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p53, also known as Tumor protein P53, cellular tumor antigen p53 (UniProt name), or transformation-related protein 53 (TRP53) is a regulatory protein that is often mutated in human cancers. The p53 proteins (originally thought to be, and often spoken of as, a single protein) are crucial in vertebrates , where they prevent cancer formation. [ 5 ]
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. [ 5 ] [ 6 ] [ 7 ] Clinical significance
The p53 p63 p73 family is a family of tumor suppressor genes. [1] [2] This gene family codes the proteins: p53; TP73L (also known as "p63") p73; They are sometimes considered part of a "p53 family." When overexpressed, these proteins are known to be involved in tumor pathogenesis. [3]
Apoptosis-stimulating of p53 protein 2 (ASPP2) also known as Bcl2-binding protein (Bbp) and tumor suppressor p53-binding protein 2 (p53BP2) is a protein that in humans is encoded by the TP53BP2 gene. [ 5 ] [ 6 ] [ 7 ] Multiple transcript variants encoding different isoforms have been found for this gene.
The p53 upregulated modulator of apoptosis (PUMA) also known as Bcl-2-binding component 3 (BBC3), is a pro-apoptotic protein, member of the Bcl-2 protein family. [5] [6] In humans, the Bcl-2-binding component 3 protein is encoded by the BBC3 gene. [5] [6] The expression of PUMA is regulated by the tumor suppressor p53.
The cleavage of full-length PIDD1 (FL-PIDD1) into PIDD-C or PIDD-CC seems to occur constitutively, meaning it happens regularly, which makes FL-PIDD1 levels remain low even when p53 is activated. However, the observation that PIDD-C accumulates before PIDD-CC in response to DNA damage supports the idea that PIDD-C is the primary form generated ...
WASHINGTON — With Donald Trump heading back to the White House, a growing band of younger, more energetic House Democrats is challenging seasoned veterans for powerful congressional posts ...
This can result in a deadly positive feedback loop - tumor cells produce their own mitogens, which stimulate more tumor cells to replicate, which can then produce even more mitogens. For example, consider one of the earliest oncogenes to be identified, p28sis from the simian sarcoma virus, which causes tumorigenesis in the host animal.