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Bovine lens multicatalytic proteinase complex

B J Wagner1, J W Margolis, I Singh

  • 1Department of Biochemistry and Molecular Biology, University of Medicine and Dentistry, New Jersey Medical School, Newark 07103.

Enzyme & Protein
|January 1, 1993
PubMed
Summary
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The ocular lens maintains transparency through stringent control of proteolysis, essential for growth and protein integrity. This review examines lens proteinases and the bovine lens multicatalytic proteinase complex.

Area of Science:

  • Ocular biology
  • Proteolysis research
  • Biochemistry

Background:

  • The ocular lens grows throughout life, requiring precise protein turnover for transparency and function.
  • Lens transparency depends on protein integrity, yet proteolysis is necessary for development.
  • Strict regulation of proteolytic enzymes is crucial in the avascular lens environment.

Purpose of the Study:

  • To review the structural characteristics of lens proteolytic enzymes.
  • To discuss the properties of the bovine lens multicatalytic proteinase complex.
  • To explore factors influencing proteinase activity, such as cations and temperature.

Main Methods:

  • Review of existing literature on lens structure and proteinases.
  • Analysis of electrophoretic patterns (SDS-PAGE) of the bovine lens proteinase complex.

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  • Examination of experimental data on enzyme activation and inhibition.

    • Main Results:

    • Detailed description of major lens proteolytic enzymes and their roles.
    • Characterization of the bovine lens multicatalytic proteinase complex's structure and function.
    • Identification of specific activators (cations, amphiphilic molecules) and inhibitors (temperature) of lens proteinases.

    Conclusions:

    • Stringent control over proteolysis is vital for maintaining lens transparency and function.
    • The bovine lens multicatalytic proteinase complex exhibits complex regulatory mechanisms.
    • Understanding these mechanisms is key to addressing lens aging and diseases.