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Related Experiment Videos

Hydrogen sulfide: clandestine microbial messenger?

David Lloyd1

  • 1Microbiology, Cardiff School of Biosciences, Cardiff University, Main Building, P.O. Box 915, Cardiff CF10 3TL, UK. lloydd@cardiff.ac.uk

Trends in Microbiology
|August 16, 2006
PubMed
Summary
This summary is machine-generated.

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Hydrogen sulfide (H(2)S), known for toxicity, is now recognized for crucial roles in energy production and signaling in organisms. Future research will likely reveal more novel functions in both prokaryotes and eukaryotes.

Area of Science:

  • Biochemistry
  • Microbiology
  • Physiology

Background:

  • Hydrogen sulfide (H(2)S) has been recognized for its toxicity for over two centuries.
  • Recent research highlights H(2)S's significant roles in both aerobic and anaerobic organisms.
  • These roles span from energy metabolism to cellular signaling.

Purpose of the Study:

  • To review the multifaceted roles of hydrogen sulfide (H(2)S) in biological systems.
  • To explore H(2)S's function as an electron donor and energy source in anaerobic environments.
  • To discuss H(2)S's signaling functions in various organisms, including potential roles in prokaryotes.

Main Methods:

  • Literature review and synthesis of existing research on hydrogen sulfide.
  • Analysis of H(2)S concentrations and their effects in different biological contexts (e.g., low oxygen, intracellular).

Related Experiment Videos

  • Exploration of H(2)S's involvement in redox balancing and intercellular communication.

    • Main Results:

    • H(2)S acts as an electron donor and energy source in millimolar concentrations in low oxygen environments.
    • Intracellular H(2)S at micromolar levels is critical for redox balancing in aerobic organisms.
    • H(2)S at lower concentrations serves as an essential signaling molecule in yeast, brain, and muscles.

    Conclusions:

    • Hydrogen sulfide exhibits diverse and vital functions beyond its known toxicity.
    • H(2)S plays key roles in energy metabolism and redox homeostasis across different organisms.
    • Emerging evidence suggests H(2)S may act as a signaling mediator in prokaryotes, with further novel functions anticipated in future research.