The TAF1L (BD1 + BD2) Inhibitor Screening Assay Kit is designed to measure the inhibition of TAF1L binding to its substrate. The key to the assay kit is specific binding of the TAF1L bromodomains 1 and 2 (a.a. 1398-1649) to the acetylated histone substrate. With this kit, only three simple steps on a microtiter plate are required. First, a sample containing TAF1L and an inhibitor of choice is incubated with the biotinylated substrate for thirty minutes. Next, acceptor beads are added, then donor beads, followed by reading the Alpha-counts.