| Assay Method Information | |
| | Alpha Screen Interaction Assay |
| Description: | An AlphaScreen assay was performed according to the manufacturer's protocol (Perkin Elmer, Benelux). Reactions were performed in 25 ul final volume in 384-well Optiwell microtiter plates (Perkin Elmer). The reaction buffer contained 25 mM Tris-HCl (pH 7.4), 150 mM NaCl, 1 mM MgCl2, 0.01% (v/v) Tween-20 and 0.1% (w/v) bovine serum albumin. His6-tagged integrase (300 nM final concentration) was incubated with the compounds for 30 min at 4 C. The compounds were added at varying concentrations spanning a wide range from 0.1 up to 100 uM. Afterwards 100 nM flag-LEDGF/p75 was added and incubation was prolonged for an additional hour at 4 C. Subsequently 5 ul of Ni-chelate-coated acceptor beads and 5 ul anti-flag donor beads were added to a final concentration of 20 ug/ml of both beads. Proteins and beads were incubated for 1 h at 30 C. in order to allow association to occur. Exposure of the reaction to direct light was omitted as much as possible. |
| Affinity data for this assay | |
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