Lipopolysaccharides from Serratia marcescens
SIGMA/L6136 - purified by phenol extraction
Synonym: LPS
MDL Number: MFCD00131520
Product Type: Chemical
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.
| biological source | Serratia marcescens |
| color | white to yellow cast |
| form | lyophilized powder |
| impurities | <3% Protein (Lowry) |
| purified by | phenol extraction |
| Quality Level | 200  |
| shipped in | ambient |
| solubility | water: 4.90-5.10, faintly hazy to hazy, colorless to faint yellow or tan |
| storage temp. | 2-8°C |
| 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. |
| General description: | This product is phenol extracted from Serratia marcescens. The source strain is ATCC 21639. |
| 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. |
| 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. |
| RIDADR | NONH for all modes of transport |
| WGK Germany | WGK 3 |
| Flash Point(F) | Not applicable |
| Flash Point(C) | Not applicable |
| Storage Temp. | 2-8°C |
| UNSPSC | 12352201 |