Reversible inactivation of rat liver serine dehydratase by its substrates
نویسندگان
چکیده
منابع مشابه
The separation of rat liver serine dehydratase and cystathionine synthase.
A compound derived from pyruvic acid and homocysteine has been isolated from reaction mixtures containing serinel*C, homocysteine, and serine dehydratase preparations. The formation of this product interferes with commonly used assays of serine dehydratase, which are based on the serine, pyruvic acid, or homocysteine content of incubation mixtures. Improved assay procedures have permitted the i...
متن کاملThe reversible inactivation of L-threonine hydratase of sheep liver by L-serine.
The action of partially purified L-threonine dehydratase of sheep liver on L-serine has been studied. This enzyme acts on L-serlne as a substrate but is rapidly inactivated in the process, partially at pH 8.9 and more completely at pH 7.2. However, incubation at pH 8.9, with or without L-threonine, leads to a gradual restoration of up to 90% of the original activity. The addition of pyridoxal p...
متن کاملLocalization of Polysome-bound Albumin and Serine Dehydratase in Rat Liver Cell Fractions
The polysomes involved in albumin and serine dehydratase synthesis were identified and localized by the binding to rat liver polysomes of anti-rat serum albumin and anti-serine dehydratase [(125)I]Fab dimer and monomer. Techniques were developed for the isolation of undegraded free and membrane-bound polysomes and for the preparation of [(125)I]Fab monomers and dimers from the IgG obtained from...
متن کاملDownregulation in the expression of the serine dehydratase in the rat liver during chronic metabolic acidosis.
Blood pH controls the activity of important regulatory enzymes in the metabolism. Serine dehydratase (SerDH) transforms l-serine into pyruvate and ammonium and is involved in the regulation of gluconeogenesis from serine in the rat liver. In this work, we investigate the effect of chronic metabolic acidosis on the kinetics, specific protein level, tissue location, and mRNA levels of rat liver S...
متن کاملImmunochemical Studies of Serine Dehydratase and Ornithine Aminotransferase Regulation in Rat Liver in Viva*
Previous studies of serine dehydratase (EC 4.2.1.13) and ornithine aminotransferase (EC 2.6.1.13) adaptation in rat liver showed that in rats on a high protein diet, glucocorticoid administration increased serine dehydratase activity while simultaneously reducing the activity of ornithine aminotransferase. The present study examines the role of enzyme synthesis in the expression of these and ot...
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ژورنال
عنوان ژورنال: FEBS Letters
سال: 1970
ISSN: 0014-5793
DOI: 10.1016/0014-5793(70)80609-3