1% Formaldheyde fixation followed by SDS buffer lysis Libraries were prepared according to Illumina's instructions. DNA was end-repaired using a combination of T4 DNA polymerase, E. coli DNA Pol I large fragment (Klenow polymerase) and T4 polynucleotide kinase. The blunt, phosphorylated ends were treated with Klenow fragment (32 to 52 exo minus) and dATP to yield a protruding 3- 'A' base for ligation of Illumina's adapters which have a single 'T' base overhang at the 3' end. After adapter ligation DNA, library fragments of ~230 bp (insert plus adaptor and PCR primer sequences) were selected from an agarose gel. The final size-selected lib. was amplified by 15 cycle of PCR followed by column purification of amplified DNA. The purified DNA was captured on an Illumina flow cell for cluster generation. ChIP was performed by cross-linking proteins to DNA using 2mM DSG and 1% formaldehyde solution (Gargiulo et al, 2009). Immunoprecipitated DNA (ChIP-seq) and Input DNA were Libraries were sequenced on the Genome Analyzer of HiSeeq2000 following the manufacturer's protocols.