Results 231 to 240 of about 47,150 (283)
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Science Signaling, 2022
Urea metabolism in astrocytes that produce putrescine leads to memory impairment in Alzheimer’s disease.
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Urea metabolism in astrocytes that produce putrescine leads to memory impairment in Alzheimer’s disease.
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Putrescine biosensor based on putrescine oxidase from Kocuria rosea
Enzyme and Microbial Technology, 2012The novel putrescine oxidase based amperometric biosensor selectively measures putrescine, which can be considered as an indicator of microbial spoilage. Putrescine oxidase (PUOX, EC 1.4.3.10) was isolated from Kocuria rosea (Micrococcus rubens) by an improved and simplified purification process.
Beáta, Bóka +4 more
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Amperometric flow injection determination of putrescine and putrescine oxidase
Analytica Chimica Acta, 1998Abstract Flow injection methods for sensitive, accurate and rapid determination of diamines, mainly putrescine (PUT) and cadaverine (CAD), and diamine oxidase (DAO) are described. Putrescine determination is based on an immobilized enzyme reactor (IER) loaded with putrescine oxidase and amperometric detection of the produced hydrogen peroxide at a ...
Sayed A.M Marzouk +6 more
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Putrescine Bisamides from Aglaia gigantea
Journal of Natural Products, 2007Phytochemical analysis of the leaves of Aglaia gigantea collected in Vietnam yielded three cinnamoyl putrescine bisamide derivatives, which included the known compound dasyclamide ( 1), as well as two new natural products, gigantamide A ( 2) and grandiamide D ( 3). In this study, the structure of dasyclamide ( 1) was confirmed by X-ray crystallography.
Duong, Tu Ngoc +8 more
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Putrescine transport in human platelets
Biochimica et Biophysica Acta (BBA) - Biomembranes, 1985Putrescine transport has been studied in human platelets. The uptake of putrescine is saturable and appears to be an energy-dependent process, since it is inhibited by the uncoupler 2,4-dinitrophenol and low temperature. The evidence presented suggests that the uptake process is complex and may be dependent upon pH gradient, membrane potential, and ...
S G, Nadler, M T, Takahashi
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Uptake of putrescine by Tetrahymena
Zeitschrift f�r Zellforschung und Mikroskopische Anatomie, 1971The uptake of the diamine 3H-putrescine by Tetrahymena pyriformis GL was studied in cultures which were synchronized by heat shocks. An inverse correlation was found between the uptake of putrescine and the acid stability of DNA, but there was also a parallelism between putrescine uptake and the intracellular amount of putrescine. There was no evidence
B, Holm, H, Emanuelsson
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Molecular dynamics of putrescine
Journal of the Chemical Society, Faraday Transactions, 1996Molecular dynamics simulations of the cationic polyamine putrescine have been performed at T= 300 K. Partial charges of putrescine were calculated with both the HF/STO-3G and HF/6-3G* methods. Solvent was represented either explicitly or via a distance-dependent dielectric of the form Iµ=r.
Kevin Bryson, Robert J. Greenall
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Formation of putrescine and cinnamoyl putrescines in tobacco cell cultures
Phytochemistry, 1981Abstract A p -fluorophenylalanine- (PFP) resistant cell line of Nicotiana tabacum and wild type cells accumulating high and low levels of cinnamoyl putrescines, respectively, were used to study the formation of putrescine in the biosynthesis of cinnamoyl putrescines.
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1,4-Diaminobutane (Putrescine), Spermidine, and Spermine
Annual Review of Biochemistry, 1976As is evident from the above summary of the recent literature, plus many other papers not cited here, there is an extensive literature indicating the physiological significance of these amines. The most important studies can be summarized as follows. (a) Polyamines and their biosynthetic enzymes are ubiquitous.
C W, Tabor, H, Tabor
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Putrescine production by engineered Corynebacterium glutamicum
Applied Microbiology and Biotechnology, 2010Here, we report the engineering of the industrially relevant Corynebacterium glutamicum for putrescine production. C. glutamicum grew well in the presence of up to 500 mM of putrescine. A reduction of the growth rate by 34% and of biomass formation by 39% was observed at 750 mM of putrescine. C.
Schneider, Jens, Wendisch, Volker F.
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