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Related Experiment Video

Updated: May 23, 2026

Investigating von Willebrand Factor Pathophysiology Using a Flow Chamber Model of von Willebrand Factor-platelet String Formation
08:30

Investigating von Willebrand Factor Pathophysiology Using a Flow Chamber Model of von Willebrand Factor-platelet String Formation

Published on: August 14, 2017

Sequence and structure relationships within von Willebrand factor.

Yan-Feng Zhou1, Edward T Eng, Jieqing Zhu

  • 1Department of Biological Chemistry and Molecular Pharmacology, Immune Disease Institute and Children's Hospital, Harvard Medical School, Boston, MA 02115, USA.

Blood
|April 12, 2012
PubMed
Summary
This summary is machine-generated.

Researchers re-annotated von Willebrand factor (VWF) structure, mapping its modules to specific functions. This study reveals how VWF domains assemble and interact, providing insights into its biological roles.

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Last Updated: May 23, 2026

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Area of Science:

  • Biochemistry
  • Structural Biology
  • Molecular Biology

Background:

  • Von Willebrand factor (VWF) is crucial for hemostasis.
  • Understanding VWF's modular structure is key to its function.
  • Previous VWF structural annotations were incomplete.

Purpose of the Study:

  • To re-annotate the VWF sequence into functional modules.
  • To correlate these modules with their three-dimensional structure.
  • To elucidate the structural basis of VWF's interactions.

Main Methods:

  • Electron microscopy (EM) for high-resolution structural visualization.
  • Sequence re-annotation based on structural findings.
  • Homology modeling to predict disulfide bond assignments.

Main Results:

  • VWF D domains are assemblies of smaller modules (D, 8-cysteine, TIL, E, Fn1-like, D4N).
  • VWF prodomain (D1-D2) consists of two large, lobed assemblies.
  • Six tandem VWC/VWC-like domains form the VWF stem, associating in pairs at acidic pH.
  • The C-terminal cystine knot domain dimerizes and orients perpendicularly to VWC domains.

Conclusions:

  • The study provides a detailed modular map of VWF structure.
  • This structural understanding explains VWF's multimeric assembly and interactions.
  • Identified structural features may inform VWF's role in integrin binding and hemostasis.