Abstract
The insertion of a DNA copy of its RNA genome into a chromosome of the host cell is mediated by the viral integrase with the help of mostly uncharacterized cellular cofactors. We have recently described that the transcriptional co-activator LEDGF/p75 strongly interacts with HIV-1 integrase. Here we show that interaction of HIV-1 integrase with LEDGF/p75 is important for viral replication. Using multiple approaches including two-hybrid interaction studies, random and directed mutagenesis, we could demonstrate that HIV-1 virus harboring a single mutation that disrupts integrase-LEDGF/p75 interaction, resulted in defective HIV-1 replication. Furthermore, we found that LEDGF/p75 tethers HIV-1 integrase to chromosomes and that this interaction may be important for the integration process and the replication of HIV-1.
Original language | English |
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Pages (from-to) | 25517-23 |
Number of pages | 7 |
Journal | The Journal of biological chemistry |
Volume | 280 |
Issue number | 27 |
DOIs | |
Publication status | Published - 08 Jul 2005 |
Keywords
- Chromosomes, Human
- Glutamine
- HIV Infections
- HIV Integrase
- HIV-1
- HeLa Cells
- Humans
- Intercellular Signaling Peptides and Proteins
- Virus Integration
- Virus Replication