RAMON ANDRADE 3DCIENCIA / SCIENCE PHOTO LIBRARY RAMON ANDRADE 3DCIENCIA / SCIENCE PHOTO LIBRARY
Tumour suppressor protein and DNA. Computer artwork showing a molecule of the tumour suppressor protein p53 (blue and pink) bound to a molecule of DNA (deoxyribonucleic acid, yellow and orange). DNA. It is produced in response to radiation and chemicals that damage the structure of DNA, when it binds to specific sequences in the DNA and halts the cell cycle. If there is only minor damage, p53 activates genes involved in DNA repair, but if the damage cannot be repaired it initiates cell death (apoptosis).
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