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| Content Provider | World Health Organization (WHO)-Global Index Medicus |
|---|---|
| Author | Weinberg, D. H. Kelly, T. J. |
| Description | Author Affiliation: Weinberg DH ( Department of Molecular Biology and Genetics, Johns Hopkins University School of Medicine, Baltimore, MD 21205.); |
| Abstract | DNA polymerase alpha-primase has long been considered the primary, if not sole, replicative DNA polymerase in eukaryotic cells. However, recent experiments have provided indirect evidence that a second DNA polymerase may play a role in DNA replication. To identify cellular proteins necessary for DNA synthesis in mammalian cells, we have been studying the cell-free system developed for the replication of simian virus 40 DNA. In this report, we present direct evidence that a second DNA polymerase is required in addition to DNA polymerase alpha-primase complex to obtain efficient replication of simian virus 40 origin-containing DNA. This DNA polymerase activity is not affected by monoclonal antibodies that inhibit the activity of DNA polymerase alpha and is relatively resistant to the inhibitor [N2-(p-n-butylphenyl)-9-(2-deoxy-beta-D-ribofuranosyl)guanine 5'-triphosphate]. Moreover, the activity of the polymerase is highly dependent upon the accessory protein, proliferating-cell nuclear antigen. These characteristics are consistent with the hypothesis that this second DNA polymerase is DNA polymerase delta. |
| ISSN | 00278424 |
| e-ISSN | 10916490 |
| Journal | Proceedings of the National Academy of Sciences of the United States of America |
| Issue Number | 24 |
| Volume Number | 86 |
| Language | English |
| Publisher | National Academy of Sciences |
| Publisher Date | 1989-01-01 |
| Publisher Place | United States |
| Access Restriction | Open |
| Subject Keyword | DNA Replication DNA-Directed DNA Polymerase Metabolism RNA Nucleotidyltransferases Simian Virus 40 Genetics Antibodies, Monoclonal Chromatography, Ion Exchange DNA Polymerase III DNA Primase Isolation & Purification Deoxyguanine Nucleotides Pharmacology HeLa Cells Enzymology Kinetics Nuclear Proteins Nucleic Acid Synthesis Inhibitors Proliferating Cell Nuclear Antigen Research Support, U.S. Gov't, P.H.S. Multidisciplinary |
| Content Type | Text |
| Resource Type | Article |
| Subject | Multidisciplinary |
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