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Copper-tyrosyl radical enzymes.

Melanie S Rogers1, David M Dooley

  • 1Department of Chemistry and Biochemistry, Gaines Hall, Montana State University, Bozeman, MT 59717, USA. mrogers@copper.chemistry.montana.edu

Current Opinion in Chemical Biology
|April 26, 2003
PubMed
Summary

Recent advances enhance understanding of copper-containing tyrosyl radical enzymes, including galactose oxidase biogenesis and cytochrome c oxidase radical mechanisms. Studies explore enzyme structure, precursor forms, and radical roles during turnover.

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Inorganic chemistry·2020

Area of Science:

  • Biochemistry
  • Enzymology
  • Structural Biology

Background:

  • Significant progress since 2000 has deepened the understanding of copper-containing tyrosyl radical enzymes.
  • These enzymes play crucial roles in various biological processes.

Purpose of the Study:

  • To detail the biogenesis and structure of galactose oxidase.
  • To define the role of the tyrosyl radical in cytochrome c oxidase.
  • To investigate the His-Tyr crosslink and radical location in cytochrome c oxidase.

Main Methods:

  • Structural analysis of precursor galactose oxidase.
  • Mechanistic studies on copper-containing tyrosyl radical enzymes.
  • Investigating radical evidence during enzyme turnover.

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Main Results:

  • The structure of the galactose oxidase precursor enzyme has been determined.
  • A framework for mechanistic studies of galactose oxidase is emerging.
  • The role of the tyrosyl radical in cytochrome c oxidase is being elucidated.

Conclusions:

  • Advances in understanding enzyme biogenesis, structure, and mechanism are ongoing.
  • Further research is defining the specific roles of tyrosyl radicals in enzyme function.
  • Investigating enzyme intermediates and radical presence during turnover is key.