An Aspect of Urea Cycle Enzymes in Goat
نویسندگان
چکیده
منابع مشابه
Adaptive characteristics of urea cycle enzymes in the rat.
The response of the mammal to varying dietary protein intake under conditions in which amino acid and energy requirements are adequately satisfied is a form of adaptation involving the utilization of varying proportions of carbohydrate and amino acids as sources of energy, and is therefore analogous to the adaptation seen in bacteria on change in form of energy source (1). The amino nitrogen re...
متن کاملComparative biochemistry of urea synthesis. II. Levels of urea cycle enzymes in metamorphosing Rana catesbeiana tadpoles.
Among the various physiological-biochemical changes associated with the invasion of land from an aquatic environment is that dealing with the nature of the nitrogen excretion product of protein and amino acid catabolism. In general terms (l-4), the excretion of ammonia (ammonotelism), urea (ureotelism), or uric acid (uricotelism) is related to the availability of water to an organism. Ammonia c...
متن کاملOrnithine-Urea Cycle Enzymes in the African Lungfish, Protopterus aethiopicus.
The presence of all five enzymes of the ornithine-urea cycle has been demonstrated in the liver of the African lungfish Protopterus aethiopicus. Levels of activity of the rate-limiting enzymes, carbamoyl phosphate synthetase and argininosuccinate synthetase, are similar to those in the premetamorphic tadpole of Rana catesbeiana and considerably lower than the levels reported for other ureotelic...
متن کاملInduction of urea cycle enzymes of rat liver by glucagon.
All five urea cycle enzymes of rat liver increased in activity 48 h after subcutaneous administration of crystalline zinc glucagon to male rats and remained elevated after 7 days of continuous glucagon infusion. The maximum ratios of enzyme activities over those of controls were 2.0 for carbamyl phosphate synthetase, 1.3 for ornithine transcarbamylase, 2.7 for argininosuccinate synthetase, 3.2 ...
متن کاملComparative biochemistry of urea synthesis. I. Methods for the quantitative assay of urea cycle enzymes in liver.
Elucidation of the various enzymatic reactions of the KrebsHenseleit ornithine-urea cycle (1) stems from several laboratories (l-13), whose primary aims were the isolation, purification, and study of the requirements and mechanism of action of the several enzymes. The present study was undertaken to provide a systematic scheme of analysis for the quantitative determination of the levels of thes...
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ژورنال
عنوان ژورنال: Agricultural and Biological Chemistry
سال: 1970
ISSN: 0002-1369,1881-1280
DOI: 10.1271/bbb1961.34.1603