Evidence map›Paper›PMID 20959805›Full record

ArticleThe EMBO journal2010

Tyrosine dephosphorylation is required for Bak activation in apoptosis.

Joanna L Fox, Ferina Ismail, Abul Azad, Nicola Ternette, Sabrina Leverrier, Mariola J Edelmann, Benedikt M Kessler, Irene M Leigh, Sarah Jackson, Alan Storey

Open access · bronzeAbstract read
In one paragraph

Article in The EMBO journal, 2010. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 28 papers.

0numbers the graph read from it
0cells of the map it votes in
28citing papers in PubMed
1.4field-weighted citation impact, top 20% of its field
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

28 citing papers in PubMed, 45 citations in OpenAlex.

  1. Article
  2. Review
  3. Review
  4. Review
  5. Article
  6. Article
  7. Article
  8. Review
  9. Review
  10. Article
  11. Article
  12. Role of Notch signaling pathway in pancreatic cancer.American journal of cancer research · 2017
    Review
  13. Review
  14. Review
  15. Article
  16. 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 at 6 institutions in 3 countries.

Joanna L FoxDepartment of Molecular Oncology, Weatherall Institute of Molecular Medicine, University of Oxford, John Radcliffe Hospital, UK.
Ferina Ismail
Abul Azad
Nicola Ternette
Sabrina Leverrier
Mariola J Edelmann
Benedikt M Kessler
Irene M Leigh
Sarah Jackson
Alan Storey
University of Oxford · GBCentre for Human Genetics · GBInstitute of Molecular Medicine · INUC Irvine Health · USUniversity of Cumbria · GBUniversity of Dundee · GB

Funding

Cancer Research UKMedical Research Council G0501068Medical Research Council G84/6471
6 · The paper itself

Abstract

Activation of the cell-death mediator Bak commits a cell to mitochondrial apoptosis. The initial steps that govern Bak activation are poorly understood. To further clarify these pivotal events, we have investigated whether post-translational modifications of Bak impinge on its activation potential. In this study, we report that on apoptotic stimulation Bak undergoes dephosphorylation at tyrosine residue 108 (Y108), a critical event that is necessary but not sufficient for Bak activation, but is required both for early exposure of the occluded N-terminal domain and multimerisation. RNA interference (RNAi) screening identified non-receptor tyrosine phosphatases (PTPNs) required for Bak dephosphorylation and apoptotic induction through chemotherapeutic agents. Specifically, modulation of PTPN5 protein expression by siRNA and overexpression directly affected both Bak-Y108 phosphorylation and the initiation of Bak activation. We further show that MEK/ERK signalling directly affects Bak phosphorylation through inhibition of PTPN5 to promote cell survival. We propose a model of Bak activation in which the regulation of Bak dephosphorylation constitutes the initial step in the activation process, which reveals a previously unsuspected mechanism controlling the initiation of mitochondrial apoptosis.

Indexed as

ApoptosisAmino Acid SequenceAnimalsbcl-2 Homologous Antagonist-Killer ProteinCell LineExtracellular Signal-Regulated MAP KinasesHumansMitochondriaMolecular Sequence DataPhosphorylationProtein Tyrosine Phosphatases, Non-ReceptorSerineThreonineTyrosinebcl-2 Homologous Antagonist-Killer ProteinExtracellular Signal-Regulated MAP KinasesProtein Tyrosine Phosphatases, Non-ReceptorPTPN5 protein, humanSerineThreonineTyrosine

Identifiers

PMID20959805
PMCPMC2989102
OpenAlexW2055516802

What OpenQuestion holds

Textmetadata
Read underepoch 390

Registered trials

None linked

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.