The structures and biological activities of the lipo-oligosaccharide nodulation signals produced by type I and II strains of Bradyrhizobium japonicum
| Autor: | J. Sanjuan, Herman P. Spaink, G Stacey, N. K. Peters, John Glushka, A. A. N. Van Brussel, Russell W. Carlson, André H. M. Wijfjes, U R Bhat, T. J. W. Stokkermans |
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| Jazyk: | angličtina |
| Rok vydání: | 1993 |
| Předmět: |
biology
Stereochemistry food and beverages Cell Biology Nuclear magnetic resonance spectroscopy Root hair biology.organism_classification Biochemistry chemistry.chemical_compound Glycolipid Chitin chemistry Tetrasaccharide Carbohydrate conformation Glycine soja Molecular Biology Bradyrhizobium japonicum |
| Zdroj: | Scopus-Elsevier Journal of Biological Chemistry, 268(24), 18372-18381 Journal of Biological Chemistry |
| Popis: | Bradyrhizobium japonicum produces lipo-oligosaccharide signal molecules that induce deformation of root hairs and meristematic activity on soybeans. B. japonicum USDA135 (a Type I strain) produces modified chitin pentasaccharide molecules with either a terminal N-C16:0- or N-C18:1-glucosamine with and without an O-acetyl group at C-6 and with 2-O-methylfucose linked to C-6 of the reducing N-acetylglucosamine. An additional molecule has N-C16:1-glucosamine and no O-acetyl group. All of these molecules cause root hair deformation on Vicia sativa and Glycine soja. The C18:1-containing molecules were tested and found to induce meristem formation on G. soja. USDA61 (a Type II strain) produces eight additional molecules. Five have a carbamoyl group on the terminal N-acylglucosamine. Six have chitin tetrasaccharide backbones. Three have a terminal N-acyl-N-methylglucosaminosyl residue. In four molecules, the reducing-end N-acetylglucosamine is glycosidically linked to glycerol and has a branching fucosyl, rather than a 2-O-methylfucosyl, residue. One molecule has a terminal N-acylglucosamine that has both acetyl and carbamoyl groups (one each). |
| Databáze: | OpenAIRE |
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