1. A compound or complex of lipid and carbohydrate. 2. The l. (endotoxin) released from the cell walls of Gram-negative organisms that produces septic shock.

* * *

li·po·poly·sac·cha·ride .lip-ō-.päl-i-'sak-ə-.rīd, .lī-pō- n a large molecule consisting of lipids and sugars joined by chemical bonds abbr. LPS

* * *

a complex molecule containing both a lipid component and a polysaccharide component. Lipopolysaccharides are constituents of the cell walls of Gram-negative bacteria and are important in determining the antigenic properties of these bacteria.

* * *

lipo·poly·sac·cha·ride (lip″o-pol″e-sakґə-rīd) 1. a complex of lipid and polysaccharide. 2. a major component of the cell wall of gram-negative bacteria, a type of endotoxin and important group-specific antigen (O antigen). The lipopolysaccharide molecule consists of three parts: lipid A, a glycolipid responsible for the endotoxic activity, which is covalently linked to a heteropolysaccharide chain; the first part of the chain is the core polysaccharide, which is constant within related strains; and the second part of the chain is the O-specific chain, which is highly variable. Lipopolysaccharide from Escherichia coli is a commonly used B-cell mitogen (polyclonal activator) in laboratory immunology. Abbreviated LPS.

Medical dictionary. 2011.

Игры ⚽ Нужно сделать НИР?

Look at other dictionaries:

  • Lipopolysaccharide — (LPS) sind relativ thermostabile (wärmeunempfindliche) Verbindungen aus fettähnlichen (Lipo ) Bestandteilen und Zucker Bestandteilen (Polysacchariden). Sie sind in der Äußeren Membran gramnegativer Bakterien enthalten. Sie wirken als Antigene und …   Deutsch Wikipedia

  • Lipopolysaccharide —   [ zaxa ], aus Lipiden und Polysacchariden bestehende charakteristische Bestandteile der äußeren Zellmembran gramnegativer Bakterien …   Universal-Lexikon

  • lipopolysaccharide — [lip΄ō pä΄lē sak′ə rīd΄, lī΄pōlē sak′ə rīd΄] n. Biochem. a large molecule that contains a polysaccharide and a lipid, found especially in cell membranes …   English World dictionary

  • Lipopolysaccharide — Structure of a lipopolysaccharide Lipopolysaccharides (LPS), also known as lipoglycans, are large molecules consisting of a lipid and a polysaccharide joined by a covalent bond; they are found in the outer membrane of Gram negative bacteria, act… …   Wikipedia

  • Lipopolysaccharide — Le lipopolysaccharide (LPS) est un composant essentiel (il n existe pas de mutant sans LPS) de la paroi bactérienne des bactéries à Gram négatif : c est une endotoxine. La structure est la suivante : L Ag O est spécifique d une espèce à …   Wikipédia en Français

  • Lipopolysaccharide-binding protein — Lipopolysaccharide binding protein, also known as LBP, is a human gene.cite web | title = Entrez Gene: LBP lipopolysaccharide binding protein| url = Cmd=ShowDetailView TermToSearch=3929| accessdate …   Wikipedia

  • Lipopolysaccharide glucosyltransferase I — In enzymology, a lipopolysaccharide glucosyltransferase I (EC number| is an enzyme that catalyzes the chemical reaction:UDP glucose + lipopolysaccharide ightleftharpoons UDP + D glucosyl lipopolysaccharideThus, the two substrates of this …   Wikipedia

  • Lipopolysaccharide 3-alpha-galactosyltransferase — In enzymology, a lipopolysaccharide 3 alpha galactosyltransferase (EC number| is an enzyme that catalyzes the chemical reaction:UDP galactose + lipopolysaccharide ightleftharpoons UDP + 3 alpha D galactosyl [lipopolysaccharide glucose]… …   Wikipedia

  • Lipopolysaccharide N-acetylglucosaminyltransferase — In enzymology, a lipopolysaccharide N acetylglucosaminyltransferase (EC number| is an enzyme that catalyzes the chemical reaction:UDP N acetyl D glucosamine + lipopolysaccharide ightleftharpoons UDP + N acetyl D… …   Wikipedia

  • Lipopolysaccharide glucosyltransferase II — In enzymology, a lipopolysaccharide glucosyltransferase II (EC number| is a really freaking long term for an enzyme that catalyzes the chemical reaction:UDP glucose + lipopolysaccharide ightleftharpoons UDP + alpha D glucosyl… …   Wikipedia

Share the article and excerpts

Direct link
Do a right-click on the link above
and select “Copy Link”