Results 221 to 230 of about 5,586 (249)

Study of pyoverdine type and production by Pseudomonas aeruginosa isolated from cystic fibrosis patients: prevalence of type II pyoverdine isolates and accumulation of pyoverdine-negative mutations

Archives of Microbiology, 2001
The lungs of cystic fibrosis patients are frequently colonized by Pseudomonas aeruginosa, which produces high-affinity fluorescent peptidic siderophores, pyoverdines. Three pyoverdines which differ in their peptide chain and are easily differentiated by isoelectric focusing exist, only one being produced by a given strain. P.
De Vos, Daniel, De Chial, Magali, Cochez, Christel, Jansen, Silke, Tümmler, Burkhard, Meyer, Jean Marie, Cornelis, Pierre   +6 more
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Ferrofluid effect on Pseudomonas pyoverdine

Journal of Magnetism and Magnetic Materials, 2005
Abstract The magnetic fluid effect on some pigmented pathogen germs has been investigated. The fluorescence of the pyoverdine pigment obtained from Pseudomonas aeruginosa strain, cultivated in the presence of different magnetic fluid concentrations, was enhanced by magnetic fluid concentrations of 0.0015–1 ml/l.
Antoniea Poiata, Al. Vlahovici, Dorina-Emilia Creanga   +2 more
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Genomics of pyoverdine-mediated iron uptake in pseudomonads

Trends in Microbiology, 2003
Pyoverdines (PVDs) are complex siderophores produced by members of the fluorescent Pseudomonas. They comprise a dihydroxyquinoline fluorescent chromophore joined to a peptide of remarkably variable length and composition. In Pseudomonas aeruginosa, PVDs also function as signal molecules for the production of virulence factors. Genes responsible for the
Jacques, Ravel, Pierre, Cornelis
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Formation of the Chromophore of the Pyoverdine Siderophores by an Oxidative Cascade

Organic Letters, 2003
The pyoverdine chromophore is formed in a reaction involving a two-electron oxidation, a conjugate addition, and a second two-electron oxidation. This oxidative cascade can be carried out with polyphenol oxidase (PPO), MnO(2), and cell-free extracts from Pseudomonas aeruginosa. [reaction: see text]
Pieter C, Dorrestein, Keith, Poole, Tadhg P, Begley   +2 more
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ChemInform Abstract: The Biosynthesis of Pyoverdins.

ChemInform, 1995
AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 100 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
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Chemistry and Biology of Pyoverdines, Pseudomonas Primary Siderophores

Current Medicinal Chemistry, 2014
Pyoverdine is the generic name given to a vast family of fluorescent green-yellowish pigments produced by Pseudomonas species. Pseudomonas aeruginosa is an opportunistic pathogen, particularly infecting humans with compromised natural defenses. These infections result in significantly higher morbidity, longer hospitalization, increased mortality rates ...
C, Cézard, N, Farvacques, P, Sonnet
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The structure of a pyoverdine from Pseudomonas sp. CFML 96.188 and its relation to other pyoverdines with a cyclic C-terminus

Biometals, 2000
From Pseudomonas sp. CFML 96.188 a pyoverdine was isolated and its primary structure was elucidated by spectroscopic methods and degradation reactions. This strain is of interest as it accepts the structurally different pyoverdines from several other Pseudomonas strains.
M, Weber, K, Taraz, H, Budzikiewicz, V, Geoffroy, J M, Meyer   +4 more
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Exploring the sociobiology of pyoverdin-producing Pseudomonas.

Evolution; international journal of organic evolution, 2013
The idea that bacteria are social is a popular concept with implications for understanding the ecology and evolution of microbes. The view arises predominately from reasoning regarding extracellular products, which, it has been argued, can be considered "public goods." Among the best studied is pyoverdin-a diffusible iron-chelating agent produced by ...
Zhang X-X, Rainey PB
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Siderophore-Mediated Iron Uptake in Fluorescent Pseudomonas: Characterization of the Pyoverdine-Receptor Binding Site of Three Cross-Reacting Pyoverdines

Archives of Biochemistry and Biophysics, 2002
Two Pseudomonas fluorescens and one Pseudomonas aeruginosa strains, although producing structurally different pyoverdines, demonstrated highly efficient cross-reactions when tested for pyoverdine-mediated iron uptake. A ferripyoverdine receptor-deficient mutant of the P. aeruginosa strain was unable to use any of the three pyoverdines.
Meyer, Jean Marie, Geoffroy, Valérie, Baysse, Christine, Cornelis, Pierre, Barelmann, Insa, Taraz, Kambiz, Budzikiewicz, Herbert   +6 more
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Pseudoverdin, a compound related to the pyoverdin chromophore from a Pseudomonas aeruginosa strain incapable to produce pyoverdins.

Zeitschrift fur Naturforschung. C, Journal of biosciences, 1993
From a genetically manipulated strain of Pseudomonas aeruginosa ATCC 15692 (PAO1 strain) a compound named pseudoverdin, 3-formylamino-6,7-dihydroxycoumarin, was obtained which is related to the typical pyoverdin chromophore and thus allows to shed some light on the biogenesis of the latter.
I, Longerich, K, Taraz, H, Budzikiewicz, L, Tsai, J M, Meyer   +4 more
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