habor Laboratory Press 21433340

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Authors
Schrom, E.-M., Moschall, R., Hartl, M. J., Weitner, H., Fecher, D., Langemeier, J., Bohne, J., Wöhrl, B. M., & Bodem, J.
Affiliations
  • University of Würzburg (DE)
  • University of Bayreuth (DE)
  • Medizinische Hochschule Hannover (DE)
Corresponding author
Bodem, Jochen
Venue
Retrovirology
Published
2013-05-29
Volume
10
Issue
1
Pages
55-55
ISSN
1742-4690 (ISSN-L)
OpenAlex
W2134714431
Cited by
14
References
50
Citations by year
2025: 3 · 2022: 1 · 2020: 1 · 2019: 1 · 2018: 1 · 2017: 1 · 2016: 2 · 2015: 2 · 2014: 1 · 2013: 1
FWCI
0.90
Type
journal article
Language
en
Open access
Licence
cc-by
Locations
  • Retrovirology (publishedVersion, cc-by)
  • Europe PMC (PubMed Central) (publishedVersion, cc-by)
  • PubMed Central (publishedVersion, cc-by)
  • PubMed (publishedVersion)
  • Online Publication Service of Würzburg University (Würzburg University) (submittedVersion, cc-by)
Funders
Deutsche Forschungsgemeinschaft (Wo630/7-3)
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › RNA Research and Splicing
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › RNA and protein synthesis mechanisms
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › RNA regulation and disease
Keywords
polyadenylation site selection, poly(A) site, foamy virus, long terminal repeat, RNA secondary structure, 5' LTR, 3' LTR, RNA cleavage
MeSH terms
Animals, Cell Line, Cricetinae, Nucleic Acid Conformation, Poly A, RNA, Small Nuclear, RNA, Viral, Spumavirus, Terminal Repeat Sequences, RNA Splice Sites, Polyadenylation, RNA 3' Polyadenylation Signals

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