Abstract
Phosphonate analogue 5 of the lipid A precursor 4 has been prepared from phosphonate 2 and nucleotide 3 with the help of lipid A synthase, isolated from the overproducing Escherichia coli mutant MC 1061 (delta 2512) or JB1104 (delta 2514). The biological properties of phosphonate 5 and phosphate 4 are quite similar to each other as compared in the limulus amoebocyte lysate assay, by the activation of the RAW264 murine macrophagelike cell line (determined by stimulation of ornithine decarboxylase), and by the pyrogenicity in rabbits. Hydrolytic removal of the 1-phosphate group of 4 is thus not a prerequisite for its biological activity.
MeSH terms
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Animals
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Body Temperature / drug effects
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Escherichia coli / enzymology
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Hexosyltransferases / metabolism*
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Limulus Test
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Lipid A / analogs & derivatives*
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Lipid A / chemical synthesis
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Lipid A / pharmacology
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Macrophage Activation / drug effects
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Macrophages / drug effects
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Macrophages / physiology
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Mice
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Molecular Structure
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N-Acetylglucosaminyltransferases*
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Organophosphorus Compounds / chemical synthesis*
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Organophosphorus Compounds / pharmacology
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Ornithine Decarboxylase / metabolism
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Protein Precursors* / chemistry
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Rabbits
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Tumor Cells, Cultured
Substances
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Lipid A
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Organophosphorus Compounds
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Protein Precursors
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6-O-(2-deoxy-3-O-(3-hydroxytetradecanoyl)-2-((3-hydroxytetradecanoyl)amino)-glycopyranosyl)-2-deoxy-3-O-(3-hydroxytetradecanoyl)-2-((3-hydroxytetradecanoyl)amino)-glucopyranosylphosphonate
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Hexosyltransferases
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N-Acetylglucosaminyltransferases
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lipid A disaccharide synthase
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Ornithine Decarboxylase