Results 171 to 180 of about 35,273 (228)
Synthesis and use of polyamine derivatives as internal mass spectrometry standards [PDF]
Dar, Sami Ullah
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Probiotic and microbial modulation of polyamine production: an emerging avenue for neuroprotection in neurodegenerative disorders. [PDF]
Amino AcidsAdhikari T, Saha P.
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Glutamate, Ornithine, Arginine, Proline, and Polyamine Metabolic Interactions: The Pathway Is Regulated at the Post-Transcriptional Level [PDF]
Frontiers in Plant Science, 2016 The metabolism of glutamate into ornithine, arginine, proline, and polyamines is a major network of nitrogen-metabolizing pathways in plants, which also produces intermediates like nitric oxide, and γ-aminobutyric acid (GABA) that play critical roles in ...
Maegan A Gagne, Rakesh Minocha
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Ornithine decarboxylase and ornithine decarboxylase‐inhibiting activity in rat thymocytes
Cell Biochemistry and Function, 1992AbstractIsolation of thymocytes from rat thymus resulted in the disappearance of the high activity of ornithine decarboxylase (ODC) that characterizes the thymus of young rats, together with the appearance of an antizyme‐like ODC inhibiting activity, which showed a chromatographic profile that resembled that of dexamethasone‐treated rat thymus ...
C, Stefanelli +4 more
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Stereochemistry of Ornithine Decarboxylase Reaction
The Journal of Biochemistry, 1984To determine the steric course of the reaction of bacterial ornithine decarboxylase [EC 4.1.1.17], we have carried out the decarboxylation of L-ornithine in 2H2O and that of DL-[2-2H]ornithine in H2O, and obtained putrescine bearing a single deuterium atom in the C-1 position.
Y, Asada +4 more
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Ornithine decarboxylase in Paracoccidioides brasiliensis
Archives of Microbiology, 1996Ornithine decarboxylase in Paracoccidioides brasiliensis, a dimorphic human pathogenic fungus, was more active at 37 degrees C in the yeast phase and at 30 degrees C in the mycelial phase. In contrast to other fungal systems, yeast growth and mycelium-to-yeast transition in P.
G, San-Blas +3 more
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Turnover of trypanosomal ornithine decarboxylases
Biochemical Society Transactions, 2003Interestingly, there is a major difference in turnover rate between ornithine decarboxylases (ODCs) from various trypanosomatids. ODCs from Trypanosoma brucei and Leishmania donovani are both stable proteins, whereas ODC from Crithidia fasciculata is a metabolically unstable protein in the parasite. C.
L, Persson, A, Jeppsson, S, Nasizadeh
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In SituMicroassay of Ornithine Decarboxylase
Analytical Biochemistry, 1996Ornithine decarboxylase catalyses the principal step in the biosynthesis of polyamines (1, 2) and is reported to be a proto-oncogen implicated in the control of both FIG. 1. Modified rubber stopper. cell growth and transformation (3). Its activity is induced by a number of agents such as amino acids, pharmaceuticals, hormones, and growth stimuli (4 ...
C, Lobo, I N, de Castro, F J, Alonso
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Studies on Ornithine Decarboxylase Antizyme
1988Tissue levels of ornithine decarboxylase (ODC) are under negative feedback regulation by polyamines. Thus, exogenously added polyamines cause a rapid decrease of ODC activity. Recent studies in various laboratories have indicated that the rapid decay of ODC activity caused by polyamines is due both to suppression of ODC synthesis (1–3) and to ...
S, Hayashi +5 more
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A radiometric microassay for ornithine decarboxylase
Neuroscience, 1978Abstract A simple method for purifying [ 3 H] l -ornithine and incubation conditions suitable for estimating l -ornithine decarboxylase activity are described. Routine and recycled cation exchange procedures for separating putrescine from ornithine are outlined. Blanks using the routine cation exchange method average approx.
J L, Maderdrut, R W, Oppenheim
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