Search results
Results from the WOW.Com Content Network
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 ]
P53, p63, and p73 have similar features in their gene structures and functions but have also diverged evolutionarily. The p53 family evolved from an ancestor gene in unicellular life. [ 4 ] The ancestor gene functioned in germ line DNA protection early invertebrates. [ 5 ]
3D structure of the human apoptosome-CARD complex. blue: apoptosome platform; magenta: CARD disk [1] The apoptosome is a large quaternary protein structure formed in the process of apoptosis . Its formation is triggered by the release of cytochrome c from the mitochondria in response to an internal (intrinsic) or external (extrinsic) cell death ...
In short, p53 is a tumor-suppressor protein that arrests the cell cycle and prevents cell growth and survival when DNA damage occurs. [48] Thus, the degradation of p53, induced by E6, promotes unregulated cell division, cell growth and cell survival, all characteristics of cancer. [49]
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.
In the field of genetics, a suicide gene is a gene that will cause a cell to kill itself through the process of apoptosis (programmed cell death). Activation of a suicide gene can cause death through a variety of pathways, but one important cellular "switch" to induce apoptosis is the p53 protein.
Activated p53 turns on genes for p21. P21 is a CDK inhibitor that binds to several cyclin/CDK complexes, including cyclin A-CDK2/1 and cyclin D/ CDK4 , and blocks the kinase activity of CDKs. [ 9 ] [ 13 ] Activated p21 can bind cyclin D/CDK4 and render it incapable of phosphorylating pRb.
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