Oncology & Cancer

Tumor resistance is promoted by anti-cancer protein

Lack of oxygen, or hypoxia, is a biological stressor that occurs under various conditions such as wound healing and stroke. To rescue the tissue, the body has innate mechanisms that "kick in" to make the cells of the hypoxic ...

Medical research

How do whales fight off cancer?

Oxford University epidemiologist Richard Peto was puzzled by a paradox: If cancer is a function of individual cells going haywire, wouldn't an organism with a lot more cells, say a whale, have a greater chance of getting ...

Medical research

Pancreatic cancer clue

Chronic pancreatitis (CP) is a predisposing condition for pancreatic ductal adenocarcinoma (PDAC), the most common and deadly cancer of the pancreas. However, the link between CP and PDAC is not known.

Medical research

Low doses of radiation promote cancer-capable cells

Low doses of radiation equivalent to three CT scans, which are considered safe, give cancer-capable cells a competitive advantage over normal cells in healthy tissue, scientists have discovered. Researchers at the Wellcome ...

Oncology & Cancer

Genetically modified virus combats prostate cancer

Researchers at the São Paulo State Cancer Institute (ICESP) in Brazil have used a genetically manipulated virus to destroy tumor cells upon injection into mice with prostate cancer. The virus also made tumor cells more sensitive ...

Oncology & Cancer

Choosing the right drug to fight cancer

Canadian researchers have discovered a molecular indicator of a mechanism that drives cancer progression, giving doctors the possibility of using precision medicine, that is, choosing which patients will respond to a particular ...

Medical research

How molecular escorts help prevent cancer

The anti-tumor protein p53 can decide on the life or death of a cell: If it detects damage in the cell's genome, the protein pushes the cell to suicide. New research conducted at Technical University of Munich (TUM) shows ...

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P53

More reference expression data

p53 (also known as protein 53 or tumor protein 53), is a transcription factor which in humans is encoded by the TP53 gene. p53 is important in multicellular organisms, where it regulates the cell cycle and thus functions as a tumor suppressor that is involved in preventing cancer. As such, p53 has been described as "the guardian of the genome," "the guardian angel gene," and the "master watchman," referring to its role in conserving stability by preventing genome mutation.

The name p53 is in reference to its apparent molecular mass: it runs as a 53 kilodalton (kDa) protein on SDS-PAGE. But based on calculations from its amino acid residues, p53's mass is actually only 43.7kDa. This difference is due to the high number of proline residues in the protein which slow its migration on SDS-PAGE, thus making it appear heavier than it actually is. This effect is observed with p53 from a variety of species, including humans, rodents, frogs, and fish.

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