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| Content Provider | World Health Organization (WHO)-Global Index Medicus |
|---|---|
| Author | Manley, J. L. Lewis, E. D. |
| Abstract | Most eukaryotic messenger RNAs are transcribed as precursor molecules that must be processed by capping, splicing, 3' cleavage, and polyadenylylation to yield mature mRNAs. An important, unresolved issue is whether any of these reactions are linked either to transcription by RNA polymerase II or to each other. To address one aspect of this question, we constructed a chimeric gene containing an RNA polymerase III promoter (the adenovirus VAI promoter) fused to the body and 3'-flanking sequences of a protein-coding gene (the herpesvirus tk gene). Here we show that this hybrid gene was transcribed from the RNA polymerase III promoter following transfection of human 293 cells and that the transcripts produced were stable and efficiently transported to the cytoplasm. Although a significant proportion of the transcripts were prematurely terminated at specific sites within the gene, a high percentage of the full-length RNA was accurately cleaved and polyadenylylated. These results demonstrate that cleavage and polyadenylylation of mRNA precursors are not obligatorily coupled to transcription by RNA polymerase II in vivo. |
| ISSN | 00278424 |
| e-ISSN | 10916490 |
| Journal | Proceedings of the National Academy of Sciences of the United States of America |
| Issue Number | 22 |
| Volume Number | 83 |
| Language | English |
| Publisher | National Academy of Sciences |
| Publisher Date | 1986-12-01 |
| Publisher Place | United States |
| Access Restriction | Open |
| Subject Keyword | Nucleic Acid Precursors Metabolism Poly A RNA Polymerase II Pharmacology RNA, Messenger Transcription, Genetic Endonucleases Nucleotide Mapping Promoter Regions, Genetic RNA Polymerase III RNA Precursors Single-Strand Specific DNA And RNA Endonucleases Thymidine Kinase Genetics Research Support, U.S. Gov't, P.H.S. Multidisciplinary |
| Content Type | Text |
| Resource Type | Article |
| Subject | Multidisciplinary |
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