Carbamoyl Phosphate Synthetase, Ornithine Transcarbamylase, and Aspartate Transcarbamylase Activities in the Pea Ovary
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چکیده
منابع مشابه
Carbamyl phosphate-aspartate transcarbamylase activity in tumors.
The enzyme carbamyl phosphate-aspartate transcarbamylase catalyzes the transfer of the carbamyl group from carbamyl phosphate (CP) to L-aspartate ($). Preliminary experiments with a series of six relatively advanced azo dye-induced hepatomas indicated that hepatoma tissue had a higher CP-aspartate transcarbamylase activity than did liver from normal animals. Experiments are reported here in whi...
متن کاملStudy of carbamyl phosphate-ornithine transcarbamylase.
The enzyme carbamyl phosphate-ornithine transcarbamylase, which catalyzes the synthesis of citrulline from ornithine plus carbamyl phosphate, has been partially purified from rat liver by means of heat treatment and ethanol fractionation (1). Krebs et al. (2) were able to demonstrate the arsenolysis of citrulline in a number of tissues and, by using sheep liver mitochondria, were able to purify...
متن کاملPurification and Characterization of Ornithine Transcarbamylase from Pea (Pisum sativum
Pea (Pisum sativum) omithine transcarbamylase (OTC) was purified to homogeneity from leaf homogenates in a single-step procedure, using 5-N-(phosphonacetyl)-L-omithine-Sepharose 6B affinity chromatography. The 1581-fold purified OTC enzyme exhibited a specific activity of 139 micromoles citrulline per minute per milligram of protein at 370C, pH 8.5. Pea OTC represents approximately 0.05% of the...
متن کاملOrnithine Transcarbamylase Deficiency
Accumulation of ammonia in body tissues most commonly occurs in hepatic failure. However, it may also result from a specific deficiency of an enzyme of the urea cycle (Fig., 1). Severe hyperammonaemia has been reported with deficiencies of carbamyl phosphate synthetase (Freeman et al., 1964) and ornithine transcarbamylase (Russell et al., 1962; Levin and Russell, 1967). Some increase in blood a...
متن کاملAntepartum Ornithine Transcarbamylase Deficiency
Ornithine transcarbamylase deficiency (OTCD) is the most common type urea cycle enzyme deficiencies. This syndrome results from a deficiency of the mitochondrial enzyme ornithine transcarbamylase, which catalyzes the conversion of ornithine and carbamoyl phosphate to citrullin. Our case was a 28-year-old female diagnosed with OTCD following neurocognitive deficit during her first pregnancy. Alt...
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ژورنال
عنوان ژورنال: Plant Physiology
سال: 1989
ISSN: 0032-0889,1532-2548
DOI: 10.1104/pp.90.4.1565