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| Content Provider | World Health Organization (WHO)-Global Index Medicus |
|---|---|
| Author | Cao, Yanlu Smith, C. Jeffrey Rocha, Edson R. |
| Description | Author Affiliation: Cao Y ( Department of Microbiology and Immunology, Brody School of Medicine, East Carolina University, Greenville, NC 27834.); Rocha ER ( Department of Microbiology and Immunology, Brody School of Medicine, East Carolina University, Greenville, NC 27834.); Smith CJ ( Department of Microbiology and Immunology, Brody School of Medicine, East Carolina University, Greenville, NC 27834 smithcha@ecu.edu.); |
| Abstract | Bacteroides fragilis is the most common anaerobe isolated from clinical infections, and in this report we demonstrate a characteristic of the species that is critical to their success as an opportunistic pathogen. Among the Bacteroides spp. in the gut, B. fragilis has the unique ability of efficiently harvesting complex N-linked glycans from the glycoproteins common to serum and serous fluid. This activity is mediated by an outer membrane protein complex designated as Don. Using the abundant serum glycoprotein transferrin as a model, it has been shown that B. fragilis alone can rapidly and efficiently deglycosylate this protein in vitro and that transferrin glycans can provide the sole source of carbon and energy for growth in defined media. We then showed that transferrin deglycosylation occurs in vivo when B. fragilis is propagated in the rat tissue cage model of extraintestinal growth, and that this ability provides a competitive advantage in vivo over strains lacking the don locus. |
| ISSN | 00278424 |
| e-ISSN | 10916490 |
| Journal | Proceedings of the National Academy of Sciences of the United States of America |
| Issue Number | 35 |
| Volume Number | 111 |
| Language | English |
| Publisher | National Academy of Sciences |
| Publisher Date | 2014-09-01 |
| Publisher Place | United States |
| Access Restriction | Open |
| Subject Keyword | Bacteroides Infections Metabolism Microbiology Bacteroides Fragilis Polysaccharides Abscess Anaerobiosis Animals Bacterial Proteins Genetics Growth & Development Body Fluids Culture Media Diffusion Chambers, Culture Disease Models, Animal Glucose Glycoproteins Blood Glycosylation Microbiota Phylogeny Swine Transferrin Research Support, N.I.H., Extramural Multidisciplinary |
| Content Type | Text |
| Resource Type | Article |
| Subject | Multidisciplinary |
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