Evidence map›Paper›PMID 29084938›Full record

ArticleNature communications2017

Conformation transitions of the polypeptide-binding pocket support an active substrate release from Hsp70s.

Jiao Yang, Yinong Zong, Jiayue Su, Hongtao Li, Huanyu Zhu, Linda Columbus, Lei Zhou, Qinglian Liu

Open access · goldAbstract read
In one paragraph

Article in Nature communications, 2017. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 49 papers.

0numbers the graph read from it
0cells of the map it votes in
49citing papers in PubMed
3.0field-weighted citation impact, top 8% 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

49 citing papers in PubMed, 76 citations in OpenAlex.

  1. A Small Molecule Substrate Mimic to Inhibit Bacterial Hsp70 Chaperone Function.Chembiochem : a European journal of chemical biology · 2026
    Article
  2. Immunoglobulin binding protein (BiP) forms two types of dimers.Protein science : a publication of the Protein Society · 2026
    Article
  3. Review
  4. Enhancing Cytosolic Internalization of [International journal of molecular sciences · 2025
    Article
  5. Conformational plasticity of a BiP-GRP94 chaperone complex.Nature structural & molecular biology · 2025
    Article
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  7. Article
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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

8 authors at 2 institutions in 1 country.

Jiao YangDepartment of Physiology and Biophysics, Virginia Commonwealth University, Richmond, VA, 23298, USA.
Yinong ZongDepartment of Physiology and Biophysics, Virginia Commonwealth University, Richmond, VA, 23298, USA.
Jiayue SuDepartment of Physiology and Biophysics, Virginia Commonwealth University, Richmond, VA, 23298, USA.
Hongtao LiDepartment of Physiology and Biophysics, Virginia Commonwealth University, Richmond, VA, 23298, USA.
Huanyu ZhuDepartment of Physiology and Biophysics, Virginia Commonwealth University, Richmond, VA, 23298, USA.
Linda ColumbusDepartment of Chemistry, University of Virginia, Charlottesville, VA, 22908, USA.
Lei ZhouDepartment of Physiology and Biophysics, Virginia Commonwealth University, Richmond, VA, 23298, USA.
Qinglian LiuDepartment of Physiology and Biophysics, Virginia Commonwealth University, Richmond, VA, 23298, USA. qinglian.liu@vcuhealth.org.
Virginia Commonwealth University · USUniversity of Virginia · US

Funding

Structural and Functional Studies of Hsp70 Molecular ChaperonesR01GM098592 · NIGMS · VIRGINIA COMMONWEALTH UNIVERSITY · PI Qinglian Liu · 2013 to 2026
$4.3M
Molecular biophysics of cAMP regulation in HCN channelsR01GM109193 · NIGMS · VIRGINIA COMMONWEALTH UNIVERSITY · PI LIU, QINGLIAN, ZHOU, LEI · 2014 to 2017
$1.4M
NIGMS NIH HHS R01 GM098592NIGMS NIH HHS R01 GM109193
6 · The paper itself

Abstract

Cellular protein homeostasis depends on heat shock proteins 70 kDa (Hsp70s), a class of ubiquitous and highly conserved molecular chaperone. Key to the chaperone activity is an ATP-induced allosteric regulation of polypeptide substrate binding and release. To illuminate the molecular mechanism of this allosteric coupling, here we present a novel crystal structure of an intact human BiP, an essential Hsp70 in ER, in an ATP-bound state. Strikingly, the polypeptide-binding pocket is completely closed, seemingly excluding any substrate binding. Our FRET, biochemical and EPR analysis suggests that this fully closed conformation is the major conformation for the ATP-bound state in solution, providing evidence for an active release of bound polypeptide substrates following ATP binding. The Hsp40 co-chaperone converts this fully closed conformation to an open conformation to initiate productive substrate binding. Taken together, this study provided a mechanistic understanding of the dynamic nature of the polypeptide-binding pocket in the Hsp70 chaperone cycle.

Indexed as

Adenosine TriphosphateBinding SitesConserved SequenceCrystallography, X-RayEndoplasmic Reticulum Chaperone BiPGlycineHeat-Shock ProteinsHSP40 Heat-Shock ProteinsHSP70 Heat-Shock ProteinsHumansModels, BiologicalModels, MolecularPeptidesProtein ConformationSubstrate SpecificityAdenosine TriphosphateEndoplasmic Reticulum Chaperone BiPGlycineHeat-Shock ProteinsHSP40 Heat-Shock ProteinsHSP70 Heat-Shock ProteinsPeptides

Identifiers

PMID29084938
PMCPMC5662698
OpenAlexW2765807058

What OpenQuestion holds

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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.