affinity chromatography technology DAP-seq MI:2288 2018-06-28T16:09:45Z PSI-MI DAP-seq is an in vitro TF-DNA binding assay in which a DAP-seq gDNA library is prepared by attaching a short DNA sequencing adaptor onto purified and fragmented gDNA. In a separate reaction, an affinity-purified TF is prepared by in vitro expression, bound to ligand-coupled beads, and washed to remove non-specific cellular components. The gDNA library is added to the affinity-bound TF and the unbound DNA is washed away. The bound fraction is eluted, amplified with PCR primers to introduce an indexed adaptor, and the DNA is sequenced. DNA affinity purification sequencing dap-seq pporras