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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 ]
Chromosome 3 is one of the 23 pairs of chromosomes in humans. People normally have two copies of this chromosome. People normally have two copies of this chromosome. Chromosome 3 spans more than 198 million base pairs (the building material of DNA ) and represents about 6.5 percent of the total DNA in cells .
•List of human protein-coding genes page 2 covers genes EPHA1–MTMR3 •List of human protein-coding genes page 3 covers genes MTMR4–SLC17A7 •List of human protein-coding genes page 4 covers genes SLC17A8–ZZZ3 NB: Each list page contains 5000 human protein-coding genes, sorted alphanumerically by the HGNC-approved gene symbol.
Another example of ERV exploiting cellular mechanisms is p53, a tumor suppressor gene (TSG). DNA damage and cellular stress induces the p53 pathway, which results in cell apoptosis. Using chromatin immunoprecipitation with sequencing, thirty-percent of all p53-binding sites were located within copies of a few primate-specific ERV families.
BAP1 somatic mutations were identified in a small number of breast and lung cancer cell lines, [5] but BAP1 was first shown to act as a tumor suppressor in cultured cells, where its deubiquitinase (UCH) domain and nuclear localization sequences were required for BAP1 to suppress cell growth. [13]
The tumor virus can introduce and express a "transforming" gene either through the integration of DNA or RNA into the host genome. The tumor virus can alter expression on preexisting genes of the host. One or both of these mechanisms can occur in the same host cell.
The human c-Raf gene is located on chromosome 3. At least two isoforms of mRNA have been described (arising from inclusion or removal of an alternative exon) that display only minute differences. The shorter, major isoform - consisting of 17 exons - encodes a protein kinase of 648 amino acids. [16] A schematic architecture of human c-Raf protein
Hepatitis A virus cellular receptor 2 (HAVCR2), also known as T-cell immunoglobulin and mucin-domain containing-3 (TIM-3), is a protein that in humans is encoded by the HAVCR2 (TIM-3) gene. HAVCR2 was first described in 2002 as a cell surface molecule expressed on IFNγ producing CD4+ Th1 and CD8+ Tc1 cells.