THE FIXATION OF CARBON DIOXIDE IN 6-PHOSPHOGLUCONIC ACID
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چکیده
منابع مشابه
Carbon dioxide fixation in the brain.
Upon intracarotid administration of ammonia to cats, there is a significant increase of cerebral glutamine without a corresponding decrease in the level of cerebral glutamic acid (3). Similar observations in dogs have been reported by others (4). Since the supply of glutamic acid from the circulating blood is insufficient for the formation of the additional amount of glutamine, the dicarboxylic...
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With a purified enzyme preparation from yeast (I, 2), 6-phosphogluconate undergoes oxidative decarboxylation to form the ketopentose, ribulose-5-phosphate, which is converted by pentose phosphate isomerase in the enzyme preparation to an equilibrium mixture of ribulose-5-phosphate and ribose-5-phosphate. While extracts of several mammalian tissues have been observed to catalyze the reduction of...
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Carbon dioxide fixation has not been studied extensively in the invertebrate animal groups. In an early study Van Niel et al. (1) with Cl1 showed fixation of COZ into succinic acid in the protozoan Tetrahymena geleii. Hultin and Wessel (2) studied incorporation of C% into proteins of developing sea urchin eggs (Psammechinus miliaris) with attention on metabolic patterns of development rather th...
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sence of exogenously added glutamate and pyridoxal-5'-phosphate and produced radioactive aspartate in the presence of these components. Reduced nicotinamide adenine dinucleotide or reduced nicotinamide adenine dinucleotide phosphate could not be substituted for adenosine triphosphate (ATP); phosphoenolpyruvate even in the presence of nucleoside diphosphates could not replace pyruvate plus ATP; ...
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The ornithine + citrulline -+ arginine cycle of urea synthesis originally proposed by Krebs and Henseleit (1) has had increasing experimental support (2-10). The position of citrulline in the cycle, however, has been questioned (11). With the advent of the successful separation of the two over-all enzymatic steps, ornithine -+ citrulline and citrulline -+ arginine (lo), from the intact cellular...
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ژورنال
عنوان ژورنال: Journal of Biological Chemistry
سال: 1952
ISSN: 0021-9258
DOI: 10.1016/s0021-9258(18)55713-6