MDM2 binding to anti-cancer protein p53, illustration

Bildnummer 12540823
MDM2 binding to anti-cancer protein p53, illustration
MDM2 binding to anti-cancer protein p53. Molecular model of mdm2 proteins (pink) binding to the anti-cancer protein p53 (also known as tumour protein 53, or TP53). This protein's action at the cellular level plays a role in repairing DNA (deoxyribonucleic acid), and can be activated by and work against oncogenes (genes that promote cancer). It can also initiate cell death if the DNA damage is too great. In a normal cell, p53 is inactivated by its negative regulator, mdm2. p53 works by binding to DNA in cell nuclei, and may be used in anti-cancer treatments. Mutations in p53 are thought to contribute to around half of human cancer cases. The p53 structure here shows: four DNA binding domains (dark blue), four transactivation domains (purple-blue, corners), flexible arms (light blue), and a tetramerization domain (centre).
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Credit: Science Photo Library / Gaertner, Juan
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