title: GSM4061352: BJ1_30min_R1_HiC; Homo sapiens; Hi-C
library_construction_protocol: Briefly, 5-20 million cells were fixed with 1% formaldehyde, suspended in cell lysis buffer for permeabilization, and homogenized by douncing. Crosslinked chromatin was digested overnight with HindIII. Sticky ends were filled in with biotin-dCTP, and the blunt ends of interacting fragments were ligated together. DNA was purified by two phenol-chloroform extractions and ethanol precipitation. Biotin-dCTP at unligated ends was removed, and the DNA was sheared to a target size of 200-400 bp by a Covaris sonicator Biotinylated DNA was pulled down using streptavidin coated magnetic beads and prepared for multiplex sequencing on an Illumina platform using the NEBNext Ultra II kit (NEB). All end preparation, adaptor ligation, and PCR amplification steps were carried out on bead bound DNA libraries.
identifiers.namespace: GEO
identifiers.id: GSM4061352