Evidence map›Paper›PMID 27884606›Full record

ArticleJournal of molecular biology2017

BAG3 Is a Modular, Scaffolding Protein that physically Links Heat Shock Protein 70 (Hsp70) to the Small Heat Shock Proteins.

Jennifer N Rauch, Eric Tse, Rebecca Freilich, Sue-Ann Mok, Leah N Makley, Daniel R Southworth, Jason E Gestwicki

Abstract read
In one paragraph

Article in Journal of molecular biology, 2017. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 85 papers.

0numbers the graph read from it
0cells of the map it votes in
85citing papers in PubMed
8.9field-weighted citation impact, top 2% 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

85 citing papers in PubMed, 138 citations in OpenAlex.

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25 more citing papers are in PubMed but not listed here.

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

7 authors at 1 institution in 1 country.

Jennifer N RauchDepartment of Pharmaceutical Chemistry, Institute for Neurodegenerative Disease, University of California at San Francisco, San Francisco, CA 94158, USA.
Eric TseDepartment of Biological Chemistry, Life Sciences Institute, University of Michigan, Ann Arbor, MI 48109, USA.
Rebecca FreilichDepartment of Pharmaceutical Chemistry, Institute for Neurodegenerative Disease, University of California at San Francisco, San Francisco, CA 94158, USA.
Sue-Ann MokDepartment of Pharmaceutical Chemistry, Institute for Neurodegenerative Disease, University of California at San Francisco, San Francisco, CA 94158, USA.
Leah N MakleyDepartment of Pharmaceutical Chemistry, Institute for Neurodegenerative Disease, University of California at San Francisco, San Francisco, CA 94158, USA.
Daniel R SouthworthDepartment of Biological Chemistry, Life Sciences Institute, University of Michigan, Ann Arbor, MI 48109, USA.
Jason E GestwickiDepartment of Pharmaceutical Chemistry, Institute for Neurodegenerative Disease, University of California at San Francisco, San Francisco, CA 94158, USA. Electronic address: jason.gestwicki@ucsf.edu.
University of Michigan–Ann Arbor · US

Funding

Structure/Function Studies of Small Heat Shock ProteinsR01EY017370 · NEI · UNIVERSITY OF WASHINGTON · PI KLEVIT, RACHEL E · 2007 to 2024
$8.0M
Molecular Chaperones and Small MoleculesR01NS059690 · NINDS · UNIVERSITY OF MICHIGAN AT ANN ARBOR · PI Jason E Gestwicki · 2008 to 2026
$7.9M
RESEARCH TRAINING IN CHEMISTRY AND CHEMICAL BIOLOGYT32GM064337 · NIGMS · UNIVERSITY OF CALIFORNIA, SAN FRANCISCO · PI CRAIK, CHARLES SCOTT · 2002 to 2021
$7.8M
Exploration of Molecular Chaperone Complexes During Active Protein TriageR01GM109896 · NIGMS · UNIVERSITY OF MICHIGAN AT ANN ARBOR · PI ANDREWS, PHILIP C, GESTWICKI, JASON E · 2014 to 2017
$1.1M
NEI NIH HHS R01 EY017370NIGMS NIH HHS R01 GM109896NIGMS NIH HHS T32 GM064337NINDS NIH HHS R01 NS059690
6 · The paper itself

Abstract

Small heat shock proteins (sHsps) are a family of ATP-independent molecular chaperones that are important for binding and stabilizing unfolded proteins. In this task, the sHsps have been proposed to coordinate with ATP-dependent chaperones, including heat shock protein 70 (Hsp70). However, it is not yet clear how these two important components of the chaperone network are linked. We report that the Hsp70 co-chaperone, BAG3, is a modular, scaffolding factor to bring together sHsps and Hsp70s. Using domain deletions and point mutations, we found that BAG3 uses both of its IPV motifs to interact with sHsps, including Hsp27 (HspB1), αB-crystallin (HspB5), Hsp22 (HspB8), and Hsp20 (HspB6). BAG3 does not appear to be a passive scaffolding factor; rather, its binding promoted de-oligomerization of Hsp27, likely by competing for the self-interactions that normally stabilize large oligomers. BAG3 bound to Hsp70 at the same time as Hsp22, Hsp27, or αB-crystallin, suggesting that it might physically bring the chaperone families together into a complex. Indeed, addition of BAG3 coordinated the ability of Hsp22 and Hsp70 to refold denatured luciferase in vitro. Together, these results suggest that BAG3 physically and functionally links Hsp70 and sHsps.

Indexed as

Adaptor Proteins, Signal TransducingApoptosis Regulatory ProteinsDNA Mutational AnalysisHeat-Shock Proteins, SmallHSP70 Heat-Shock ProteinsHumansProtein BindingAdaptor Proteins, Signal TransducingApoptosis Regulatory ProteinsBAG3 protein, humanHeat-Shock Proteins, SmallHSP70 Heat-Shock ProteinschaperonesHsp27intrinsically disordered proteinsprotein foldingproteostasis

Identifiers

PMID27884606
PMCPMC5186407
OpenAlexW2555344087

What OpenQuestion holds

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LicenceTDM
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.