title: GSM3589843: NBLW-MES_H3K27ac; Homo sapiens; ChIP-Seq
library_construction_protocol: Cultured cells were fixed with 1% formaldehyde. Nuclei were isolated and the DNA was sheared to 200 to 300 bp fragments. Histon-bound DNA was precipitated using antibodies H3K27Ac (#4729, Abcam) and H3K4me3 (#04-745, Millipore).  De-crosslinked DNA was purified using Qiagen PCR purification kit (Qiagen) and quantified with Quant-IT Picogreen (Invitrogen). The DNA was used to generate sequencing libraries according to the manufactures procedure (Life Technologies): The DNA was end-polished, dA-tailed and adaptors with barcodes were ligated. The fragments were amplified (8 cycles) and quantified with a Bioanalyzer (Agilent). The libraries were prepped with the 5500W Flowchip v2 kit  (Life Technologies) and sequenced on the SOLiD Wildfire (Illumina) resulting in 50 bp reads.