title: GSM3605972: LV1356_donor_input; Homo sapiens; ChIP-Seq
library_construction_protocol: Chromatin immunoprecipitation were performed as previously described (PMID: 19212405) with some modifications. Briefly, frozen left ventricle tissue was pulverized with a mortar and pestle, resuspeneded in PBS, and cross-linked with 1% formaldehyde at room temperature for 10 min. Chromatin was sonicated to obtain fragments with an average size ranging between 100-600 bp.  Chromatin was inclubated for 2h at 4 C with 5 µg of antibody. Protein A and G Dynabeads (Invitrogen) were then added to this chromatin/antibody mixture for 30 minutes at 4 C. Immuno-complexes were sequentially washed. The protein/DNA complexes were eluted in an SDS buffer (1% SDS, 50 mM Tris pH 8.0, 10 mM EDTA) at 37 C for one hour. Samples were treated  with Proteinase K at 37 C and reverse-crosslinked overnight. Finally, the DNA was purified on Zymo ChIP clean and concentrate columns (Zymo Research) and the quality was assessed on the Agilent bioanalyzer. The ChIP-seq libraries were prepared using the Illumina TruSeq library preparation kit followed by sequencing on an Illumina HiSeq 2500 or 4000.
attributes.tag: GEO Accession
attributes.value: GSM3605972