Cells were fixed for 10min at RT in 1% formaldehyde, harvested using a cell scraper, washed once in ice-cold PBS, and resuspended in RIPA buffer with protease inhibitor. The sample was then sonicated using an 3.2mm microtip (QSonica Sonicator 4000) at 30s on 30s off intervals and 40% amplitude for 180min while in a -30C 3:1 isopropanol and water bath containing dry ice. Subsequent steps were performed as per the standard protocol. DNA was size-selected during library building to an average fragment size of 200bp. Libraries were sequenced using Illumina HiSeq 2000. Libraries were generated following Illumina's DNA Sample Prep Kit protocol
GEO Accession
GSM1171657