Evidence map›Paper›PMID 27573496›Full record

ArticleNature communications2016

A substrate-driven allosteric switch that enhances PDI catalytic activity.

Roelof H Bekendam, Pavan K Bendapudi, Lin Lin, Partha P Nag, Jun Pu, Daniel R Kennedy, Alexandra Feldenzer, Joyce Chiu, Kristina M Cook, Bruce Furie and 3 more

Open access · goldAbstract read
In one paragraph

Article in Nature communications, 2016. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 74 papers.

0numbers the graph read from it
0cells of the map it votes in
74citing papers in PubMed
7.8field-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

74 citing papers in PubMed, 124 citations in OpenAlex.

  1. Trial
  2. Trial
  3. Molecular mechanisms of protein disulfide isomerase antagonism by punicalagin.Biochemical and biophysical research communications · 2026
    Article
  4. Article
  5. Review
  6. Systematic determination of disulfide bond reduction potentials reveals a nonequilibrium redox hierarchy in cyanobacteria.Proceedings of the National Academy of Sciences of the United States of America · 2026
    Article
  7. Article
  8. Review
  9. Article
  10. Determining the Redox Potential of a Protein Disulfide Bond.Methods in molecular biology (Clifton, N.J.) · 2026
    Article
  11. Assays of Thiol Isomerase Activity.Methods in molecular biology (Clifton, N.J.) · 2026
    Article
  12. Review
  13. Review
  14. Article
  15. Review
  16. Article
  17. Decoding PDI diversity: Insights into structure, domains, and functionality in sorghum.Computational and structural biotechnology journal · 2025
    Article
  18. Article
  19. Article
  20. Article

14 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

13 authors at 5 institutions in 2 countries.

Roelof H BekendamDivision of Hemostasis and Thrombosis, Department of Medicine, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, Massachusetts 02115, USA.
Pavan K BendapudiDivision of Hemostasis and Thrombosis, Department of Medicine, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, Massachusetts 02115, USA.
Lin LinDivision of Hemostasis and Thrombosis, Department of Medicine, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, Massachusetts 02115, USA.
Partha P NagDepartment of Pharmaceutical and Administrative Sciences, The Broad Institute Probe Development Center, Cambridge, Massachusetts 02142, USA.
Jun PuDepartment of Pharmaceutical and Administrative Sciences, The Broad Institute Probe Development Center, Cambridge, Massachusetts 02142, USA.
Daniel R KennedyCollege of Pharmacy, Western New England University, Springfield, Massachusetts 01119, USA.
Alexandra FeldenzerCollege of Pharmacy, Western New England University, Springfield, Massachusetts 01119, USA.
Joyce ChiuThe Centenary Institute, Newtown, Sydney, New South Wales 2050, Australia.
Kristina M CookThe Centenary Institute, Newtown, Sydney, New South Wales 2050, Australia.
Bruce FurieDivision of Hemostasis and Thrombosis, Department of Medicine, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, Massachusetts 02115, USA.
Mingdong HuangDivision of Hemostasis and Thrombosis, Department of Medicine, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, Massachusetts 02115, USA.
Philip J HoggThe Centenary Institute, Newtown, Sydney, New South Wales 2050, Australia.
Robert FlaumenhaftDivision of Hemostasis and Thrombosis, Department of Medicine, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, Massachusetts 02115, USA.
Beth Israel Deaconess Medical Center · USCentenary Institute · AUHarvard University · USBroad Institute · USWestern New England University · US

