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] .

2024年12月25日 · p53 (TP53) is a transcription factor whose protein levels and post-translational modification state alter in response to cellular stress (e.g. hypoxia, DNA and spindle damage). Activation of p53 occurs by several mechanisms including phosphorylation by ATM, ATR, Chk1 and MAPKs. Forms homodimers and homotetramers (PubMed: 19011621).

TP53 is a gene that encodes for the p53 tumor suppressor protein, commonly referred to as the “Guardian of the Genome” [1]. Its main biological function appears to involve the protection of the DNA integrity of the cell. TP53 plays additional roles …

2025年1月11日 · This gene encodes a tumor suppressor protein containing transcriptional activation, DNA binding, and oligomerization domains. The encoded protein responds to diverse cellular stresses to regulate expression of target genes, thereby inducing cell cycle arrest, apoptosis, senescence, DNA repair, or changes in metabolism.

The p53 gene has been mapped to chromosome 17. In the cell, p53 protein binds DNA, which in turn stimulates another gene to produce a protein called p21 that interacts with a cell division-stimulating protein (cdk2). When p21 is complexed with cdk2 the cell cannot pass through to the next stage of cell division.

2023年3月1日 · Here, we provide a systematic review of the diverse molecular mechanisms of the p53 signaling pathway and how TP53 mutations impact tumor progression. We also discuss key structural features of...

Mutations in the TP53 gene or functional inactivation of the p53 protein play a crucial role in cell transformation and the development of cancers. Missense nucleotide changes in the TP53 gene are the most frequent mutations observed in human cancers, making mutant p53 a key target for cancer research and development of therapies.

This study identified 350 genes that are confirmed direct p53 targets (see below) based on a meta-analysis of 15 genome-wide datasets and over 300 single-gene studies. These genes have roles in several cellular functions including apoptosis, cell-cycle arrest, autophagy, metabolism, DNA repair, translational control, feedback mechanisms.

This gene encodes a tumor suppressor protein containing transcriptional activation, DNA binding, and oligomerization domains. The encoded protein responds to diverse cellular stresses to regulate expression of target genes, thereby inducing cell cycle arrest, apoptosis, senescence, DNA repair, or changes in metabolism.

The TP53 gene provides instructions for making a protein called tumor protein p53 (or p53). This protein acts as a tumor suppressor, which means that it regulates cell division by keeping cells from growing and dividing (proliferating) too fast or in an uncontrolled way.