Results 321 to 330 of about 507,959 (341)
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Acetylation of methionine sulfoxide and methionine sulfone by the rat
Biochimica et Biophysica Acta (BBA) - General Subjects, 1972Abstract About 12% of the radioactivity of [Me-14C]methionine sulfoxide injected into rats was excreted in the urine in 24 h. N-Aceytlmethionine sulfoxide contained about 65% of the radioactivity excreted. The N-acetylcholamine sulfoxide was identified by its co-chromatography on paper with the chemically synthesized compound and its deacetylation to
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Interrelationship of adenosyl methionine and methyl-B12 in the biosynthesis of methionine
Archives of Biochemistry and Biophysics, 1966Abstract Methionine synthetase, an enzyme that catalyzes the terminal reaction in the biosynthesis of methionine (5-methyl tetrahydrofolate + homocysteine → tetrahydrofolate + methionine), has been partially purified from pig liver, beef liver, and Escherichia coli .
J.D. Brodie +4 more
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Drosophila Methionine sulfoxide reductase A is not a methionine oxidase
Free Radical Biology and Medicine, 2017Methionine sulfoxide reductase A (MsrA) stereospecifically catalyzes the reduction of S-methionine sulfoxide to methionine and is important in defense against oxidative stress. Recently, we reported that mammalian methionine sulfoxide reductase A stereospecifically and selectively oxidizes Met77 in calcium-bound calmodulin and can fully reduce it as ...
Nasser M. Rusan +3 more
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A kinetic study of the bisulphite reduction of methionine sulphoxide to methionine
Journal of the Science of Food and Agriculture, 1976AbstractThe rates of reduction of methionine sulphoxide to methionine by aqueous bisulphite solutions were measured by n.m.r. spectroscopy. The reaction was shown to follow overall second‐order kinetics, being first‐order with respect to methionine sulphoxide and first‐order with respect to bisulphite anion.
John T. Snow +2 more
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Analytical Biochemistry, 1976
Abstract The metabolic pathways of methionine sulphoxide and methionine sulphone were investigated employing a combination of gas chromatography, thin-layer chromatography, paper chromatography, and radioactive methods of analyses. Gas chromatographic analysis demonstrated that methionine, methionine sulphoxide, and methionine sulphone all yielded ...
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Abstract The metabolic pathways of methionine sulphoxide and methionine sulphone were investigated employing a combination of gas chromatography, thin-layer chromatography, paper chromatography, and radioactive methods of analyses. Gas chromatographic analysis demonstrated that methionine, methionine sulphoxide, and methionine sulphone all yielded ...
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Methionine metabolism in BHK cells: The regulation of methionine adenosyltransferase
Journal of Cellular Physiology, 1977AbstractThe regulation of methionine adenosyltransferase (MAT), an enzyme involved in SAM Abbreviations: DEAE cellulose, diethylaminoethyl cellulose; Hydroxo‐B1,2, (5.6‐dimethylbenzimidazolyl) hydroxo‐cobamide; MAMP, methioninol AMP; MAT, ATP: L‐methionine S‐adenosyltransferase; MTS, methionly tRNA synthetase; SAM, S‐adenosyl L‐methionine; tRNAmet, L ...
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