Evidence map›Paper›PMID 25774599›Full record

ArticleeLife2015

Actin dynamics tune the integrated stress response by regulating eukaryotic initiation factor 2α dephosphorylation.

Joseph E Chambers, Lucy E Dalton, Hanna J Clarke, Elke Malzer, Caia S Dominicus, Vruti Patel, Greg Moorhead, David Ron, Stefan J Marciniak

Open access · goldAbstract read
In one paragraph

Article in eLife, 2015. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 50 papers.

0numbers the graph read from it
0cells of the map it votes in
50citing papers in PubMed
4.5field-weighted citation impact, top 5% 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

50 citing papers in PubMed, 85 citations in OpenAlex.

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  12. Regulation and outcomes of localized RNA translation.Wiley interdisciplinary reviews. RNA · 2022
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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

9 authors at 2 institutions in 2 countries.

Joseph E ChambersCambridge Institute for Medical Research, Department of Medicine, University of Cambridge, Cambridge, United Kingdom.
Lucy E DaltonCambridge Institute for Medical Research, Department of Medicine, University of Cambridge, Cambridge, United Kingdom.
Hanna J ClarkeWellcome Trust MRC Building, University of Cambridge, Cambridge, United Kingdom.
Elke MalzerCambridge Institute for Medical Research, Department of Medicine, University of Cambridge, Cambridge, United Kingdom.
Caia S DominicusCambridge Institute for Medical Research, Department of Medicine, University of Cambridge, Cambridge, United Kingdom.
Vruti PatelCambridge Institute for Medical Research, Department of Medicine, University of Cambridge, Cambridge, United Kingdom.
Greg MoorheadDepartment of Biological Sciences, University of Calgary, Calgary, Canada.
David RonWellcome Trust MRC Building, University of Cambridge, Cambridge, United Kingdom.ORCID http://orcid.org/0000-0002-3014-5636
Stefan J MarciniakWellcome Trust MRC Building, University of Cambridge, Cambridge, United Kingdom.ORCID http://orcid.org/0000-0001-8472-7183
University of Cambridge · GBUniversity of Calgary · CA

Funding

Medical Research Council G0601840Medical Research Council G1002610Medical Research Council MR/M010392/1Wellcome Trust 084812Wellcome Trust 084812/Z/08/ZWellcome Trust 100140
6 · The paper itself

Abstract

Four stress-sensing kinases phosphorylate the alpha subunit of eukaryotic translation initiation factor 2 (eIF2α) to activate the integrated stress response (ISR). In animals, the ISR is antagonised by selective eIF2α phosphatases comprising a catalytic protein phosphatase 1 (PP1) subunit in complex with a PPP1R15-type regulatory subunit. An unbiased search for additional conserved components of the PPP1R15-PP1 phosphatase identified monomeric G-actin. Like PP1, G-actin associated with the functional core of PPP1R15 family members and G-actin depletion, by the marine toxin jasplakinolide, destabilised the endogenous PPP1R15A-PP1 complex. The abundance of the ternary PPP1R15-PP1-G-actin complex was responsive to global changes in the polymeric status of actin, as was its eIF2α-directed phosphatase activity, while localised G-actin depletion at sites enriched for PPP1R15 enhanced eIF2α phosphorylation and the downstream ISR. G-actin's role as a stabilizer of the PPP1R15-containing holophosphatase provides a mechanism for integrating signals regulating actin dynamics with stresses that trigger the ISR.

Indexed as

Stress, PhysiologicalActinsAmino Acid SequenceAnimalsConserved SequenceDepsipeptidesDrosophila melanogasterEukaryotic Initiation Factor-2HEK293 CellsHumansMiceMolecular Sequence DataPhosphorylationProtein BindingProtein Phosphatase 1ActinsDepsipeptidesEukaryotic Initiation Factor-2jasplakinolidePPP1R15A protein, humanProtein Phosphatase 1actinbiochemistrycell biologyCRePD. melanogasterGADD34humanintegrated stress responsemousePPP1R15APPP1R15B

Identifiers

PMID25774599
PMCPMC4394351
OpenAlexW2134957581

What OpenQuestion holds

Textmetadata
LicenceCC BY
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.