Lysates were clarified from sonicated nuclei and Su(H)-DNA complexes were isolated with antibody. Sequencing libraries were prepared with the NEB Next ChIP-Seq Library Prep Kit according to NEB’s instructions (New England Biolabs, Ipswich, MA, USA). After adapter ligation, library fragments of 250-350 bp were isolated and PCR amplified with 18 cycles. Library fragments were purified, loaded on an Illumina flow cell for cluster generation and sequenced on the HiSeq 2000 (TruSeq cBot-HS v3 and TruSeq SBS Kit v3) following the manufacturer’s protocols (Illumina, San Diego, CA, USA)