P8124
Pyoverdines
from Pseudomonas fluorescens, >90% (HPLC)
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UNSPSC Code:
12352200
NACRES:
NA.32
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biological source
Pseudomonas fluorescens
Quality Level
Assay
>90% (HPLC)
form
powder
solubility
H2O: ~10 mg/mL
shipped in
wet ice
storage temp.
−20°C
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Application
Pyoverdines from Pseudomonas fluorescens has been used :
- in tryptophan fluorescence quenching to determine its binding to neutrophil-gelatinase-associated lipocalin (NGAL)
- to detect pyoverdine diffusion surrounding siderophore-conjugated monobactam (MB-1)-resistant colonies in chelexed, dialyzed Mueller-Hinton broth (CDMHB)
- for synchronous fluorescence spectra of purified pyoverdine
Biochem/physiol Actions
Pyoverdines help in promoting plant growth by chelating iron and rendering it unavailable for plant pathogens. The ferri-pyoverdine complex acts as a signaling molecule inducing the production of secreted virulence factors in Pseudomonas aeruginosa.
Pyoverdines, also called pseuobactins and pyoverdins, are fluorescent siderophores that have high affinity for iron (1032 M-1), and are synthesized by fluorescent pseudomonads under iron-deficient growth conditions. Pyoverdines were shown to prevent iron toxicity produced by iron overload in hepatocyte cultures and effectively scavenges the hydroxyl and peroxyl radicals. Pyoverdines are effective in acquiring iron from transferrin and lactoferrin. Pyoverdines are also involved in the suppression of pythium-induced damping-off of tomato and promotion of growth in some higher plants.
Physical form
Supplied as a mixture containing mainly the succinic acid (MW=1161), 2-hydroxy glutaramide (MW=1190), and succinamide (MW=1160) forms of pyoverdines.
related product
Product No.
Description
Pricing
WGK
WGK 3
Flash Point(F)
Not applicable
Flash Point(C)
Not applicable
Certificates of Analysis (COA)
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Adaptation-based resistance to siderophore-conjugated antibacterial agents by Pseudomonas aeruginosa.
Tomaras AP
Antimicrobial Agents and Chemotherapy, 57(9), 4197-4207 (2013)
Pyoverdine, the Major Siderophore in Pseudomonas aeruginosa, Evades NGAL Recognition.
Peek ME
Interdisciplinary perspectives on infectious diseases, 843509-843509 (2012)
Correction: Multicolor Whole-Cell Bacterial Sensing Using a Synchronous Fluorescence Spectroscopy-Based Approach.
PLoS ONE (2015)
Purification of Pyoverdines of Pseudomonas fluorescens 2-79 by Copper-Chelate Chromatography.
Xiao R and Kisaalita WS
Applied and Environmental Microbiology, 61(11), 3769-3774 (1995)
Mylene Vaillancourt et al.
PLoS pathogens, 19(4), e1010942-e1010942 (2023-04-08)
During chronic cystic fibrosis (CF) infections, evolved Pseudomonas aeruginosa antibiotic resistance is linked to increased pulmonary exacerbations, decreased lung function, and hospitalizations. However, the virulence mechanisms underlying worse outcomes caused by antibiotic resistant infections are poorly understood. Here, we investigated
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