Human cells were mixed with Drosophila cells at a 2:1 ratio and then cells were cross-linked with 1% EM-grade paraformaldehyde. Cells were lysed with detergent and chromatin solubilized by shearing (for H3K27ac IP) or shearing and enzymatic digestion (for BRD4-NUT IP). An aliquot was removed as the input control and the samples then immunoprecipitated with the respective antibody. DNA-protein cross-links were reversed and the DNA then purified. DNA was prepared for next-generation sequencing using a NEBNext Ultra II DNA Library Prep Kit for Illumina (New England Biolabs).