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Related Experiment Videos

Structure to function relationships in ceruloplasmin: a 'moonlighting' protein.

P Bielli1, L Calabrese

  • 1Institute of Microbiology and Genetics, Vienna Biocenter, University of Vienna, Austria. pamela@gem.univie.ac.at

Cellular and Molecular Life Sciences : CMLS
|November 21, 2002
PubMed
Summary

Ceruloplasmin, an ancient multicopper oxidase, safely handles oxygen and exhibits multiple functions beyond its primary role. This

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Area of Science:

  • Biochemistry and Molecular Biology
  • Protein Structure and Function
  • Evolutionary Biology

Background:

  • Specialized copper sites in proteins facilitate long-range electron transfer and oxygen binding/activation.
  • Ceruloplasmin is an ancient multicopper oxidase in vertebrates, crucial for managing oxygen reactivity in metabolic pathways.
  • Existing structural data reveals ceruloplasmin's plasticity and multiple binding sites, suggesting complex functions.

Purpose of the Study:

  • To explore the multifunctional nature of ceruloplasmin.
  • To understand how ceruloplasmin's structure supports its diverse activities.
  • To highlight ceruloplasmin as an example of a 'moonlighting' protein.

Main Methods:

  • Analysis of available structural data of ceruloplasmin.

Related Experiment Videos

  • Review of literature on ceruloplasmin's known functions and evolutionary history.
  • Comparative analysis of copper-containing proteins involved in oxygen metabolism.

    • Main Results:

    • Ceruloplasmin possesses a multitude of binding sites, indicating a complex functional mechanism.
    • Its structure supports diverse activities, adapting to various physiological and pathological conditions.
    • Ceruloplasmin exemplifies a 'moonlighting' protein, defying the one gene-one function paradigm.

    Conclusions:

    • Ceruloplasmin's intricate structure enables versatile functions beyond its primary role in oxygen metabolism.
    • The protein's adaptability highlights evolutionary strategies for protein functional diversification.
    • Ceruloplasmin serves as a key model for understanding 'moonlighting' proteins in biological systems.