| Structural elucidation of the repeat unit in highly branched acidic exopolysaccharides produced by nitrogen fixing Burkholderia. | |
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MedLine Citation:
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PMID: 19933228 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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Burkholderia kururiensis, strain M130, an endophytic diazotrophic bacterium isolated from rice roots, produces acetylated acidic exopolysaccharides which can be separated by anion exchange chromatography. These were characterized by nuclear magnetic resonance spectroscopy, methylation analysis and Smith degradation. The exopolysaccharides eluted with 0.5 M NaCl were produced when the bacterium was grown in a medium containing mannitol as the sole carbon source, and showed to be a mixture of two different polymers, composed of hepta or octasaccharide repeat units, consistent with following structure: [structure: see text]. The ability of diazotrophic Burkholderia to produce two exopolysaccharides that differ by the presence of a terminal glucosyl residue provides insight into polysaccharide function with potentially significant biological consequences in the endophytic-host plant interaction. |
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Authors:
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Leticia F Hallack; Daniel S Passos; Katherine A Mattos; Orlando A Agrellos; Christopher Jones; Lucia Mendon?a-Previato; Jose O Previato; Adriane R Todeschini |
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Publication Detail:
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Type: Journal Article; Research Support, Non-U.S. Gov't Date: 2009-11-18 |
Journal Detail:
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Title: Glycobiology Volume: 20 ISSN: 1460-2423 ISO Abbreviation: Glycobiology Publication Date: 2010 Mar |
Date Detail:
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Created Date: 2010-02-03 Completed Date: 2010-06-29 Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 9104124 Medline TA: Glycobiology Country: England |
Other Details:
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Languages: eng Pagination: 338-47 Citation Subset: IM |
Affiliation:
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Instituto de Biof?sica Carlos Chagas Filho, Centro de Ci?ncias da Sa?de, Universidade Federal do Rio de Janeiro, Rio de Janeiro, RJ, Brazil. |
Export Citation:
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| MeSH Terms | |
Descriptor/Qualifier:
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Burkholderia
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metabolism* Carbohydrate Sequence Molecular Sequence Data Nitrogen / metabolism Nitrogen Fixation* Polysaccharides, Bacterial / chemistry*, isolation & purification |
| Chemical | |
Reg. No./Substance:
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0/Polysaccharides, Bacterial; 7727-37-9/Nitrogen |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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