Biosynthesis of urea. XIV. The quaternary structure of argininosuccinase.
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Role of dexamethasone and insulin on the development of the five urea-cycle enzymes in cultured rat foetal hepatocytes.
The activity changes of the urea-cycle enzymes were monitored in cultured foetal hepatocytes after dexamethasone and insulin treatments. Addition of dexamethasone induced the development of carbamoyl-phosphate synthetase, argininosuccinate synthetase, argininosuccinase and arginase activities as soon as day 16.5 of gestation. When insulin was added together with dexamethasone, it markedly inhib...
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It has been previously demonstrated that the hepatic level of each enzyme concerned with the biosynthesis of urea in the rat, i.e. carbamyl phosphate synthetase, ornithine transcarbamylase, argininosuccinate synthetase, argininosuccinase, and arginase (see Ratner (1) and Cohen and Brown (2) for discussions of the enzymatic steps of urea biosynthesis and general problems of urea synthesis), bear...
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1. The activities of enzymes of the urea cycle [carbamoyl phosphate synthetase, ornithine transcarbamoylase, argininosuccinate synthetase, argininosuccinase (these last two comprising the arginine-synthetase system) and arginase] have been measured in control, alloxan-diabetic and glucagon-treated rats. In addition, measurements were made on alloxan-diabetic rats treated with protamine-zinc-ins...
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Aims: Sodium nitrite is a food preservative that can endanger human health. This study aimed to investigate the perinatal and neonatal effects of sodium nitrite on the functional and tissue structure of rats’ offspring kidneys. Methods & Materials: In this experimental study, 56 female rats were divided into seven groups (n=8): control, perinatal and neonatal control groups, experimental group...
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عنوان ژورنال:
- The Journal of biological chemistry
دوره 247 21 شماره
صفحات -
تاریخ انتشار 1972