Chromatin immunoprecipitation of Sap130 was performed with rabbit anti-Sap130 antibody (A302-491A: Bethyl laboratories, 2ug) and iDeal ChIP-seq Kit for Transcription Factors (Diagenode) following the manufacturer's protocol ChIP-seq libraries were generated using NEBNext Ultra DNA Library Prep Kit for Illumina (NEB) following the manufacturer's protocol.