Results 211 to 220 of about 29,556 (259)
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ChemInform, 2005
AbstractFor Abstract see ChemInform Abstract in Full Text.
Bienz, Stefan +3 more
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AbstractFor Abstract see ChemInform Abstract in Full Text.
Bienz, Stefan +3 more
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Journal of Chromatography B: Biomedical Sciences and Applications, 1982
Putrescine, spermidine, spermine and their derivatives are considered to be potential markers of certain diseases. Routine methods have, therefore, been developed in the course of the last decade. Several automated liquid chromatographic and gas chromatographic methods are presently at our disposal, which meet the practical requirements of sensitivity ...
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Putrescine, spermidine, spermine and their derivatives are considered to be potential markers of certain diseases. Routine methods have, therefore, been developed in the course of the last decade. Several automated liquid chromatographic and gas chromatographic methods are presently at our disposal, which meet the practical requirements of sensitivity ...
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Journal of Bacteriology, 1977
Polyamines were determined by n-butanol extraction and thin-layer chromatography in four trypanosomatids: Trypanosoma brucei (rat infection) and cultures of Crithidia fasciculata, Leptomonas sp., and Trypanosoma mega. All had putrescine and spermidine but no detectable spermine.
C J, Bacchi, G Y, Lipschik, H C, Nathan
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Polyamines were determined by n-butanol extraction and thin-layer chromatography in four trypanosomatids: Trypanosoma brucei (rat infection) and cultures of Crithidia fasciculata, Leptomonas sp., and Trypanosoma mega. All had putrescine and spermidine but no detectable spermine.
C J, Bacchi, G Y, Lipschik, H C, Nathan
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Development of Polyamine Lassos as Polyamine Transport Inhibitors
ACS Medicinal Chemistry Letters, 2022Nine- and twelve-membered triaza-macrocycles were appended to one end of homospermidine to make polyamine lassos. These compounds were shown to be potent polyamine transport inhibitors (PTIs) using pancreatic ductal adenocarcinoma L3.6pl cells, which have high polyamine transport activity. The smaller triazacyclononane-based lasso significantly reduced
Aiste Dobrovolskaite +3 more
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Molecular Biotechnology, 1999
The polyamines spermine, spermidine, and putrescine are small organic molecules one or more of which are present in all living organisms. Many natural products contain polyamine residues. Polyamines are synthesized by a highly regulated pathway from arginine or ornithine and also can be transported in and out of cells.
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The polyamines spermine, spermidine, and putrescine are small organic molecules one or more of which are present in all living organisms. Many natural products contain polyamine residues. Polyamines are synthesized by a highly regulated pathway from arginine or ornithine and also can be transported in and out of cells.
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Biosynthesis of polyamines and polyamine-containing molecules
Biochemical Journal, 2016Polyamines are evolutionarily ancient polycations derived from amino acids and are pervasive in all domains of life. They are essential for cell growth and proliferation in eukaryotes and are essential, important or dispensable for growth in bacteria.
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Recueil des Travaux Chimiques des Pays-Bas, 1936
AbstractThe high boiling amines, obtained by the interaction of 1: 3‐dibromo‐propane and 1: 2‐diamino‐ethane hydrate, have been investigated. The lower terms contain straight chains of dimethylene and trimethylene groups separated by nitrogen atoms but in the higher boiling fractions cyclic amines are present.
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AbstractThe high boiling amines, obtained by the interaction of 1: 3‐dibromo‐propane and 1: 2‐diamino‐ethane hydrate, have been investigated. The lower terms contain straight chains of dimethylene and trimethylene groups separated by nitrogen atoms but in the higher boiling fractions cyclic amines are present.
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Journal of Chromatography A, 1965
The separation of polyethylene polyamines by various forms of chromatography has been studied. Ethylenediamine is easily separated from the higher polyamines by thin-layer chromatography and by ion-exchange chromatography. Diethylenetriamine, triethylenetetramine and tetraethylenepentamine can be separated by gas-liquid chromatography on Teflon powder ...
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The separation of polyethylene polyamines by various forms of chromatography has been studied. Ethylenediamine is easily separated from the higher polyamines by thin-layer chromatography and by ion-exchange chromatography. Diethylenetriamine, triethylenetetramine and tetraethylenepentamine can be separated by gas-liquid chromatography on Teflon powder ...
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Polyamine Oxidases and Oxidized Polyamines
2021Polyamine oxidases that act at the secondary amino group would be further subdivided according to whether diaminopropane or aminopropionaldehyde were among the products. The highest specific activity was found in the peroxisomal fraction, where its presence has been confirmed histochemically in both rat liver and kidney, although polyamine oxidase was ...
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American Journal of Physiology-Lung Cellular and Molecular Physiology, 2000
The natural polyamines putrescine, cadaverine, spermidine, and spermine are found in all cells. These (poly)cations exert interactions with anions, e.g., DNA and RNA. This feature represents their best-known direct physiological role in cellular functions: cell growth, division, and differentiation.
P H, Hoet, B, Nemery
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The natural polyamines putrescine, cadaverine, spermidine, and spermine are found in all cells. These (poly)cations exert interactions with anions, e.g., DNA and RNA. This feature represents their best-known direct physiological role in cellular functions: cell growth, division, and differentiation.
P H, Hoet, B, Nemery
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