| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 3406741 | Journal of Virological Methods | 2012 | 7 Pages |
HIV-1 integrase (HIV-1 IN), a well-validated antiviral drug target, catalyzes multistep reactions to incorporate viral DNA into the genome of the host cell; these include both a 3′-processing (3′P) reaction and a strand transfer reaction. These enzymatic activities can be measured in vitro with short DNA oligonucleotides that mimic a single viral LTR DNA end and purified IN. A highly sensitive and reproducible time-resolved fluorescence (TRF)-based assay for HIV-1 IN 3′P activity is now reported. This assay was optimized with respect to time and concentrations of metal ions, substrate and enzyme. The assay has now been used successfully to measure HIV-1 IN 3′P activity and has been shown to detect the anti-IN activity of several known 3′P inhibition compounds accurately. This assay, which is amenable to high-throughput screening, will be useful for identification of additional HIV-1 IN 3′P inhibitors.
► A time-resolved fluorescence-based assay for HIV-1 IN 3′ processing. ► Optimized for time and concentrations of metal ions, substrate and enzyme. ► Used to study IN 3′P kinetics and inhibition by both described and novel 3′P inhibition compounds. ► Highly sensitive and reproducible. ► Amenable for high-throughput screening.
