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Related Experiment Videos

Factor V activation and inactivation by venom proteases.

J Rosing1, J W Govers-Riemslag, L Yukelson

  • 1Department of Biochemistry, Cardiovascular Research Institute, University of Maastricht, PO Box 616, NL-6200 MD Maastricht, The Netherlands. j.rosing@bioch.unimaas.nl

Haemostasis
|March 23, 2002
PubMed
Summary

Animal venoms activate or inactivate blood coagulation factor V, impacting its role in clotting pathways. These venom factors offer insights into factor V function and aid in diagnostic tests.

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Area of Science:

  • Biochemistry
  • Hematology
  • Toxicology

Background:

  • Blood coagulation factor V is crucial for both procoagulant and anticoagulant pathways.
  • Thrombin converts factor V to factor Va, a potent cofactor enhancing thrombin-mediated prothrombin activation.
  • Activated protein C regulates factor Va activity in physiological conditions.

Purpose of the Study:

  • To review the structural and functional characteristics of animal venom-derived factor V activators and inactivators.
  • To highlight the utility of venom factors in understanding factor V(a) structure-function relationships.
  • To discuss the application of venom factors in diagnostic assays for factor V levels and protein C pathway defects.

Main Methods:

  • Literature review of studies on animal venom proteases affecting factor V.

Related Experiment Videos

  • Analysis of structural and functional data on factor V activation and inactivation by venoms.
  • Examination of the use of venom factors in diagnostic methodologies.

    • Main Results:

    • Various snake venoms and caterpillar proteases can activate factor V.
    • Specific venoms, like Vipera lebetina turanica and Lonomia achelous, possess proteases that inactivate factor V or Va.
    • Venom activators serve as valuable tools for structure-function studies and diagnostics.

    Conclusions:

    • Animal venom components exhibit diverse effects on blood coagulation factor V, acting as both activators and inactivators.
    • These venom-derived factors are instrumental in advancing the understanding of factor V biology.
    • Venom activators and inactivators have significant applications in clinical diagnostics related to hemostasis.