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• W1771985274 endingPage "5289" @default.
• W1771985274 startingPage "5278" @default.
• W1771985274 abstract "Expression of bovine papillomavirus type 1 (BPV-1) late genes is limited to terminally differentiated keratinocytes in an infected epithelium. We have previously shown that although the BPV-1 late polyadenylation site is functional in nonpermissive cells, a 53-nucleotide (nt) fragment of the late 3' untranslated region acts posttranscriptionally to reduce polyadenylated cytoplasmic RNA levels. This 53-nt fragment does not appear to function by destabilizing polyadenylated cytoplasmic RNA (P. A. Furth and C. C. Baker, J. Virol. 65:5806-5812, 1991). In this study, we used site-directed mutagenesis and deletion analysis to demonstrate that the sequence AAG/GUAAGU, which is identical to the consensus 5' splice site sequence, was both necessary and sufficient for the inhibitory activity of the 53-nt fragment. Furthermore, base pairing between the 5' end of the U1 small nuclear RNA and this 5' splice site-like sequence was shown to be required for the inhibitory activity in vivo. We have also further mapped the human papillomavirus type 16 late 3' inhibitory element (I. M. Kennedy, J. K. Haddow, and J. B. Clements, J. Virol. 65:2093-2097, 1991) to a 51-nt region containing four overlapping sequence motifs with partial homology to 5' splice sites. Mutation of each of these motifs demonstrated that only one of these motifs is required for the inhibitory activity. However, the presence of the other motifs may contribute to the full inhibitory activity of the element. No BPV-1 or human papillomavirus type 16 mRNAs which are spliced by using the potential 5' splice sites present in the viral late 3' untranslated regions have been identified. This suggests that the primary function of these 5' splice site-like sequences is the inhibition of late gene expression. The most likely mechanism of action of these elements is reduction of polyadenylation efficiency, perhaps through interference with 3'-terminal exon definition." @default.
• W1771985274 created "2016-06-24" @default.
• W1771985274 creator A5039260055 @default.
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• W1771985274 creator A5085164213 @default.
• W1771985274 creator A5091686084 @default.
• W1771985274 date "1994-08-01" @default.
• W1771985274 modified "2023-09-27" @default.
• W1771985274 title "Sequences homologous to 5' splice sites are required for the inhibitory activity of papillomavirus late 3' untranslated regions." @default.
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• W1771985274 doi "https://doi.org/10.1128/mcb.14.8.5278" @default.
• W1771985274 hasPubMedCentralId "https://www.ncbi.nlm.nih.gov/pmc/articles/359047" @default.
• W1771985274 hasPubMedId "https://pubmed.ncbi.nlm.nih.gov/8035806" @default.
• W1771985274 hasPublicationYear "1994" @default.
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