p53

Supporting information

p53 (aka TP53) is a transcription factor whose protein levels and post-translational modification state alter in response to cellular stress (such as DNA damage, hypoxia and spindle damage). Activation of p53 begins through a number of mechanisms including phosphorylation by ATM, ATR, Chk1 and MAPKs. MDM2 is a ubiquitin ligase that binds p53 and targets p53 for proteasomal degradation.

Phosphorylation, p14ARF and USP7 prevent MDM2-p53 interactions, leading to an increase in stable p53 tetramers in the cytoplasm. Further modifications such as methylation and acetylation lead to an increase in p53 binding to gene specific response elements. p53 regulates a large number of genes (>100 genes) that control a number of key tumor suppressing functions such as cell cycle arrest, DNA repair, senescence and apoptosis. Whilst the activation of p53 often leads to apoptosis, p53 inactivation facilitates tumor progression; inactivating p53 mutations occur in over 50% of cancers.

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Species Gene Symbol Gene Accession No. Protein Accession No.
Human TP53 NM_000546 P04637
Mouse Trp53 NM_011640 P02340
Rat Tp53 NM_030989 P10361

Literature for p53

Cancer Research Product Guide

A collection of over 750 products for cancer research, the guide includes research tools for the study of:

  • Cancer Metabolism
  • Epigenetics in Cancer
  • Receptor Signaling
  • Cell Cycle and DNA Damage Repair
  • Angiogenesis
  • Invasion and Metastasis
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Cancer Research Product Guide
Cell Cycle & DNA Damage Repair Life Science Poster

In normal cells, each stage of the cell cycle is tightly regulated, however in cancer cells many genes and proteins that are involved in the regulation of the cell cycle are mutated or over expressed. Adapted from the 2015 Cancer Product Guide, Edition 3, this poster summarizes the stages of the cell cycle and DNA repair. It also highlights strategies for enhancing replicative stress in cancer cells to force mitotic catastrophe and cell death.

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Cell Cycle & DNA Damage Repair Life Science Poster
p53 Life Science Poster

Written by Christopher J. Brown et al, this poster highlights the main strategies that may be utilized to reactivate p53, that is found to be frequently mutated and inactivated in tumors. It focuses on small molecules and peptides which act to stabilize p53 and rescue wild-type activity. Compounds available from Tocris are listed.

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p53 Life Science Poster
p53 Signaling Pathway
p53 Signaling Pathway

p53 signaling plays an important role in the co-ordination of the cellular response different types of stress such as DNA damage and hypoxia. The downstream signals lead to apoptosis, senescence and cell cycle arrest.

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Cancer Research Product Guide

Cancer Research Product Guide

Our Cancer Research Guide highlights over 750 products for cancer research. Request copy or view PDF today.

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Cell Cycle Life Science Poster

Cell Cycle & DNA Damage Repair Life Science Poster

Our Cell Cycle & DNA Damage Repair poster summarizes the stages of the cell cycle and DNA repair. It also highlights strategies for enhancing replicative stress in cancer cells to force mitotic catastrophe and cell death. Request copy or view PDF today.

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p53 Life Science Poster

Written by Christopher J. Brown et al

p53 Life Science Poster

A summary of the main strategies for the reactivation of p53, including small molecules and peptides, which act to stabilize p53 to rescue wild-type activity. Request copy today.

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p53 Signaling Pathway

p53 Signaling Pathway

Signals through the p53 pathway are integral in the control of the cellular response different types of stress. View pathway or download PDF today.

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SENC 2017

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September 27 - 30, 2017

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