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Related Experiment Videos

Another look at collagen V and XI molecules

A Fichard1, J P Kleman, F Ruggiero

  • 1Institut de Biologie et Chimie des Protéines, Lyon, France.

Matrix Biology : Journal of the International Society for Matrix Biology
|July 1, 1995
PubMed
Summary

Collagens V and XI, minor extracellular matrix components, are crucial for fibrillogenesis. Evidence suggests they form a single collagen V/XI type, influencing cell adhesion and healing.

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Area of Science:

  • Biochemistry
  • Molecular Biology
  • Extracellular Matrix Research

Background:

  • Fibrillar collagens are abundant extracellular matrix proteins.
  • Collagens V and XI are minor components regulating fibril formation, potentially forming a core within fibrils.
  • Unusually, these collagens retain N-propeptide extensions in tissue forms.

Purpose of the Study:

  • To investigate the structural and biological properties of collagens V and XI.
  • To explore their role in fibrillogenesis and tissue organization.
  • To determine if collagens V and XI represent distinct types or a single collagen V/XI type.

Main Methods:

  • Comparative analysis of primary structures at gene and protein levels.
  • Assessment of resistance to mammalian collagenases and sensitivity to trypsin.
  • Investigation of cell adhesion and heparin binding properties.

Main Results:

  • Collagens V and XI exhibit highly conserved primary structures and similar biological properties.
  • Both collagen types are resistant to mammalian collagenases but sensitive to trypsin.
  • Evidence indicates heterotypic associations, suggesting a single collagen V/XI type.

Conclusions:

  • Collagens V and XI are closely related, sharing conserved features and biological functions.
  • Their unique properties, including N-propeptide retention and enzyme sensitivity, are significant.
  • The findings strongly support classifying collagens V and XI as a single collagen V/XI type, crucial for extracellular matrix integrity and physiological processes.

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