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Synthesis and use of polyamine derivatives as internal mass spectrometry standards [PDF]

Dar, Sami Ullah
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Ornithine decarboxylase and ornithine decarboxylase‐inhibiting activity in rat thymocytes

Cell Biochemistry and Function, 1992
AbstractIsolation 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, C, Rossoni, F, Ferrari, F, Flamigni, C M, Caldarera   +4 more
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Stereochemistry of Ornithine Decarboxylase Reaction

The Journal of Biochemistry, 1984
To 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, K, Tanizawa, K, Nakamura, M, Moriguchi, K, Soda   +4 more
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Ornithine decarboxylase in Paracoccidioides brasiliensis

Archives of Microbiology, 1996
Ornithine 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, F, Sorais, F, San-Blas, J, Ruiz-Herrera   +3 more
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Turnover of trypanosomal ornithine decarboxylases

Biochemical Society Transactions, 2003
Interestingly, 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, 1996
Ornithine 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

1988
Tissue 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, Y, Murakami, S, Matsufuji, M, Nishiyama, R, Kanamoto, T, Kameji   +5 more
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A radiometric microassay for ornithine decarboxylase

Neuroscience, 1978
Abstract 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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Ornithine decarboxylase in perfused rat heart

Journal of Molecular and Cellular Cardiology, 1986
In the isolated perfused rat hearts, the activity of tissue ornithine decarboxylase gradually decreases over 90 min. In contrast, the activity of S-adenosylmethionine decarboxylase, lactate dehydrogenase, and glutamate-oxalacetate transaminase stays unchanged after a small decrease during the first 10 min.
S, Astancolle, F, Bacciottini, P, Davalli, G, Piccinini, A, Casti, A, Corti   +5 more
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Ornithine decarboxylase and S-adenosylmethionine decarboxylase in trypanosomatids

Biochemical Society Transactions, 2007
The production of polyamines has been shown to be an effective target for a drug against the West African form of sleeping sickness caused by Trypanosoma brucei gambiense. T. brucei belongs to the group of protozoan parasites classed as trypanosomatids.
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