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Bacterial intracellular sulfur globules: structure and function.

James S Maki1

  • 1Department of Biological Sciences, Marquette University, Milwaukee, Wisc., USA. james.maki@marquette.edu

Journal of Molecular Microbiology and Biotechnology
|August 8, 2013
PubMed
Summary
This summary is machine-generated.

Bacteria store sulfur in intracellular globules, crucial for energy. Studying genes like sox and dsr in Proteobacteria helps understand sulfur metabolism and globule formation.

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Area of Science:

  • Microbiology
  • Biochemistry
  • Genetics

Background:

  • Bacteria oxidizing sulfur compounds store elemental sulfur in intracellular globules.
  • These bacteria, mainly Proteobacteria, are chemotrophic or photoautotrophic.
  • Allochromatium vinosum is the model organism for studying these globules.

Purpose of the Study:

  • To understand the formation and breakdown of intracellular sulfur globules.
  • To identify genetic and physiological factors influencing sulfur globule formation.
  • To explore commonalities and differences in sulfur globule formation across bacterial species.

Main Methods:

  • Genomics
  • Transcriptomics
  • Proteomics
  • Analysis of genes like sulfur oxidizing (sox) and dissimilatory sulfite reductase (dsr).

Main Results:

  • Research on Allochromatium vinosum has elucidated protein membranes and sulfur content of globules.
  • Key genes (sox, dsr) are important for globule formation and sulfur oxidation.
  • Intracellular sulfur globules are transient storage forms of sulfur.

Conclusions:

  • Further multi-omics research on diverse bacteria will provide a comprehensive understanding of sulfur globule dynamics.
  • Common genetic and physiological traits are expected, alongside novel discoveries.
  • Understanding these processes is vital for microbial sulfur cycling.