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Studies on Biochemistry of the Thiobacilli

Masayo OKUZUMI, Yasou KITA

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Abstract

In the oxidation of thiosulfate at pH 4.5 tetrathionate was formed as an intermediate, and the thiosulfate-oxidizing enzyme was active in acidic pH range in contrast to the enzyme of T. thioparus and Thiobacillus X. Phosphate did not seem to affect the oxidation of thiosulfate but rather affect the conversion of tetrathionate. In the absence of phosphate, tetrathionate, which was produced from thiosulfate oxidation, seemed to accumulate without undergoing further conversion.

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In the oxidation of thiosulfate at pH 4.5 tetrathionate was formed as an intermediate, and the thiosulfate-oxidizing enzyme was active in acidic pH range in contrast to the enzyme of T. thioparus and Thiobacillus X. Phosphate did not seem to affect the oxidation of thiosulfate but rather affect the conversion of tetrathionate. In the absence of phosphate, tetrathionate, which was produced from thiosulfate oxidation, seemed to accumulate without undergoing further conversion.

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Available abstract

In the oxidation of thiosulfate at pH 4.5 tetrathionate was formed as an intermediate, and the thiosulfate-oxidizing enzyme was active in acidic pH range in contrast to the enzyme of T. thioparus and Thiobacillus X. Phosphate did not seem to affect the oxidation of thiosulfate but rather affect the conversion of tetrathionate. In the absence of phosphate, tetrathionate, which was produced from thiosulfate oxidation, seemed to accumulate without undergoing further conversion.

Key concepts: Tetrathionate, Thiosulfate, Chemistry, Thiobacillus, Oxidizing agent, Enzyme, Phosphate, Biochemistry

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