Evidence map›Paper›PMID 33684942›Full record

ArticleBlood2021

Cryo-EM structures of human coagulation factors V and Va.

Eliza A Ruben, Michael J Rau, James A J Fitzpatrick, Enrico Di Cera

Open access · bronzeAbstract read
In one paragraph

Article in Blood, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 30 papers.

0numbers the graph read from it
0cells of the map it votes in
30citing papers in PubMed
5.8field-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

30 citing papers in PubMed, 49 citations in OpenAlex.

  1. Review
  2. Cryogenic electron microscopy and coagulation factors.Current opinion in hematology · 2026
    Review
  3. Review
  4. Article
  5. Article
  6. Article
  7. Article
  8. Article
  9. Article
  10. Review
  11. Review
  12. Article
  13. Article
  14. Article
  15. Factor V variants in bleeding and thrombosis.Research and practice in thrombosis and haemostasis · 2024
    Article
  16. The Prothrombin-Prothrombinase Interaction.Sub-cellular biochemistry · 2024
    Review
  17. Article
  18. Article
  19. Article
  20. Article
4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

4 authors at 3 institutions in 1 country.

Eliza A RubenEdward A. Doisy Department of Biochemistry and Molecular Biology, Saint Louis University School of Medicine, St Louis, MO.ORCID 0000-0003-2748-5530
Michael J RauWashington University Center for Cellular Imaging.ORCID 0000-0001-5170-2000
James A J FitzpatrickWashington University Center for Cellular Imaging.ORCID 0000-0002-7907-3602
Enrico Di CeraEdward A. Doisy Department of Biochemistry and Molecular Biology, Saint Louis University School of Medicine, St Louis, MO.ORCID 0000-0003-2300-4891
Saint Louis University · USWashington Center · USWashington University in St. Louis · US

Funding

Washington University Center for Cellular ImagingP30CA091842 · NCI · WASHINGTON UNIVERSITY · PI TIMOTHY J. EBERLEIN · 2001 to 2026
$128.0M
WU P&FP30DK020579 · NIDDK · WASHINGTON UNIVERSITY · PI Jennifer Lynn Powers Carson · 2013 to 2026
$27.1M
TRANSGENICS COREP60DK020579 · NIDDK · WASHINGTON UNIVERSITY · PI SCHAFFER, JEAN E. · 1986 to 2012
$25.2M
STUDIES ON THROMBIN ALLOSTERYR01HL049413 · NHLBI · WASHINGTON UNIVERSITY · PI Enrico Di Cera · 2000 to 2026
$9.6M
Structural enzymology of factor V activationR01HL147821 · NHLBI · SAINT LOUIS UNIVERSITY · PI Enrico Di Cera · 2019 to 2026
$3.7M
Structural enzymology of protein CR01HL139554 · NHLBI · SAINT LOUIS UNIVERSITY · PI DI CERA, ENRICO · 2018 to 2025
$3.7M
BIOPHYSICAL STUDIES OF THROMBINR29HL049413 · NHLBI · WASHINGTON UNIVERSITY · PI DI CERA, ENRICO · 1995 to 1999
–
NCI NIH HHS P30 CA091842NHLBI NIH HHS R01 HL049413NHLBI NIH HHS R01 HL139554NHLBI NIH HHS R01 HL147821NHLBI NIH HHS R29 HL049413NIDDK NIH HHS P30 DK020579NIDDK NIH HHS P60 DK020579
6 · The paper itself

Abstract

Coagulation factor V (fV) is the precursor of fVa, which, together with fXa, Ca2+, and phospholipids, defines the prothrombinase complex and activates prothrombin in the penultimate step of the coagulation cascade. We solved the cryogenic electron microscopy (cryo-EM) structures of human fV and fVa at atomic (3.3 Å) and near-atomic (4.4 Å) resolution, respectively. The structure of fV reveals the entire A1-A2-B-A3-C1-C2 assembly, but with a surprisingly disordered B domain. The C1 and C2 domains provide a platform for interaction with phospholipid membranes and support the A1 and A3 domains, with the A2 domain sitting on top of them. The B domain is highly dynamic and visible only for short segments connecting to the A2 and A3 domains. The A2 domain reveals all sites of proteolytic processing by thrombin and activated protein C, a partially buried epitope for binding fXa, and fully exposed epitopes for binding activated protein C and prothrombin. Removal of the B domain and activation to fVa exposes the sites of cleavage by activated protein C at R306 and R506 and produces increased disorder in the A1-A2-A3-C1-C2 assembly, especially in the C-terminal acidic portion of the A2 domain that is responsible for prothrombin binding. Ordering of this region and full exposure of the fXa epitope emerge as necessary steps in the assembly of the prothrombin-prothrombinase complex. These structures offer molecular context for the function of fV and fVa and pioneer the analysis of coagulation factors by cryo-EM.

Indexed as

Cryoelectron MicroscopyFactor VaHumansProtein DomainsFactor Va

Identifiers

PMID33684942
PMCPMC8176766
OpenAlexW3135190541

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.