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L6386

Sigma-Aldrich

Lipopolysaccharides from Salmonella typhosa

purified by phenol extraction

Synonyme(s) :

Lactose synthase B protein, LPS

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About This Item

Numéro MDL:
Code UNSPSC :
12352201
Nomenclature NACRES :
NA.25

Source biologique

bacterial (Salmonella typhosa)

Niveau de qualité

Forme

lyophilized powder

Produit purifié par

phenol extraction

Impuretés

<3% Protein (Lowry)

Couleur

white to yellow cast

Solubilité

water: 4.90-5.10 mg/mL, faintly hazy to hazy, colorless to faintly yellow

Conditions d'expédition

ambient

Température de stockage

2-8°C

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Description générale

This product is phenol extracted from Salmonella typhosa. The source strain is ATCC 10749.

Application

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).

Actions biochimiques/physiologiques

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.

Notes préparatoires

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.

Autres remarques

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

Pictogrammes

Skull and crossbones

Mention d'avertissement

Danger

Mentions de danger

Classification des risques

Acute Tox. 2 Oral

Code de la classe de stockage

6.1A - Combustible acute toxic Cat. 1 and 2 / very toxic hazardous materials

Classe de danger pour l'eau (WGK)

WGK 3

Point d'éclair (°F)

Not applicable

Point d'éclair (°C)

Not applicable


Certificats d'analyse (COA)

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Consulter la Bibliothèque de documents

Hanxiao Tu et al.
Journal of cellular and molecular medicine, 24(2), 1256-1267 (2019-12-07)
Autoimmune hepatitis (AIH) is a chronic liver disease due to autoimmune system attacks hepatocytes and causes inflammation and fibrosis. Intracellular signalling and miRNA may play an important role in regulation of liver injury. This study aimed to investigate the potential
Satoshi Ohtake et al.
Vaccine, 29(15), 2761-2771 (2011-02-09)
Foam drying, a modified freeze drying process, was utilized to produce a heat-stable, live attenuated Salmonella Typhi 'Ty21a' bacterial vaccine. Ty21a vaccine was formulated with pharmaceutically approved stabilizers, including sugars, plasticizers, amino acids, and proteins. Growth media and harvesting conditions
Yongqing Li et al.
Surgery, 156(2), 229-234 (2014-06-25)
We have recently demonstrated that in a rodent model of lipopolysaccharide (LPS)-induced shock, an increase in circulating citrullinated histone H3 (Cit H3) is associated with lethality of sepsis, and treatment with suberoylanilide hydroxamic acid (SAHA), a histone deacetylase (HDAC) inhibitor
Amy G Clark et al.
Autoimmunity, 46(3), 188-204 (2012-11-20)
Autoantibodies to diverse antigens escape regulation in systemic lupus erythematosus under the influence of a multitude of predisposing genes. To gain insight into the differential impact of diverse genetic backgrounds on tolerance mechanisms controlling autoantibody production in lupus, we established
Sebastian Steven et al.
British journal of pharmacology, 174(12), 1620-1632 (2016-07-21)
Excessive inflammation in sepsis causes microvascular thrombosis and thrombocytopenia associated with organ dysfunction and high mortality. The present studies aimed to investigate whether inhibition of dipeptidyl peptidase-4 (DPP-4) and supplementation with glucagon-like peptide-1 (GLP-1) receptor agonists improved endotoxaemia-associated microvascular thrombosis

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