Funding

User Driven ProjectU54HG005032 · NHGRI · MASSACHUSETTS INSTITUTE OF TECHNOLOGY · PI SCHREIBER, STUART L · 2008 to 2013
$88.1M
PROGRAM IN BLOOD COAGULATION AND VASCULAR BIOLOGYT32HL007917 · NHLBI · BETH ISRAEL DEACONESS MEDICAL CENTER · PI Robert C Flaumenhaft · 1999 to 2026
$11.1M
Translational Research Skills DevelopmentU54HL112302 · NHLBI · BETH ISRAEL DEACONESS MEDICAL CENTER · PI FURIE, BRUCE · 2012 to 2016
$11.1M
Training Program in Molecular HematologyT32HL116324 · NHLBI · BRIGHAM AND WOMEN'S HOSPITAL · PI NANCY BERLINER · 2013 to 2026
$7.4M
Thiol Isomerases in Hemostasis and ThrombosisR35HL135775 · NHLBI · BETH ISRAEL DEACONESS MEDICAL CENTER · PI FLAUMENHAFT, ROBERT C · 2017 to 2023
$5.5M
Targeting the Endothelium in SepsisR01HL125275 · NHLBI · BETH ISRAEL DEACONESS MEDICAL CENTER · PI FLAUMENHAFT, ROBERT C, PARIKH, SAMIR M · 2014 to 2018
$4.2M
Vascular Thiol Isomerases in ThrombosisR01HL136394 · NHLBI · BETH ISRAEL DEACONESS MEDICAL CENTER · PI ITALIANO, JOSEPH E, ZWICKER, JEFFREY · 2017 to 2020
$3.3M
MINOS (Macromolecular Insights on Nucleic acids Optimized by Scattering)R01GM105404 · NIGMS · UNIVERSITY OF CALIF-LAWRENC BERKELEY LAB · PI TAINER, JOHN A. · 2012 to 2015
$2.1M
Platelet granule exocytosis and thrombus formationR01HL112809 · NHLBI · BETH ISRAEL DEACONESS MEDICAL CENTER · PI FLAUMENHAFT, ROBERT C · 2013 to 2016
$1.8M
Identification of small molecule inhibitors of protein disulfide isomeraseR03DA032476 · NIDA · BETH ISRAEL DEACONESS MEDICAL CENTER · PI FLAUMENHAFT, ROBERT C · 2011 to 2012
$87k
NHGRI NIH HHS U54 HG005032NHLBI NIH HHS R01 HL112809NHLBI NIH HHS R01 HL125275NHLBI NIH HHS R01 HL136394NHLBI NIH HHS R35 HL135775NHLBI NIH HHS T32 HL007917NHLBI NIH HHS T32 HL116324NHLBI NIH HHS U54 HL112302NIDA NIH HHS R03 DA032476NIGMS NIH HHS R01 GM105404
6 · The paper itself

Abstract

Protein disulfide isomerase (PDI) is an oxidoreductase essential for folding proteins in the endoplasmic reticulum. The domain structure of PDI is a-b-b'-x-a', wherein the thioredoxin-like a and a' domains mediate disulfide bond shuffling and b and b' domains are substrate binding. The b' and a' domains are connected via the x-linker, a 19-amino-acid flexible peptide. Here we identify a class of compounds, termed bepristats, that target the substrate-binding pocket of b'. Bepristats reversibly block substrate binding and inhibit platelet aggregation and thrombus formation in vivo. Ligation of the substrate-binding pocket by bepristats paradoxically enhances catalytic activity of a and a' by displacing the x-linker, which acts as an allosteric switch to augment reductase activity in the catalytic domains. This substrate-driven allosteric switch is also activated by peptides and proteins and is present in other thiol isomerases. Our results demonstrate a mechanism whereby binding of a substrate to thiol isomerases enhances catalytic activity of remote domains.

Indexed as

Protein FoldingAllosteric RegulationAnimalsBlood PlateletsCatalytic DomainDisease Models, AnimalDrug Evaluation, PreclinicalEndoplasmic ReticulumEnzyme InhibitorsHealthy VolunteersHumansHydrophobic and Hydrophilic InteractionsInsulinMaleMiceMice, Inbred C57BLEnzyme InhibitorsInsulinProtein Disulfide-IsomerasesRecombinant Proteins

Identifiers

PMID27573496
PMCPMC5013553
OpenAlexW2514141298

What OpenQuestion holds

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LicenceCC BY
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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.