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Formate dehydrogenase--a versatile enzyme in changing environments.

Mika Jormakka1, Bernadette Byrne, So Iwata

  • 1Division of Biomedical Sciences Imperial College London, London SW7 2AZ, UK. mika.jormakka@imperial.ac.uk

Current Opinion in Structural Biology
|September 2, 2003
PubMed
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Recent structural studies reveal new insights into bis-molybdopterin guanine dinucleotide enzymes, including formate dehydrogenases with selenocysteine. These findings advance our understanding of enzyme structure and mechanism.

Area of Science:

  • Biochemistry
  • Structural Biology
  • Enzymology

Background:

  • The bis-molybdopterin guanine dinucleotide (MGD) enzyme family plays crucial roles in various metabolic pathways.
  • Understanding the structural basis of MGD enzyme function is essential for biochemical research.

Purpose of the Study:

  • To present recent structural findings for MGD enzymes, focusing on formate dehydrogenases.
  • To provide detailed structural and mechanistic information on this enzyme family.

Main Methods:

  • X-ray crystallography was used to determine the structures of MGD enzymes.
  • Biochemical assays were employed to investigate enzyme mechanisms.

Main Results:

  • Structures of three formate dehydrogenases, including two soluble and one membrane-bound enzyme, have been elucidated.

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  • These enzymes contain intrinsic selenocysteine residues, crucial for their catalytic activity.
  • The determined structures offer detailed insights into the catalytic mechanisms of MGD enzymes.

    • Conclusions:

    • Recent structural studies have significantly advanced the understanding of the bis-molybdopterin guanine dinucleotide enzyme family.
    • The structural data provides a foundation for future mechanistic investigations and enzyme engineering efforts.