L9764

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

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

Properties

• biological source: Salmonella enterica (Serotype minnesota Re 595 mutant)
• Quality Segment: 200
• 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

Description

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.

Safety Information

• Pictograms: GHS07
• Signal Word: Warning
• Hazard Codes: H302
• Precautionary Statements: P301 + P312 + P330
• Hazard Classifications: Acute Tox. 4 Oral
• Storage Class: 11 - Combustible Solids
• WGK: WGK 3
• Flash Point (°F): Not applicable
• Flash Point (°C): Not applicable
• PPE (personal protective equipment): dust mask type N95 (US), Eyeshields, Gloves