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Related Experiment Videos

Underground metabolism

R D'Ari1, J Casadesús

  • 1Institut Jacques Monod, CNRS, Université Paris 7, France. dari@im.jussieu.fr

Bioessays : News and Reviews in Molecular, Cellular and Developmental Biology
|June 19, 1998
PubMed
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Enzymes can utilize alternative substrates, leading to "underground metabolism" that can cause observable phenotypes. This metabolic inaccuracy may offer evolutionary advantages like plasticity, but complicates genetic disorder interpretation.

Area of Science:

  • Biochemistry
  • Metabolic pathways
  • Enzymology

Background:

  • Enzymes possess the capability to interact with substrates beyond their primary targets.
  • Naturally occurring metabolites can act as alternative substrates, initiating 'underground reactions'.

Purpose of the Study:

  • To explore the implications of enzyme alternative substrate utilization.
  • To investigate the phenotypic consequences of underground metabolism.
  • To propose a role for metabolic inaccuracy in evolutionary advantage.

Main Methods:

  • Analysis of existing literature and case studies.
  • Biochemical pathway modeling.
  • Phenotypic observation interpretation.

Main Results:

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  • Underground metabolism, driven by alternative substrates, can manifest observable phenotypes.
  • Biological systems exhibit error rates that are not perfectly accurate.
  • Metabolic inaccuracy may provide evolutionary benefits, including enhanced metabolic plasticity.

Conclusions:

  • Underground reactions are not predictable from DNA sequence data alone.
  • Caution is advised when correlating genetic disorders with pathological syndromes due to unpredictable metabolic pathways.