Rhodanese: an enzyme not necessary for thiosulphate oxidation by Thiobacillus A2
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چکیده
منابع مشابه
Thiosulphate Oxidation in Thiobacillus
bacterium Thiobacillus X. A fifth fraction (acidic fraction) contained two additional cytochrome components with x bands at 550 and 557 msi respectively in the reduced state. 2. All the cytochromes appear to be ofthe c type, are labile to heat and acid and do not combine with carbon monoxide. They are auto-oxidizable to varying degrees. 3. Cytochromes 550 (1) and 557 (1) are basic, and are adso...
متن کاملThiosulphate Oxidation by Thiobacillus Strain C
1. Thiobacillus strain C oxidized [35S]thiosulphate completely to sulphate. 2. During thiosulphate oxidation [35S]sulphate was formed more rapidly from (S. 35SO3)2than from (35S *SO3)2-. 35S disappeared less rapidly from thiosulphate with (35S SO3)2as substrate than with (S.35SO3)2-. 3. Thiosulphate labelled in both atoms was produced during (35S * SO3)2oxidation, but not during (S. 35SO3)2oxid...
متن کاملImproved Assay for Rhodanese in Thiobacillus spp.
Rhodanese (thiosulfate:cyanide sulfurtransferase; EC 2.8.1.1) catalyzes the conversion of thiosulfate and cyanide to thiocyanate and sulfite. Conventional rhodanese assays colorimetrically measure the formation of one or the other of the products. These assays suffer from the fact that there is significant nonbiological formation of these products in addition to the enzymatically catalyzed reac...
متن کاملThe effects of thiosulphate and oxygen concentration on tetrathionate oxidation by Thiobacillus X and T. thioparus.
in the 2-week-old rats, ascorbic acid either performs additional functions or performs the same functions as in the other two groups but at accelerated rates. Since the bone marrow is predominantly engaged in the production of blood cells, it is possible that some relationship may exist between the rate of production of blood cells and the quantity of ascorbic acid available to the bone marrow....
متن کاملDeficiency of thiosulphate sulphurtransferase (rhodanese) in Leber's hereditary optic neuropathy.
Leber's hereditary optic neuropathy is a rare cause of progressive visual failure. Its cause is unknown, but one hypothesis is that patients have a defect in the detoxication of cyanide. One of the enzymes used in this detoxication is thiosulphate sulphurtransferase (rhodanese). The activity of this enzyme was measured in the rectal mucosa of a group of subjects with Leber's hereditary optic ne...
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ژورنال
عنوان ژورنال: FEMS Microbiology Letters
سال: 1983
ISSN: 0378-1097
DOI: 10.1016/0378-1097(83)90343-9