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Related Experiment Videos

Transsulfuration in archaebacteria.

D Zhou1, R H White

  • 1Department of Biochemistry and Nutrition, Virginia Polytechnic Institute and State University, Blacksburg 24061.

Journal of Bacteriology
|May 1, 1991
PubMed
Summary
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Archaebacteria Sulfolobus acidocaldarius and Halobacterium marismortui can convert sulfur from methionine to cysteine. This sulfur transfer pathway, previously known in eukaryotes, is also present in these archaeal organisms.

Area of Science:

  • Microbiology
  • Biochemistry
  • Archaea Research

Background:

  • Methionine and cysteine are key sulfur-containing amino acids.
  • Sulfur metabolism pathways are crucial for cellular function.
  • Archaea possess unique biochemical adaptations.

Purpose of the Study:

  • To investigate sulfur transfer from methionine to cysteine in archaea.
  • To determine if archaea share this metabolic pathway with eukaryotes.

Main Methods:

  • Utilized 34S-labeled methionine as a tracer.
  • Cultured Sulfolobus acidocaldarius and Halobacterium marismortui.
  • Analyzed sulfur incorporation using mass spectrometry.

Main Results:

Related Experiment Videos

  • 34S incorporation into cysteine was detected.
  • Both studied archaeal species demonstrated sulfur transfer from methionine to cysteine.
  • This pathway is conserved across archaea and eukaryotes.

    • Conclusions:

    • Archaebacteria Sulfolobus acidocaldarius and Halobacterium marismortui possess the methionine-to-cysteine sulfur transfer pathway.
    • This finding highlights a conserved metabolic capability between archaea and eukaryotes.