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Protein TP53BP1 PDB 1gzh.png
Available structures
PDB Ortholog search: PDBe RCSB
Aliases TP53BP1, 53BP1, p202, p53BP1, TP53, TDRD30, tumor protein p53 binding protein 1
External IDs MGI: 1351320 HomoloGene: 4137 GeneCards: 7158
RNA expression pattern
PBB GE TP53BP1 203050 at tn.png
More reference expression data
Species Human Mouse
RefSeq (mRNA)



RefSeq (protein)



Location (UCSC) Chr 15: 43.4 – 43.51 Mb Chr 2: 121.19 – 121.27 Mb
PubMed search [1] [2]
View/Edit Human View/Edit Mouse

Tumor suppressor p53-binding protein 1 also known as p53-binding protein 1 or 53BP1 is a protein that in humans is encoded by the TP53BP1 gene.[1][2][3]

Clinical significance[edit]

53BP1 is underexpressed in most cases of triple-negative breast cancer.[4]


53BP1 has been shown to interact with:


  1. ^ a b Iwabuchi K, Bartel PL, Li B, Marraccino R, Fields S (Jun 1994). "Two cellular proteins that bind to wild-type but not mutant p53". Proceedings of the National Academy of Sciences of the United States of America 91 (13): 6098–102. doi:10.1073/pnas.91.13.6098. PMC 44145. PMID 8016121. 
  2. ^ Iwabuchi K, Li B, Massa HF, Trask BJ, Date T, Fields S (Oct 1998). "Stimulation of p53-mediated transcriptional activation by the p53-binding proteins, 53BP1 and 53BP2". The Journal of Biological Chemistry 273 (40): 26061–8. doi:10.1074/jbc.273.40.26061. PMID 9748285. 
  3. ^ "Entrez Gene: TP53BP1 tumor protein p53 binding protein 1". 
  4. ^ Bouwman P, Aly A, Escandell JM, Pieterse M, Bartkova J, van der Gulden H, Hiddingh S, Thanasoula M, Kulkarni A, Yang Q, Haffty BG, Tommiska J, Blomqvist C, Drapkin R, Adams DJ, Nevanlinna H, Bartek J, Tarsounas M, Ganesan S, Jonkers J (Jun 2010). "53BP1 loss rescues BRCA1 deficiency and is associated with triple-negative and BRCA-mutated breast cancers". Nature Structural & Molecular Biology 17 (6): 688–95. doi:10.1038/nsmb.1831. PMC 2912507. PMID 20453858. 
  5. ^ a b Fernandez-Capetillo O, Chen HT, Celeste A, Ward I, Romanienko PJ, Morales JC, Naka K, Xia Z, Camerini-Otero RD, Motoyama N, Carpenter PB, Bonner WM, Chen J, Nussenzweig A (Dec 2002). "DNA damage-induced G2-M checkpoint activation by histone H2AX and 53BP1". Nature Cell Biology 4 (12): 993–7. doi:10.1038/ncb884. PMID 12447390. 
  6. ^ a b Ward IM, Minn K, Jorda KG, Chen J (May 2003). "Accumulation of checkpoint protein 53BP1 at DNA breaks involves its binding to phosphorylated histone H2AX". The Journal of Biological Chemistry 278 (22): 19579–82. doi:10.1074/jbc.C300117200. PMID 12697768. 
  7. ^ a b c Sengupta S, Robles AI, Linke SP, Sinogeeva NI, Zhang R, Pedeux R, Ward IM, Celeste A, Nussenzweig A, Chen J, Halazonetis TD, Harris CC (Sep 2004). "Functional interaction between BLM helicase and 53BP1 in a Chk1-mediated pathway during S-phase arrest". The Journal of Cell Biology 166 (6): 801–13. doi:10.1083/jcb.200405128. PMC 2172115. PMID 15364958. 
  8. ^ a b Lo KW, Kan HM, Chan LN, Xu WG, Wang KP, Wu Z, Sheng M, Zhang M (Mar 2005). "The 8-kDa dynein light chain binds to p53-binding protein 1 and mediates DNA damage-induced p53 nuclear accumulation". The Journal of Biological Chemistry 280 (9): 8172–9. doi:10.1074/jbc.M411408200. PMID 15611139. 
  9. ^ Choubey D, Li SJ, Datta B, Gutterman JU, Lengyel P (Oct 1996). "Inhibition of E2F-mediated transcription by p202". The EMBO Journal 15 (20): 5668–78. PMC 452311. PMID 8896460. 
  10. ^ Botuyan MV, Lee J, Ward IM, Kim JE, Thompson JR, Chen J, Mer G (Dec 2006). "Structural basis for the methylation state-specific recognition of histone H4-K20 by 53BP1 and Crb2 in DNA repair". Cell 127 (7): 1361–73. doi:10.1016/j.cell.2006.10.043. PMC 1804291. PMID 17190600. 
  11. ^ Jowsey PA, Doherty AJ, Rouse J (Dec 2004). "Human PTIP facilitates ATM-mediated activation of p53 and promotes cellular resistance to ionizing radiation". The Journal of Biological Chemistry 279 (53): 55562–9. doi:10.1074/jbc.M411021200. PMID 15456759. 
  12. ^ Manke IA, Lowery DM, Nguyen A, Yaffe MB (Oct 2003). "BRCT repeats as phosphopeptide-binding modules involved in protein targeting". Science 302 (5645): 636–9. doi:10.1126/science.1088877. PMID 14576432. 
  13. ^ a b Yoo E, Kim BU, Lee SY, Cho CH, Chung JH, Lee CH (Aug 2005). "53BP1 is associated with replication protein A and is required for RPA2 hyperphosphorylation following DNA damage". Oncogene 24 (35): 5423–30. doi:10.1038/sj.onc.1208710. PMID 15856006. 
  14. ^ Derbyshire DJ, Basu BP, Serpell LC, Joo WS, Date T, Iwabuchi K, Doherty AJ (Jul 2002). "Crystal structure of human 53BP1 BRCT domains bound to p53 tumour suppressor". The EMBO Journal 21 (14): 3863–72. doi:10.1093/emboj/cdf383. PMC 126127. PMID 12110597. 
  15. ^ Ekblad CM, Friedler A, Veprintsev D, Weinberg RL, Itzhaki LS (Mar 2004). "Comparison of BRCT domains of BRCA1 and 53BP1: a biophysical analysis". Protein Science 13 (3): 617–25. doi:10.1110/ps.03461404. PMC 2286730. PMID 14978302. 
  16. ^ Joo WS, Jeffrey PD, Cantor SB, Finnin MS, Livingston DM, Pavletich NP (Mar 2002). "Structure of the 53BP1 BRCT region bound to p53 and its comparison to the Brca1 BRCT structure". Genes & Development 16 (5): 583–93. doi:10.1101/gad.959202. PMC 155350. PMID 11877378. 
  17. ^ Derbyshire DJ, Basu BP, Date T, Iwabuchi K, Doherty AJ (Oct 2002). "Purification, crystallization and preliminary X-ray analysis of the BRCT domains of human 53BP1 bound to the p53 tumour suppressor". Acta Crystallographica Section D 58 (Pt 10 Pt 2): 1826–9. PMID 12351827. 

Further reading[edit]