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Related Experiment Videos

Snake venom disintegrins: evolution of structure and function.

Juan J Calvete1, Cezary Marcinkiewicz, Daniel Monleón

  • 1Instituto de Biomedicina de Valencia, C.S.I.C., Jaume Roig 11, 46010 Valencia, Spain. jcalvete@ibv.csic.es

Toxicon : Official Journal of the International Society on Toxinology
|June 1, 2005
PubMed
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Disintegrins, viper venom polypeptides, block integrin receptors. Their diversification arises from accelerated evolution and gene duplication, offering insights into integrin recognition for research.

Area of Science:

  • Biochemistry
  • Molecular Biology
  • Pharmacology

Background:

  • Disintegrins are a class of polypeptides found in viper venoms.
  • They function by selectively inhibiting integrin receptors.
  • Integrins are crucial cell surface receptors involved in cell adhesion and signaling.

Purpose of the Study:

  • To review the emergence and diversification of disintegrins.
  • To explore the role of accelerated evolution and gene duplication in disintegrin evolution.
  • To discuss structural determinants of integrin recognition by disintegrins for research applications.

Main Methods:

  • Review of existing literature on disintegrin structure, function, and evolution.
  • Analysis of hypotheses regarding gene duplication and loss of disulfide bonds.

Related Experiment Videos

  • Discussion of structure-function relationships in integrin inhibition.

    • Main Results:

    • Disintegrins diversify through accelerated evolution and selective loss of disulfide bonds in duplicated genes.
    • Specific structural features, including the inhibitory loop and C-terminal tail, dictate integrin selectivity.
    • Understanding these mechanisms provides insights into integrin biology.

    Conclusions:

    • Disintegrin evolution is shaped by rapid evolutionary processes.
    • Structural elements of disintegrins are key to their selective integrin inhibition.
    • Disintegrins serve as valuable tools for basic and clinical research on integrin function.