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L9764

Sigma-Aldrich

Lipopolysaccharides (rough strains) from Salmonella enterica serotype minnesota Re 595 (Re mutant)

Synonym(s):

LPS

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About This Item

MDL number:
UNSPSC Code:
12352201
NACRES:
NA.25

biological source

Salmonella enterica (Serotype minnesota Re 595 mutant)

Quality Level

form

lyophilized powder

impurities

<3% Protein (Lowry)

color

white to yellow cast

solubility

water: 0.90-1.10 mg/mL, hazy to turbid, colorless to faintly yellow

shipped in

ambient

storage temp.

2-8°C

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General description

This product is prepared from Salmonella Minnesota strain Re 595 (Re mutant) using a phenol-chloroform-petroleum ether extraction procedure. The source strain is ATCC 49284. A unique structure in the LPS of strain Re 595 was shown to induce secretion and aggregation in human platelets.

Application


  • Charge and aggregation pattern govern the interaction of plasticins with LPS monolayers mimicking the external leaflet of the outer membrane of Gram-negative bacteria: This study examines how charge and aggregation patterns affect the interaction of plasticins with lipopolysaccharides (LPS) from rough strains like Salmonella enterica serotype Minnesota Re 595. The findings contribute to understanding the molecular interactions involved in microbial resistance mechanisms (Michel et al., 2015).

Biochem/physiol Actions

Lipopolysaccharides (LPS) are localized in the outer layer of the membrane and are, in noncapsulated strains, exposed on the cell surface. They contribute to the integrity of the outer membrane, and protect the cell against the action of bile salts and lipophilic antibiotics.

Preparation Note

Prepared by phenol-chloroform-petroleum ether extraction.

The product is soluble in water (5 mg/ml) or cell culture medium (1 mg/ml) yielding a hazy, faint yellow solution. A more concentrated, though still hazy, solution (20 mg/ml) has been achieved in aqueous saline after vortexing and warming to 70-80 oC. Lipopolysaccharides are molecules that form micelles in every solvent. Hazy solutions are observed in water and phosphate buffered saline. Organic solvents do not give clearer solutions. Methanol yields a turbid suspension with floaters, while water yields a homogeneously hazy solution.

Other Notes

To gain a comprehensive understanding of our extensive range of Lipopolysaccharides for your research, we encourage you to visit our Carbohydrates Category page.

pictograms

Exclamation mark

signalword

Warning

hcodes

Hazard Classifications

Acute Tox. 4 Oral

Storage Class

11 - Combustible Solids

wgk_germany

WGK 3

flash_point_f

Not applicable

flash_point_c

Not applicable

ppe

dust mask type N95 (US), Eyeshields, Gloves


Certificates of Analysis (COA)

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Tom C Freeman et al.
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S Kumar et al.
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Studies have shown that glycosylphosphatidylinositols (GPIs) of Plasmodium falciparum activate macrophages mainly through Toll-like receptor 2 (TLR2)-mediated signalling and to certain extent through TLR4-mediated signalling to induce proinflammatory cytokine production. However, the ability of parasite GPIs to activate dendritic cells
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Cholesteatoma is a potentially life-threatening middle ear lesion due to the formation of an inflamed ectopic mass of keratinizing squamous epithelium. Surgical removal remains the only treatment option, emphasizing the need to gain a better understanding of this severe disease.
G Banos et al.
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Articles

Explore the structure, function, and diverse applications of Lipopolysaccharides. Discover their role in bacteria, serological specificity, and research potential.

Our team of scientists has experience in all areas of research including Life Science, Material Science, Chemical Synthesis, Chromatography, Analytical and many others.

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