Evidence map›Paper›PMID 26655470›Full record

ArticleStructure (London, England : 1993)2015

Close and Allosteric Opening of the Polypeptide-Binding Site in a Human Hsp70 Chaperone BiP.

Jiao Yang, Melesse Nune, Yinong Zong, Lei Zhou, Qinglian Liu

Open access · bronzeAbstract read
In one paragraph

Article in Structure (London, England : 1993), 2015. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 104 papers.

0numbers the graph read from it
0cells of the map it votes in
104citing papers in PubMed
6.0field-weighted citation impact, top 3% 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

104 citing papers in PubMed, 199 citations in OpenAlex.

  1. Review
  2. Immunoglobulin binding protein (BiP) forms two types of dimers.Protein science : a publication of the Protein Society · 2026
    Article
  3. Article
  4. Review
  5. Article
  6. Functional Characterization ofInternational journal of molecular sciences · 2026
    Article
  7. Article
  8. Conformational plasticity of a BiP-GRP94 chaperone complex.Nature structural & molecular biology · 2025
    Article
  9. The functional dynamics of FicD's TPR domain are modulated by the interaction with ATP and BiP.Proceedings of the National Academy of Sciences of the United States of America · 2025
    Article
  10. Article
  11. Review
  12. Article
  13. Article
  14. Article
  15. Review
  16. Article
  17. Article
  18. Article
  19. Article
  20. Article

44 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

5 authors at 1 institution in 1 country.

Jiao YangDepartment of Physiology and Biophysics, Virginia Commonwealth University, Richmond, VA 23298, USA.
Melesse NuneDepartment of Physiology and Biophysics, Virginia Commonwealth University, Richmond, VA 23298, USA.
Yinong ZongDepartment of Physiology and Biophysics, Virginia Commonwealth University, Richmond, VA 23298, 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. Electronic address: qinglian.liu@vcuhealth.org.
Virginia Commonwealth University · 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 1R01GM098592NIGMS NIH HHS 1R01GM109193NIGMS NIH HHS R01 GM098592NIGMS NIH HHS R01 GM109193
6 · The paper itself

Abstract

Binding immunoglobulin protein (BiP), an essential and ubiquitous Hsp70 chaperone in the ER, plays a key role in protein folding and quality control. BiP contains two functional domains: a nucleotide-binding domain (NBD) and a substrate-binding domain (SBD). NBD binds and hydrolyzes ATP; the substrates for SBD are extended polypeptides. ATP binding allosterically accelerates polypeptide binding and release. Although crucial to the chaperone activity, the molecular mechanisms of polypeptide binding and allosteric coupling of BiP are poorly understood. Here, we present crystal structures of an intact human BiP in the ATP-bound state, the first intact eukaryotic Hsp70 structure, and isolated BiP-SBD with a peptide substrate bound representing the ADP-bound state. These structures and our biochemical analysis demonstrate that BiP has a unique NBD-SBD interface that is highly conserved only in eukaryotic Hsp70s found in the cytosol and ER to fortify its ATP-bound state and promote the opening of its polypeptide-binding pocket.

Indexed as

Allosteric SiteAdenosine TriphosphateAmino Acid SequenceConserved SequenceHSP70 Heat-Shock ProteinsHumansMolecular Sequence DataPeptidesProtein BindingAdenosine TriphosphateHSP70 Heat-Shock ProteinsPeptides

Identifiers

PMID26655470
PMCPMC4680848
OpenAlexW2180270062

What OpenQuestion holds

Textmetadata
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.