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Sulphide oxidation linked to the reduction of nitrate and nitrite in Thiobacillus denitrificans

1. Whole cells of Thiobacillus denitrificans reduce nitrite to NO, N2O and N2 when sulphide is the electron donor. 2. Crude extracts catalyse the oxidation of sulphide, which may be coupled to either oxygen, nitrate or nitrite as terminal acceptors. 3. The initial product of sulphide oxidation...

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Main Authors: Aminuddin, M., Nicholas, D. J. D.
Format: Article
Language:English
Published: Elsevier 1973
Online Access:http://psasir.upm.edu.my/id/eprint/33947/1/23.%2033947%20sulphide%20oxidation%20linked.pdf
http://psasir.upm.edu.my/id/eprint/33947/
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spelling my.upm.eprints.339472015-04-21T07:54:39Z http://psasir.upm.edu.my/id/eprint/33947/ Sulphide oxidation linked to the reduction of nitrate and nitrite in Thiobacillus denitrificans Aminuddin, M. Nicholas, D. J. D. 1. Whole cells of Thiobacillus denitrificans reduce nitrite to NO, N2O and N2 when sulphide is the electron donor. 2. Crude extracts catalyse the oxidation of sulphide, which may be coupled to either oxygen, nitrate or nitrite as terminal acceptors. 3. The initial product of sulphide oxidation is a membrane-bound polymeric sulphur compound which is probably a polysulphide. This step is inhibited by CO. 4. In the absence of either nitrate or nitrite, sulphide is oxidized to polysulphide and sulphite. When nitrate is present, sulphide is oxidized to sulphate with a concomitant reduction of nitrate to nitrite. Under anaerobic conditions and in the presence of nitrite, sulphide is oxidized to polysulphide only. 5. Sulphite is oxidized to either adenosine 5′-phosphosulphate in the soluble fraction (S144) or to sulphate by the membrane fraction (P144). 6. A scheme for the oxidation of sulphide is proposed. Elsevier 1973 Article PeerReviewed application/pdf en http://psasir.upm.edu.my/id/eprint/33947/1/23.%2033947%20sulphide%20oxidation%20linked.pdf Aminuddin, M. and Nicholas, D. J. D. (1973) Sulphide oxidation linked to the reduction of nitrate and nitrite in Thiobacillus denitrificans. Biochimica et Biophysica Acta (BBA) - Bioenergetics, 325 (1). pp. 81-93. ISSN 0006-3002 10.1016/0005-2728(73)90153-9
institution Universiti Putra Malaysia
building UPM Library
collection Institutional Repository
continent Asia
country Malaysia
content_provider Universiti Putra Malaysia
content_source UPM Institutional Repository
url_provider http://psasir.upm.edu.my/
language English
description 1. Whole cells of Thiobacillus denitrificans reduce nitrite to NO, N2O and N2 when sulphide is the electron donor. 2. Crude extracts catalyse the oxidation of sulphide, which may be coupled to either oxygen, nitrate or nitrite as terminal acceptors. 3. The initial product of sulphide oxidation is a membrane-bound polymeric sulphur compound which is probably a polysulphide. This step is inhibited by CO. 4. In the absence of either nitrate or nitrite, sulphide is oxidized to polysulphide and sulphite. When nitrate is present, sulphide is oxidized to sulphate with a concomitant reduction of nitrate to nitrite. Under anaerobic conditions and in the presence of nitrite, sulphide is oxidized to polysulphide only. 5. Sulphite is oxidized to either adenosine 5′-phosphosulphate in the soluble fraction (S144) or to sulphate by the membrane fraction (P144). 6. A scheme for the oxidation of sulphide is proposed.
format Article
author Aminuddin, M.
Nicholas, D. J. D.
spellingShingle Aminuddin, M.
Nicholas, D. J. D.
Sulphide oxidation linked to the reduction of nitrate and nitrite in Thiobacillus denitrificans
author_facet Aminuddin, M.
Nicholas, D. J. D.
author_sort Aminuddin, M.
title Sulphide oxidation linked to the reduction of nitrate and nitrite in Thiobacillus denitrificans
title_short Sulphide oxidation linked to the reduction of nitrate and nitrite in Thiobacillus denitrificans
title_full Sulphide oxidation linked to the reduction of nitrate and nitrite in Thiobacillus denitrificans
title_fullStr Sulphide oxidation linked to the reduction of nitrate and nitrite in Thiobacillus denitrificans
title_full_unstemmed Sulphide oxidation linked to the reduction of nitrate and nitrite in Thiobacillus denitrificans
title_sort sulphide oxidation linked to the reduction of nitrate and nitrite in thiobacillus denitrificans
publisher Elsevier
publishDate 1973
url http://psasir.upm.edu.my/id/eprint/33947/1/23.%2033947%20sulphide%20oxidation%20linked.pdf
http://psasir.upm.edu.my/id/eprint/33947/
_version_ 1643831013593317376
score 13.211869

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