Evidence map›Paper›PMID 22028641›Full record

ArticlePLoS computational biology2011

Ensemble-based computational approach discriminates functional activity of p53 cancer and rescue mutants.

Özlem Demir, Roberta Baronio, Faezeh Salehi, Christopher D Wassman, Linda Hall, G Wesley Hatfield, Richard Chamberlin, Peter Kaiser, Richard H Lathrop, Rommie E Amaro

Abstract read
In one paragraph

Article in PLoS computational biology, 2011. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 23 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
23citing papers in PubMed, 1 pooled it
–field-weighted citation impact
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

23 citing papers in PubMed, 1 synthesis or guideline pooled it.

  1. Targeting p53 pathways: mechanisms, structures, and advances in therapy.Signal transduction and targeted therapy · 2023
    Pooled it
  2. Article
  3. Article
  4. Article
  5. Article
  6. Article
  7. Article
  8. Article
  9. Article
  10. Article
  11. Article
  12. Review
  13. Computational Approaches to Prioritize Cancer Driver Missense Mutations.International journal of molecular sciences · 2018
    Review
  14. Article
  15. Article
  16. Structural Evolution and Dynamics of the p53 Proteins.Cold Spring Harbor perspectives in medicine · 2017
    Review
  17. Article
  18. Article
  19. Article
  20. Article
4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

10 authors.

Özlem DemirDepartment of Pharmaceutical Sciences, University of California, Irvine, California, United States of America.
Roberta Baronio
Faezeh Salehi
Christopher D Wassman
Linda Hall
G Wesley Hatfield
Richard Chamberlin
Peter Kaiser
Richard H Lathrop
Rommie E Amaro

Funding

A Functional Census of p53 Cancer and Suppressor MutantsR01CA112560 · NCI · UNIVERSITY OF CALIFORNIA-IRVINE · PI KAISER, PETER, LATHROP, RICHARD H · 2005 to 2013
$3.2M
A Structural Systems Biology Approach to Drug DiscoveryDP2OD007237 · OD · UNIVERSITY OF CALIFORNIA, SAN DIEGO · PI AMARO, ROMMIE E · 2010 to 2015
$2.9M
NCI NIH HHS CA-112560NCI NIH HHS R01 CA112560NIH HHS 1-DP2-OD007237NIH HHS DP2 OD007237
6 · The paper itself

Abstract

The tumor suppressor protein p53 can lose its function upon single-point missense mutations in the core DNA-binding domain ("cancer mutants"). Activity can be restored by second-site suppressor mutations ("rescue mutants"). This paper relates the functional activity of p53 cancer and rescue mutants to their overall molecular dynamics (MD), without focusing on local structural details. A novel global measure of protein flexibility for the p53 core DNA-binding domain, the number of clusters at a certain RMSD cutoff, was computed by clustering over 0.7 µs of explicitly solvated all-atom MD simulations. For wild-type p53 and a sample of p53 cancer or rescue mutants, the number of clusters was a good predictor of in vivo p53 functional activity in cell-based assays. This number-of-clusters (NOC) metric was strongly correlated (r(2) = 0.77) with reported values of experimentally measured ΔΔG protein thermodynamic stability. Interpreting the number of clusters as a measure of protein flexibility: (i) p53 cancer mutants were more flexible than wild-type protein, (ii) second-site rescue mutations decreased the flexibility of cancer mutants, and (iii) negative controls of non-rescue second-site mutants did not. This new method reflects the overall stability of the p53 core domain and can discriminate which second-site mutations restore activity to p53 cancer mutants.

Indexed as

Molecular Dynamics SimulationMutationHumansModels, MolecularNeoplasmsProtein BindingProtein ConformationTumor Suppressor Protein p53Tumor Suppressor Protein p53

Identifiers

PMID22028641
PMCPMC3197647

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Registered trials

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Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.