منابع مشابه
Enzymic determination of branched-chain amino acids.
Transamination of branched-chain amino acids to (alpha-oxoglutarate, catalyzed by leucine aminotransferase coupled to the glutamate dehydrogenase reaction, is used in an enzymic assay for determination of branched-chain amino acids in serum and tissue homogenates. The coefficients of variation of the method within-day and day-to-day are 2.4 and 6.5%, respectively. Analytical recovery of physiol...
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the Neuro8pora or bacterial mutants. In addition, it seems improbable on structural grounds that these benzenoid compounds would be intermediates in the synthesis of such hydroaromatic compounds as prephenic acid. It is not known at present whether vanillic acid is formed by methylation of the 3-hydroxyl group of dehydroshikimic acid followed by dehydration, or by direct methylation of protocat...
متن کاملNew enzymic method for serum oxalate determination.
There have been several recent methods for determining serum oxalate in man (1-8), but reported normal values have ranged from 0.3 to 14 mg/liter. Recently Knowles and Hodgkinson (6) reported an enzymic method for oxalate determination in human serum by use of oxalate decarboxylase (EC 4.1.1.2) with subsequent colorimetric determination of the evolved CO2. The method is specific, but the techni...
متن کاملRat liver L-threonine dehydrogenase.
L-threonine dehydrogenase (E.C.1.1.1.103) catalyzes the NAD+-dependent transformation of Lthreonine to 2-amino 3-0x0-butyric acid, which spontaneously loses CO2 with the final production of aminoacetone ( 1) The enzyme is present in several microorganisms as well as in the liver of vertebrates (2-6). We studied some properties of the rat liver enzyme, showing that the activity was strongly inhi...
متن کاملL-threonine in the treatment of spasticity.
Preclinical data indicate that the administration of the amino acid L-threonine increases glycine levels in rat spinal cord. In order to investigate glycinergic mechanisms in spasticity, and other signs of the upper motor syndrome, we gave 4.5 and 6.0 g/day of L-threonine to 18 patients with familial spastic paraparesis (FSP) according to a double-blind, crossover protocol. The response to trea...
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ژورنال
عنوان ژورنال: Journal of the agricultural chemical society of Japan
سال: 1955
ISSN: 0002-1407,1883-6844
DOI: 10.1271/nogeikagaku1924.29.704