منابع مشابه
Putrescine catabolism in mammalian brain.
In contrast with putrescine (1,4-diaminobutane), which is a substrate of diamine oxidase, monoacetylputrescine is oxidatively deaminated both in vitro and in vivo by monoamine oxidase. The product of this reaction is N-acetyl-gamma-aminobutyrate. The existence of a degradative pathway in mammalian brain for putrescine is shown, which comprises acetylation of putrescine, oxidative deamination of...
متن کاملPathway and enzyme redundancy in putrescine catabolism in Escherichia coli.
Putrescine as the sole carbon source requires a novel catabolic pathway with glutamylated intermediates. Nitrogen limitation does not induce genes of this glutamylated putrescine (GP) pathway but instead induces genes for a putrescine catabolic pathway that starts with a transaminase-dependent deamination. We determined pathway utilization with putrescine as the sole nitrogen source by examinin...
متن کاملGenetic manipulation of the metabolism of polyamines in poplar cells. The regulation of putrescine catabolism.
We investigated the catabolism of putrescine (Put) in a non-transgenic (NT) and a transgenic cell line of poplar (Populus nigra x maximowiczii) expressing a mouse (Mus musculus) ornithine (Orn) decarboxylase (odc) cDNA. The transgenic cells produce 3- to 4-fold higher amounts of Put than the NT cells. The rate of loss of Put from the cells and the initial half-life of cellular Put were determin...
متن کاملPutrescine as a biochemical marker of malignant brain tumors.
Putrescine, spermidine, and spermine levels were determined in normal brain and central nervous system-related tumor tissues obtained at operation from 50 patients. The biochemical data were correlated with morphological histopathological descriptions of the same tissues. There was little variation in putrescine levels in normal cerebral cortical tissue. Subcortical white matter had lower putre...
متن کاملGlucose transporters in mammalian brain.
(;lucose is the primary energy source for mammalian brain and a continuous supply is vital for normal cerebral function. At rest, the brain is responsible for metabolizing up to 60% of the available circulating glucose, and the efficient transport of glucose across the blood-brain barrier (BRH) and into the various cells that make up the brain is essential. Of the six facilitative glucose trans...
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ژورنال
عنوان ژورنال: Biochemical Journal
سال: 1974
ISSN: 0264-6021
DOI: 10.1042/bj1440029