ATAC-seq (Assay for Transposase-Accessible Chromatin with high throughput sequencing), which inserts sequence junctions into chromatin open regions by hyperactivating Tn5 transposase, and then analyzes DNA sequencing data to infer the accessibility of chromatin regions, transcription factor binding sites and nucleosome locations. https://www.cd-genomics.com/epigenetics/atac-seq.html