L2755

Lipopolysaccharide aus Escherichia coli O128:B12

purified by phenol extraction

• Synonym(e): LPS
• CAS-Nummer: 93572-42-0
• UNSPSC Code: 12352201
• EC Number: 297-473-0
• NACRES: NA.25
• MDL number: MFCD00164401

Eigenschaften

• biological source: Escherichia coli (O128:B12)
• Quality Segment: 200
• form: lyophilized powder
• purified by: phenol extraction
• impurities: <3% Protein (Lowry)
• color: white to yellow cast
• solubility: water: soluble
• shipped in: ambient
• storage temp.: 2-8°C

Beschreibung

General description

This product is phenol extracted from E. coli serotype O128:B12. The source strain is CDC 2440-69.

Application

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 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

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.

Sicherheitshinweise

• pictograms: GHS06
• signalword: Danger
• hcodes: H300
• pcodes: P264 - P270 - P301 + P310 - P405 - P501
• Hazard Classifications: Acute Tox. 2 Oral
• Lagerklasse: 6.1A - Combustible acute toxic Cat. 1 and 2 / very toxic hazardous materials
• wgk: WGK 3
• flash_point_f: Not applicable
• flash_point_c: Not applicable