Genomic DNA was extracted after cell lysis and immunoprecipitated by Diagenode ChIP-seq grade antibodies using the Diagenode iDeal Histones ChIP-seq kit Libraries were prepared with the NEBNext ultra 2 kit (NEB E7645L). Library pools were separated on an agarose gel and DNA of a 100-280 bp size-range was selected for sequencing on an Illumina HiSEQ 4000 as paired-end 75-bp reads.