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Hydrogen sulfide: clandestine microbial messenger?

Lloyd, David 2006. Hydrogen sulfide: clandestine microbial messenger? Trends in Microbiology 14 (10) , pp. 456-462. 10.1016/j.tim.2006.08.003

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Although the toxicity of hydrogen sulfide (H2S) has been substantiated for almost 230 years, its pivotal roles in both aerobic and anaerobic organisms have only recently become evident. In low oxygen environments with millimolar concentrations of H2S, it functions as an electron donor and as an energy source in some systems. At micromolar levels, intracellular H2S in aerobic organisms has a vital role in redox balancing. At even lower concentrations, H2S provides essential signals in yeast, in the brain and in smooth and cardiac muscles. Here, other possible coordinating roles within and between microorganisms are suggested, including the possibility that H2S functions as a signalling mediator in prokaryotes. It is expected that future research will uncover a host of novel functions, not only in eukaryotes but also in prokaryotic species.

Item Type: Article
Date Type: Publication
Status: Published
Schools: Biosciences
Publisher: Elsevier
ISSN: 0966-842X
Last Modified: 04 Jun 2017 06:36

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