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| Content Provider | World Health Organization (WHO)-Global Index Medicus |
|---|---|
| Author | Loeb, L. A. Kim, B. |
| Description | Author Affiliation: Kim B ( Joseph Gottstein Memorial Cancer Research Laboratory, Department of Pathology, University of Washington, Seattle 98195.); |
| Abstract | We present evidence that human immunodeficiency virus (HIV) reverse transcriptase (RT) can substitute for DNA polymerase I in bacteria. Expression of HIV RT enables an Escherichia coli mutant, polA12 recA718, containing a temperature-sensitive mutation in DNA polymerase I, to grow at a nonpermissive temperature. The plasmid pBR322 contains a DNA polymerase I-dependent origin of replication. Expression of HIV RT enables the same E. coli mutant to maintain this plasmid at a nonpermissive temperature. Furthermore, expression of HIV RT in this mutant renders it sensitive to 3'-azido-3'-deoxythymidine, a commonly used anti-AIDS drug that targets HIV RT. These combined findings on the genetic complementation of DNA polymerase I by HIV RT provide a bacterial assay to screen for drugs directed against HIV RT. Genetic complementation provides a method for positive selection of large numbers of functional HIV RT mutants for studies on structure-function relationships. |
| ISSN | 00278424 |
| e-ISSN | 10916490 |
| Journal | Proceedings of the National Academy of Sciences of the United States of America |
| Issue Number | 3 |
| Volume Number | 92 |
| Language | English |
| Publisher | National Academy of Sciences |
| Publisher Date | 1995-03-01 |
| Publisher Place | United States |
| Access Restriction | Open |
| Subject Keyword | DNA Polymerase I Metabolism Escherichia Coli Enzymology HIV RNA-Directed DNA Polymerase DNA Replication Drug Effects Drug Evaluation, Preclinical Genetics Genetic Complementation Test Mutation Physiology Plasmids Temperature Zidovudine Pharmacology Research Support, U.S. Gov't, P.H.S. Multidisciplinary |
| Content Type | Text |
| Resource Type | Article |
| Subject | Multidisciplinary |
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