library_construction_protocol: RNAs were extracted using Trizol, chloroform, and isopropanol and treated with DNase I. DNA Chromatin was crosslinbked with formalaldehyde and fragmented by sonnication. Specific fragments were inmunoprecipitated with it's coresponding antibody. mRNAs were purified from total RNA using PolyT oligo-attached beads and converted to cDNAs for library preparation. cDNA libraries were sequenced using a paired-end 150 bp sequencing strategy. ChIP-Seq libraries were prepared from the inmunoprecipitated fragments using a standard paired end 150bp DNA sequencing strategy.