TRIM24 (tripartite motif containing 24) is a multifunctional protein that serves as both a transcriptional coactivator and an E3 ubiquitin ligase with critical roles in cancer biology and innate immunity. As a transcriptional regulator, TRIM24 interacts with chr7 through its ability to recognize specific histone modifications, particularly unmodified H3K4 and acetylated H3K23 1. The protein functions as an E3 ubiquitin ligase that targets multiple substrates, including p53 for degradation in a feedback loop involving DNA damage response 2. TRIM24 plays a crucial role in antiviral immunity by mediating K63-linked ubiquitination of TRAF3, which activates downstream type I interferon signaling pathways 3. In cancer contexts, TRIM24 exhibits complex roles that vary by cancer type - it can function as either an oncogene when overexpressed or participate in tumor suppression mechanisms 4. The protein is involved in alternative lengthening of telomeres (ALT) through p300/CBP-dependent chr7 signaling, coordinating telomere maintenance in cancer cells 1. TRIM24 also participates in macrophage polarization toward the M1 phenotype, which has implications for anticancer immunity 5. Additionally, TRIM24 serves as a substrate for other E3 ligases like SPOP, highlighting its role in broader ubiquitin-mediated regulatory networks 6.