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Annexins: from structure to function

J Benz1, A Hofmann

  • 1Max-Planck-Institut für Biochemie, Abteilung Strukturforschung, Martinsried, Germany.

Biological Chemistry
|March 1, 1997
PubMed
Summary
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Annexins are calcium-dependent phospholipid-binding proteins. Structural studies aim to clarify their in vivo functions, exploring roles in membrane binding and ion channel activity.

Area of Science:

  • Biochemistry
  • Molecular Biology
  • Structural Biology

Background:

  • Annexins are a widespread family of calcium-dependent phospholipid-binding proteins found across eukaryotes.
  • Despite extensive structural investigation over the past two decades, their precise in vivo functions remain largely undetermined.
  • The determination of human annexin V crystal structure marked a significant advancement in understanding this protein family.

Purpose of the Study:

  • To elucidate the in vivo functions of annexins.
  • To leverage structural data for functional investigations.
  • To explore potential roles in membrane binding and ion channel activity.

Main Methods:

  • X-ray crystallography to determine three-dimensional structures of annexins.

Related Experiment Videos

  • Mutagenesis studies to probe protein function.
  • Biophysical investigations to assess protein activity.

    • Main Results:

    • Multiple three-dimensional structures of annexin crystals and membrane-bound annexins have been solved.
    • Structural data provide a foundation for functional studies.
    • Investigations are underway to explore annexin functions.

    Conclusions:

    • Structural insights into annexins are crucial for deciphering their biological roles.
    • Further research combining structural, mutagenesis, and biophysical approaches is needed.
    • Annexins may play roles in membrane interactions and ion transport.