MilliporeSigma
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L4268

Sigma-Aldrich

Lipopolysaccharides from Klebsiella pneumoniae

purified by phenol extraction

Synonym(s):
LPS
MDL number:
NACRES:
NA.25

Quality Level

biological source

bacterial (Klebsiella pneumoniae)

form

lyophilized powder

purified by

phenol extraction

impurities

<3% Protein (Lowry)

shipped in

ambient

storage temp.

2-8°C

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General description

This product is phenol extracted from Klebsiella pneumoniae. The source strain is ATCC 15380.

Packaging

10 mg in glass bottle
100 mg in poly bottle

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.

Storage Class Code

13 - Non Combustible Solids

WGK

WGK 3

Flash Point(F)

Not applicable

Flash Point(C)

Not applicable

Personal Protective Equipment

dust mask type N95 (US), Eyeshields, Gloves

Certificate of Analysis

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Certificate of Origin

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