Evidence map›Paper›PMID 24014022›Full record

ArticleThe Journal of biological chemistry2013

Restoring the procofactor state of factor Va-like variants by complementation with B-domain peptides.

Matthew W Bunce, Mettine H A Bos, Sriram Krishnaswamy, Rodney M Camire

Open access · hybridAbstract read
In one paragraph

Article in The Journal of biological chemistry, 2013. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 21 papers.

0numbers the graph read from it
0cells of the map it votes in
21citing papers in PubMed
1.6field-weighted citation impact, top 18% 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

21 citing papers in PubMed, 30 citations in OpenAlex.

  1. Article
  2. Review
  3. Article
  4. Article
  5. Article
  6. Factor V east Texas variant causes bleeding in a three-generation family.Journal of thrombosis and haemostasis : JTH · 2022
    Article
  7. Article
  8. Article
  9. F5-Atlanta: Factor V-short strikes again.Journal of thrombosis and haemostasis : JTH · 2021
    Article
  10. Article
  11. Review
  12. Article
  13. Article
  14. Article
  15. Article
  16. Article
  17. Article
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  20. Review
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

4 authors at 2 institutions in 1 country.

Matthew W BunceFrom the Division of Hematology, The Children's Hospital of Philadelphia and.
Mettine H A BosFrom the Division of Hematology, The Children's Hospital of Philadelphia and.
Sriram KrishnaswamyFrom the Division of Hematology, The Children's Hospital of Philadelphia and; the Department of Pediatrics, Perelman School of Medicine, The University of Pennsylvania, Philadelphia, Pennsylvania 19104.
Rodney M CamireFrom the Division of Hematology, The Children's Hospital of Philadelphia and; the Department of Pediatrics, Perelman School of Medicine, The University of Pennsylvania, Philadelphia, Pennsylvania 19104. Electronic address: rcamire@mail.med.upenn.edu.
Children's Hospital of Philadelphia · USUniversity of Pennsylvania · US

Funding

Structural Correlates of Protease and Cofactor FunctionP01HL074124 · NHLBI · CHILDREN'S HOSP OF PHILADELPHIA · PI KRISHNASWAMY, SRIRAM · 2003 to 2013
$17.6M
HEMATOLOGY CLINICAL RESEARCH TRAINING PROGRAMT32HL007439 · NHLBI · UNIVERSITY OF PENNSYLVANIA · PI LAWRENCE F BRASS, PETER S KLEIN · 1985 to 2026
$17.1M
Proteinase Allostery and the Regulation of Blood CoagulationR01HL108933 · NHLBI · CHILDREN'S HOSP OF PHILADELPHIA · PI KRISHNASWAMY, SRIRAM · 2011 to 2014
$1.6M
Molecular Basis of Procofactor ActivationR01HL088010 · NHLBI · CHILDREN'S HOSP OF PHILADELPHIA · PI CAMIRE, RODNEY M · 2008 to 2012
$1.6M
NHLBI NIH HHS P01 HL074124NHLBI NIH HHS P01 HL74124NHLBI NIH HHS R01 HL088010NHLBI NIH HHS R01 HL108933NHLBI NIH HHS R01 HL88010NHLBI NIH HHS T32 HL007439NHLBI NIH HHS T32HL-07439
6 · The paper itself

Abstract

Coagulation factor V (FV) circulates as an inactive procofactor and is activated to FVa by proteolytic removal of a large inhibitory B-domain. Conserved basic and acidic sequences within the B-domain appear to play an important role in keeping FV as an inactive procofactor. Here, we utilized recombinant B-domain fragments to elucidate the mechanism of this FV autoinhibition. We show that a fragment encoding the basic region (BR) of the B-domain binds with high affinity to cofactor-like FV(a) variants that harbor an intact acidic region. Furthermore, the BR inhibits procoagulant function of the variants, thereby restoring the procofactor state. The BR competes with FXa for binding to FV(a), and limited proteolysis of the B-domain, specifically at Arg(1545), ablates BR binding to promote high affinity association between FVa and FXa. These results provide new insight into the mechanism by which the B-domain stabilizes FV as an inactive procofactor and reveal how limited proteolysis of FV progressively destabilizes key regulatory regions of the B-domain to produce an active form of the molecule.

Indexed as

ProteolysisFactor VaFactor XaHumansPeptidesProtein BindingProtein Structure, TertiaryFactor VaFactor XaPeptidesAutoinhibitionCoagulation FactorsEnzyme MechanismsFactor VFactor VaHemostasisProtein EngineeringProthrombinaseRecombinant Protein Expression

Identifiers

PMID24014022
PMCPMC3798483
OpenAlexW1988267589

What OpenQuestion holds

Textmetadata
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.