L6136

Lipopolysaccharides from Serratia marcescens

purified by phenol extraction

• Synonym(s): LPS
• UNSPSC Code: 12352201
• NACRES: NA.25
• MDL number: MFCD00131520

Properties

• biological source: Serratia marcescens
• Quality Segment: 200
• form: lyophilized powder
• purified by: phenol extraction
• impurities: <3% Protein (Lowry)
• color: white to yellow cast
• solubility: water: 4.90-5.10, faintly hazy to hazy, colorless to faint yellow or tan
• shipped in: ambient
• storage temp.: 2-8°C

Description

General description

This product is phenol extracted from Serratia marcescens. The source strain is ATCC 21639.

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.

Safety Information

• Storage Class: 11 - Combustible Solids
• wgk: WGK 3
• flash_point_f: Not applicable
• flash_point_c: Not applicable