library_construction_protocol: RNA was isolated using Trizol reagent (ThermoFisher) or the AllPrep DNA/RNA/protein mini kit (Qiagen #80004) according to manufacturer recommendations. For ChIP-seq, HCT116, HCT8, DLD1, and SW620 cells were cross-linked with formaldehyde (1% final) for 10 min at room temperature. Cross-linked cells were quenched with glycine (125 mM final) for 5 min, followed by two washes in cold PBS. Nuclei were then isolated from 20 million cells as previously described (67), and chromatin was sheared to 250-bp average size using a Covaris S220. Immunoprecipitations were performed using 1000 μg of sheared chromatin lysate and 5 μg of p53 antibody (p53 D07; Santa Cruz, sc-47698) preconjugated to protein G beads (Invitrogen). ChIP reactions were incubated for 16 hours at 4°