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Merck

L2262

Sigma-Aldrich

Lipopolysaccharide aus Salmonella typhimurium

purified by gel-filtration chromatography

Synonym(e):

LPS

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About This Item

MDL-Nummer:
UNSPSC-Code:
12352201
NACRES:
NA.25

Biologische Quelle

Salmonella enterica (Serotype typhimurium)

Qualitätsniveau

Form

lyophilized powder

Aufgereinigt durch

gel-filtration chromatography

Verunreinigungen

<1% Protein

Farbe

white to faint yellow

Löslichkeit

water: 0.90-1.10 mg/mL, hazy to turbid, colorless to faintly yellow

Versandbedingung

ambient

Lagertemp.

2-8°C

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Allgemeine Beschreibung

This product is extracted from Salmonella typhimurium and purified by gel filtration. The source strain is ATCC 7823.

Anwendung

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. Wirkung

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.

Angaben zur Herstellung

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.

Sonstige Hinweise

To gain a comprehensive understanding of our extensive range of Lipopolysaccharides for your research, we encourage you to visit our Carbohydrates Category page.

Lagerklassenschlüssel

11 - Combustible Solids

WGK

WGK 3

Flammpunkt (°F)

Not applicable

Flammpunkt (°C)

Not applicable


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Die Dokumentenbibliothek aufrufen

Barbara Chirullo et al.
Frontiers in microbiology, 6, 985-985 (2015-10-07)
Salmonella Typhimurium (S. Typhimurium) is responsible for foodborne zoonotic infections that, in humans, induce self-limiting gastroenteritis. The aim of this study was to evaluate whether the wild-type strain S. Typhimurium (STM14028) is able to exploit inflammation fostering an active infection.
Rossella Paolillo et al.
International immunopharmacology, 9(11), 1265-1271 (2009-08-04)
Probiotics, defined as live microbial food supplements which improve the health of the host, have obtained increasing medical importance. In the intestine they may prevent the overgrowth of pathogenic bacteria, increase the resistance of the gut to invasion by pathogens
Jia Lin Ren et al.
Scientific reports, 8(1), 429-429 (2018-01-13)
Inflammation is in a wide spectrum of retinal diseases, causing irreversible blindness and visual impairment. We have previously demonstrated that Green Tea Extract (GTE) is a potent anti-inflammatory agent for anterior uveitis. Here we investigated the anti-inflammatory effect of GTE
Justin R Piro et al.
Journal of neuroinflammation, 15(1), 142-142 (2018-05-16)
Acute neurological insults caused by infection, systemic inflammation, ischemia, or traumatic injury are often associated with breakdown of the blood-brain barrier (BBB) followed by infiltration of peripheral immune cells, cytotoxic proteins, and water. BBB breakdown and extravasation of these peripheral
Varkha Agrawal et al.
Biology of reproduction, 91(5), 119-119 (2014-09-26)
Platelet-activating factor (PAF), a potent phospholipid activator of inflammation that signals through its cognate receptor (platelet-activating factor receptor, PTAFR), has been shown to induce preterm delivery in mice. Toll-like receptors (TLRs) are transmembrane receptors that mediate innate immunity. We have

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