Results 191 to 200 of about 2,795 (224)

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
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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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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.
J. Meyer, V. Geoffroy, Christine Baysse, P. Cornelis, Insa Barelmann, K. Taraz, H. Budzikiewicz   +6 more
semanticscholar   +4 more sources

Fluorescent complex of pyoverdin with aluminum

Journal of Inorganic Biochemistry, 2003
When a pyoverdin (PV), (a siderophore) from Pseudomonas fluorescens, binds aluminum 1:1, its natural fluorescence almost doubles, whereas PV-Fe is non-fluorescent. Complex formation allows [Al] determination down to 1 mug/l. Fe(III) in the sample interferes with [Al] determination, but added after PV, improves the assay's performance.
A, del Olmo, C, Caramelo, C, SanJose
openaire   +2 more sources

Precursor activation in a pyoverdine biosynthesis

Biochimica et Biophysica Acta (BBA) - Protein Structure and Molecular Enzymology, 1990
The siderophore produced by Azotobacter vinelandii strain UW belongs to a large family of peptidic siderophores collectively called pyoverdines. The biosynthesis of the peptidyl moiety of this siderophore was shown to involve activation of the constituent amino acids as their adenylates, as demonstrated by amino acid-dependent ATP-[32P]pyrophosphate ...
N, Menhart, T, Viswanatha
openaire   +2 more sources

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

The biosynthesis of pyoverdins

Pure and Applied Chemistry, 1994
Abstract
openaire   +1 more source

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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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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Pyoverdine type siderophores from pseudonomas fluorescens

Tetrahedron, 1987
Abstract The structure of pyoverdine I, II and III isolated from the culture medium of Pseudomonas fluoresaens have been elucidated by spectroscopic methods and degradation studies. The pyoverdines consist of a chromophore which could be identified as 5-amino-2,3-dihydro-8,9-dihydroxy-1H-pyrimido [l,2-a]quinoline-l-R-carboxy1ic acid substituted at ...
K. Poppe, K. Taraz, H. Budzikiewicz
openaire   +1 more source