p53 gene

TP53 is a tumor suppressor gene that is named after, and provides instructions for making, a protein called tumor protein 53 (TP53). Through the effect of the protein that it produces, TP53 is a tumor suppressor gene, which means that it regulates the cycle of cell division by keeping cells from growing and dividing too fast or in an uncontrolled way.
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A tumor suppressor gene that normally inhibits the growth of tumors. This gene is altered in many types of cancer.