Results 131 to 140 of about 661 (164)

Pyoverdine and Pyochelin Measurements

2014
Siderophores are small organic chelators (of molecular weight between 200 and 2,000 Da), having a very high affinity for iron (10(17)-10(43) M(-1)). They are synthesized by bacteria and secreted into their environment in order to get access to iron, an essential element for bacterial growth.
Françoise, Hoegy, Gaetan L A, Mislin, Isabelle J, Schalk   +2 more
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Solution Structure of Pyoverdin GM-II

Biochemistry, 1994
The three-dimensional structure in solution of ferri-pyoverdin GM-II isolated from the culture medium of Pseudomonas fluorescens was determined by application of NMR methods to the Ga3+ analogue. Distance geometry calculations were performed with FILMAN using interproton distances and coupling constants as constraints.
G, Mohn, P, Koehl, H, Budzikiewicz, J F, Lefèvre   +3 more
openaire   +2 more sources

The biosynthesis of pyoverdins

Pure and Applied Chemistry, 1994
Abstract
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Siderotyping A Powerful Tool for the Characterization of Pyoverdines

Current Topics in Medicinal Chemistry, 2001
Tools for the identification of bacteria are of great importance especially for taxonomical and medical purposes. In the case of fluorescent pseudomonads a quick and unambiguous identification is possible by methods that are referred to as "siderotyping".
R, Fuchs, M, Schäfer, V, Geoffroy, J M, Meyer   +3 more
openaire   +2 more sources

Complexation of Th (IV) with the siderophore pyoverdine A

Journal of Alloys and Compounds, 1998
The complexation of thorium (IV) ions in aqueous solutions by pyoverdine A has been studied. On the basis of a simple model, the thermodynamical equilibrium constant was determined and the value KTh=(0.15±0.03) M was compared with those previously obtained with uranyl ions.
Bouby, M., Billard, I., Maccordick, H.J.
openaire   +2 more sources

Recycling of Pyoverdin on the FpvA Receptor after Ferric Pyoverdin Uptake and Dissociation in Pseudomonas aeruginosa

Biochemistry, 2002
Under iron-limiting conditions, Pseudomonas aeruginosa secretes a fluorescent siderophore called pyoverdin (PaA), which, after complexing iron, is transported back into the cells via its outer membrane receptor FpvA. The recent finding that all FpvA receptors on the bacterial cell surface are loaded with iron-free PaA under iron limiting conditions has
Schalk, Isabelle J, Abdallah, Mohamed A, Pattus, Franc   +2 more
openaire   +3 more sources

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.
Jean-Marie Meyer, Christine Baysse, Pierre Cornelis   +2 more
exaly   +4 more sources

Activation of 6-phosphogluconate dehydrase by pyoverdine

Biochemical and Biophysical Research Communications, 1968
Abstract Pseudomonas mildenbergii , when grown without iron, produces a green fluorescent pigment, pyoverdine ( Love & Hulcher, 1964 ), which has a molecular weight of 2,380 and consists of a peptide of threonine, serine, glutamic acid and lysine (4:2:1:1, molar ratio) with an N-methyl phenylacetyl hydroxamic acid group bound to the peptide
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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
openaire   +1 more source