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Merck

L2262

Sigma-Aldrich

Lipopolysaccharide aus Salmonella typhimurium

purified by gel-filtration chromatography

Synonym(e):

LPS

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About This Item

MDL-Nummer:
UNSPSC-Code:
12352201
NACRES:
NA.25

Biologische Quelle

Salmonella enterica (Serotype typhimurium)

Qualitätsniveau

Form

lyophilized powder

Aufgereinigt durch

gel-filtration chromatography

Verunreinigungen

<1% Protein

Farbe

white to faint yellow

Löslichkeit

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

Versandbedingung

ambient

Lagertemp.

2-8°C

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Allgemeine Beschreibung

This product is extracted from Salmonella typhimurium and purified by gel filtration. The source strain is ATCC 7823.

Anwendung

Lipopolysaccharides (LPSs) are characteristic components of the cell wall of Gram-negative bacteria. LPS and its lipid A moiety stimulate cells of the innate immune system by the Toll-like receptor 4 (TLR4), a member of the Toll-like receptor protein family, which recognizes common pathogen-associated molecular-patterns (PAMPs).

Biochem./physiol. Wirkung

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.

Angaben zur Herstellung

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.

Sonstige Hinweise

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

Lagerklassenschlüssel

11 - Combustible Solids

WGK

WGK 3

Flammpunkt (°F)

Not applicable

Flammpunkt (°C)

Not applicable


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Infection and immunity, 72(11), 6390-6400 (2004-10-27)
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