Metabolic Characterization of Hyoscyamus niger Ornithine Decarboxylase
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منابع مشابه
Trichomonas vaginalis: characterization of ornithine decarboxylase.
Ornithine decarboxylase (ODC), the lead enzyme in polyamine biosynthesis, was partially purified from Trichomonas vaginalis and its kinetic properties were studied. The enzyme appears to be of special significance in this anaerobic parasite, since the arginine dihydrolase pathway generates ATP as well as putrescine from arginine. ODC from T. vaginalis had a broad substrate specificity, decarbox...
متن کاملCharacterization of ornithine decarboxylase of tobacco cells and tomato ovaries.
Some characteristics of L-ornithine decarboxylase of tomato ovaries and tobacco cells are described. The enzyme has a pH optimum of 8.0. It requires pyridoxal phosphate and thiol reagent (dithiothreitol) for activity. It is specific for L-ornithine and has an apparent Km of 1.4 X 10-4 M. It has an apparent molecular weight of 107000. Putrescine inhibited the activity in vitro. Spermidine and sp...
متن کاملCharacterization of the Entamoeba histolytica Ornithine Decarboxylase-Like Enzyme
BACKGROUND The polyamines putrescine, spermidine, and spermine are organic cations that are required for cell growth and differentiation. Ornithine decarboxylase (ODC), the first and rate-limiting enzyme in the polyamine biosynthetic pathway, is a highly regulated enzyme. METHODOLOGY AND RESULTS To use this enzyme as a potential drug target, the gene encoding putative ornithine decarboxylase ...
متن کاملRegulation of mammalian ornithine decarboxylase.
17 Melvin, M. A. L. and Keir, H. M. (1978) Expt. Cell Res. 111,231-236 18 Melvin, M. A. L. and Keir, H. M. (1979) Biochem. SOC. Trans. 7, 689-691 19 Wallace, H. M. and Keir, H. M. (1981) Biochim. Biophys. Acta 676,25-30 20 Melvin, M. A. L., Wallace, H. M. and Keir, H. M. (1980) Physiol. Chem. Phys. 12, 431-439 21 Coleman, C. S. and Wallace, H. M. (1990) 'Biochem. SOC. Trans. 18, 1228-1229 22 Wa...
متن کاملRegulation of Adrenal Ornithine Decarboxylase
were not secondary to stimulation of steroidogenesis, since hydrocortisone had no effect on adrenal ornithine decarboxylase although it did stimulate activity of the enzyme in the liver and kidney. ACTH, given subcutaneously to hypophysectomized rats, induced striking increases in adrenal cyclic AMP levels within 15-30 min with a fall towards the base line in 1 h. Increases in ornithine decarbo...
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ژورنال
عنوان ژورنال: Frontiers in Plant Science
سال: 2019
ISSN: 1664-462X
DOI: 10.3389/fpls.2019.00229