A new analytical scale DNA affinity binding assay for analyses of specific protein-DNA interactions.
2001
Abstract We describe a rapid analytical assay for identification of proteins binding to specific DNA sequences. The DAPSTER assay ( D NA a ffinity p reincubation s pecificity te st of r ecognition assay) is a DNA affinity chromatography-based microassay that can discriminate between specific and nonspecific protein–DNA interactions. The assay is sensitive and can detect protein–DNA interactions and larger multicomponent complexes that can be missed by other analytical methods. Here we describe in detail the optimization and utilization of the DAPSTER assay to isolate AP-1 complexes and associated proteins in multimeric complexes bound to the AP-1 DNA element.
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