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L2262

Sigma-Aldrich

Lipopolysaccharides from Salmonella enterica serotype typhimurium

purified by gel-filtration chromatography

Sinônimo(s):

LPS

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About This Item

Número MDL:
MFCD00164404
Código UNSPSC:
12352201
NACRES:
NA.25

fonte biológica

Salmonella enterica (Serotype typhimurium)

Nível de qualidade

200

forma

lyophilized powder

purificado por

gel-filtration chromatography

Impurezas

<1% Protein

cor

white to faint yellow

solubilidade

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

Condições de expedição

ambient

temperatura de armazenamento

2-8°C

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Descrição geral

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

Aplicação

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).

Ações bioquímicas/fisiológicas

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.

Nota de preparo

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.

Outras notas

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

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Nº do produto
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Código de classe de armazenamento

11 - Combustible Solids

Classe de risco de água (WGK)

WGK 3

Ponto de fulgor (°F)

Not applicable

Ponto de fulgor (°C)

Not applicable

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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
Alun C Kirby et al.
Infection and immunity, 72(11), 6390-6400 (2004-10-27)
The location and functional properties of antigen-specific memory T-cell populations in lymphoid and nonlymphoid compartments following DNA immunization or infection with Salmonella were investigated. Epitope-specific CD8+ -T-cell expansion and retention during the memory phase were analyzed for DNA-immunized mice by
Rui F D S Mesquita et al.
Molecular and cellular biology, 34(4), 574-594 (2013-12-04)
The pathways which regulate resolution of inflammation and contribute to positive remodeling of the myocardium following injury are poorly understood. Here we show that protein kinase C epsilon (PKCε) cooperates with the phosphatase calcineurin (CN) to potentiate induction of cardioprotective
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