ChIP was performed using the SimpleChIP® Plus Enzymatic Chromatin IP Kit (Magnetic Beads) (Cell Signaling Technology; #9005); PHF2 Antibody (Cell Signaling Technology, Catalog #3497 Lot#2) To make libraries, TruSeq ChIP protocol was followed as described in the kit (Illumina; Catalog # IP-202-1012) manual Libraries were pooled together and sequenced on the HiSeq 2500 sequencer using the Standard sequencing protocols. Images analysis and base calling was done using the Standard Illumina pipeline, and then demultiplexed into fastq files