منابع مشابه
Org . On Cysteine and Cystine Peptides . Part V . l S - Trityl - and S - Diphenyl - methyl - cysteine and - cysteine Peptides
A new method for the preparation of S-trityl(i.e. triphenylmethyl) and S-diphenylmethyl-cysteines or -cysteine peptides involves treatment of cysteine or cysteine peptides with aralkylcarbinols in the presence of trifluoroacetic acid or hydrogen halides in acetic acid solution. The optimal conditions for the removal of these S-protecting aralkyl groups by trifluoroacetic acid or hydrogen halide...
متن کاملStudy the effect of s-methyl L-cysteine on lipid metabolism in an experimental model of diet induced obesity.
BACKGROUND S-methyl L-cysteine (SMC) is a hydrophilic cysteine-containing compound naturally found in Alium plants such as, garlic and onion. OBJECTIVES The present study was aimed to evaluate the hypoglycemic and antihyperlipidemic properties of SMC in high fructose induced diabetic rats. MATERIAL AND METHODS The present study was designed to evaluate the hypoglycemic and antihyperlipidemi...
متن کاملS-Alkylcysteinase: Enzymatic Cleavage of S-Methyl-L-cysteine and Its Sulfoxide*
S-Methylcysteine has been isolated from the nonprotein nitrogen fractions of cabbage, turnips, and several other crucifers, and the structure of the amino acid was established by chemical studies and by comparison with a synthetic material (14). Subsequently, this compound has been found in garlic and onion (5)) kidney bean seeds (6)) Neurospora crassa (7)) and the hemolymph of Prod&a ericlenia...
متن کاملDiurnal variation in the metabolism of S-carboxymethyl-L-cysteine in humans.
The routes of metabolism of S-carboxymethyl-L-cysteine in humans are dependent on the time of dosing. Administration of 750 mg of S-carboxymethyl-L-cysteine (Day 1) during the day at 8:00 AM followed by a 8:00 AM to 4:00 PM urine collection revealed that S-carboxymethyl-L-cysteine S-oxide was the major urinary metabolite produced. The 4:00 PM to midnight urine collection resulted in S-(carboxym...
متن کاملMethionine sulfoxide reductase A and a dietary supplement S-methyl-L-cysteine prevent Parkinson's-like symptoms.
Parkinson's disease (PD), a common neurodegenerative disease, is caused by loss of dopaminergic neurons in the substantia nigra. Although the underlying cause of the neuronal loss is unknown, oxidative stress is thought to play a major role in the pathogenesis of PD. The amino acid methionine is readily oxidized to methionine sulfoxide, and its reduction is catalyzed by a family of enzymes call...
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ژورنال
عنوان ژورنال: Biochemical Journal
سال: 1968
ISSN: 0306-3283
DOI: 10.1042/bj1070217