Oxidative detoxification of hydrogen sulphide detected by mass spectrometry in the soil amoeba Acanthamoeba castellanii

Lloyd, David ORCID: https://orcid.org/0000-0002-5656-0571, Kristensen, Bodil and Degn, Hans 1981. Oxidative detoxification of hydrogen sulphide detected by mass spectrometry in the soil amoeba Acanthamoeba castellanii. Microbiology 126 (1) , pp. 167-170. 10.1099/00221287-126-1-167

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Abstract

Respiration of the soil amoeba Acanthamoeba castellanii is stimulated by low concentrations of H2S (< 17 Pa in the gas phase); consumption of H2S accompanies respiratory stimulation. Inhibition of the main respiratory chain by 1 mm-NaN3 prevents H2S consumption. At higher concentrations, H2S inhibits respiration incompletely; the inhibition is enhanced by 1 mm-salicylhydroxamic acid. Thus this organism has two means of protection against the potentially toxic gas: the ability to oxidize H2S, and the presence of alternative pathways of electron transport which are not blocked by this respiratory inhibitor.

Item Type:	Article
Date Type:	Publication
Status:	Published
Schools:	Schools > Biosciences
Publisher:	Microbiology Society
ISSN:	1350-0872
Last Modified:	26 Oct 2022 08:34
URI:	https://orca.cardiff.ac.uk/id/eprint/127796

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