The Enzymatic Oxidation of Cysteamine to Hypotaurine
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چکیده
منابع مشابه
The enzymatic oxidation of cysteamine to hypotaurine. Purification and properties of the enzyme.
The enzyme oxidizing cysteamine to hypotaurine has been extracted from horse kidney and purified. The final product behaves as a single protein when analyzed in the ultracentrifuge, by starch gel electrophoresis, and by filtration on dextran gels. The sedimentation coefficient of the pure product is s2o, = 5.9. The molecular weight determined by the Yphantis procedure (22) is 83,000. Nonheme ir...
متن کاملThe role of sulphur, sulphide and reducible dyes in the enzymic oxidation of cysteamine to hypotaurine.
1. Cysteamine is oxidized to hypotaurine by an enzyme extracted from horse kidney, with sulphur or sulphide acting as a cofactor. It has been now found that, when the enzyme is omitted, sulphur and sulphide are able to catalyse the oxidation of cysteamine to cystamine by molecular oxygen. 2. Methylene blue may be used in catalytic amounts as a cofactor in the enzymic oxidation of cysteamine to ...
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15 صفحه اولOxidation of hypotaurine and cysteine sulphinic acid by peroxynitrite.
Peroxynitrite mediates the oxidation of the sulphinic group of both HTAU (hypotaurine) and CSA (cysteine sulphinic acid), producing the respective sulphonates, TAU (taurine) and CA (cysteic acid). The reaction is associated with extensive oxygen uptake, suggesting that HTAU and CSA are oxidized by the one-electron transfer mechanism to sulphonyl radicals, which may initiate an oxygen-dependent ...
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ژورنال
عنوان ژورنال: Journal of Biological Chemistry
سال: 1966
ISSN: 0021-9258
DOI: 10.1016/s0021-9258(18)96514-2