library_construction_protocol: ChIP DNA was extracted by Native ChIP protocol Native ChIP and crosslinked ChIP. Native ChIP assays were performed as described previously (Fukuda et al. 2023). Antibody against H3K27ac (D5E5, CST) was used. The ChIP DNA was fragmented by Picoruptor (Diagenode) for 10 cycles of 30 seconds on, 30 seconds off. Then, ChIP library was constructed by KAPA Hyper Prep Kit (KAPA BIOSYSTEMS) and SeqCap Adapter Kit A (Roche) according to manufacturer instructions. The concentration of the ChIP-seq library was quantified by KAPA Library quantification kit (KAPA BIOSYSTEMS). ChIP sequencing was performed on a HiSeq X platform (Illumina). We performed two biological replicates for ChIP-seq.