Lusty, James R., Hughes, Martin N. and Kelly, Donovan P.. (2006) Inhibitory effects of sulfamic acid on three thiosulfate-oxidizing chemolithotrophs. FEMS MICROBIOLOGY LETTERS, 264 (1). pp. 70-73. ISSN 0378-1097

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Abstract

Sulfamate is an analogue of thiosulfate, and the sodium and potassium salts of sulfamic acid inhibited the chemolithoautotrophic growth on thiosulfate of Acidithiobacillus ferrooxidans and Halothiobacillus neapolitanus. The chemo-organotrophic growth of Paracoccus versutus on sucrose was similarly inhibited by sulfamate. Thiosulfate oxidation by suspensions of H. neapolitanus was, however, unaffected by sulfamate, showing that sulfamate did not directly affect thiosulfate uptake, activation or oxidation. Inhibition of P. versutus was not relieved by cysteine and methionine, indicating that sulfate uptake and sulfur amino acid biosynthesis were not directly affected by sulfamate. Sulfamate was not degraded by any of the bacteria, and so could not serve as an alternative to thiosulfate as an energy-yielding substrate. Sulfamate is also an analogue of ammonia and might act like hydrazine by inhibiting ammonium uptake or an essential enzyme activity.

Item Type:	Journal Article
Subjects:	Q Science > QR Microbiology
Journal or Publication Title:	FEMS MICROBIOLOGY LETTERS
Publisher:	BLACKWELL PUBLISHING
ISSN:	0378-1097
Date:	November 2006
Volume:	264
Number:	1
Number of Pages:	4
Page Range:	pp. 70-73
Identification Number:	10.1111/j.1574-6968.2006.00437.x
Publication Status:	Published
URI:	http://wrap.warwick.ac.uk/id/eprint/33000

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