Human immunodeficiency virus type 1 virions composed of unprocessed Gag and Gag-Pol precursors are capable of reverse transcribing viral genomic RNA
| Autor: | D W Norbeck, R Swanstrom, Paul Krogstad, Andrew H. Kaplan, D J Kempf |
|---|---|
| Rok vydání: | 1994 |
| Předmět: |
Transcription
Genetic viruses medicine.medical_treatment Gene Products gag Biology Virus chemistry.chemical_compound medicine Pharmacology (medical) Protein Precursors Pharmacology Protease RNA-Directed DNA Polymerase Virion RNA Nucleotidyltransferase Fusion protein Virology Molecular biology Reverse transcriptase Fusion Proteins gag-pol Infectious Diseases chemistry DNA Viral HIV-1 RNA Viral DNA Research Article |
| Zdroj: | Antimicrobial Agents and Chemotherapy. 38:2929-2933 |
| ISSN: | 1098-6596 0066-4804 |
| DOI: | 10.1128/aac.38.12.2929 |
| Popis: | The structural proteins and enzymes of the human immunodeficiency virus type 1 core are translated as part of two polyprotein precursors, Gag and Gag-Pol, which are cleaved by a virally encoded protease. Viruses grown in the presence of inhibitors of the protease contain core particles that are aberrantly assembled, and upon infection of susceptible cells, they do not synthesize viral DNA. Through the use of a proteinase inhibitor (A77003), we determined that the viral reverse transcriptase can efficiently synthesize viral DNA as part of the unprocessed Gag-Pol precursor. We also found that the stabilities of core particles composed of unprocessed precursors were considerably enhanced. These observations suggest that for viruses composed of unprocessed precursors, replication is interrupted before the reverse transcription step. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|