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| Content Provider | World Health Organization (WHO)-Global Index Medicus |
|---|---|
| Author | Yoshinaga, S. K. Boulanger, P. A. Berk, A. J. |
| Abstract | tRNA genes and adenovirus viral-associated (VA) genes are transcribed by RNA polymerase III. Transcription of these genes in vitro requires two protein fractions containing transcription factors designated TFIIIB and TFIIIC, in addition to RNA polymerase III. We report that the TFIIIC fraction derived from human cells in culture can be separated into two functional components, which we call TFIIIC1 and TFIIIC2. Both TFIIIC1 and TFIIIC2 fractions are required for in vitro transcription of the VA1 gene. In DNase I 'footprinting' experiments, the TFIIIC2 fraction protects the internal control region termed the B block. Addition of the TFIIIC1 fraction extends the footprint over the internal control region called the A block. TFIIIC1 activity is the limiting transcription factor activity required for VA1 transcription in the crude extract. TFIIIC2 activity sediments as a large component of approximately 18 S, while TFIIIC1 activity sediments at approximately 9 S. These data indicate that the two activities are unique components and when added together reconstitute TFIIIC activity. |
| ISSN | 00278424 |
| e-ISSN | 10916490 |
| Journal | Proceedings of the National Academy of Sciences of the United States of America |
| Issue Number | 11 |
| Volume Number | 84 |
| Language | English |
| Publisher | National Academy of Sciences |
| Publisher Date | 1987-07-01 |
| Publisher Place | United States |
| Access Restriction | Open |
| Subject Keyword | Genes Transcription Factors, TFIII Transcription Factors Genetics Adenoviruses, Human Cell Line Deoxyribonuclease I Kinetics RNA, Transfer Isolation & Purification Metabolism Transcription, Genetic Research Support, Non-U.S. Gov't Research Support, U.S. Gov't, P.H.S. Multidisciplinary |
| Content Type | Text |
| Resource Type | Article |
| Subject | Multidisciplinary |
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