Complete genome sequence of the complex carbohydrate-degrading marine bacterium, Saccharophagus degradans strain 2-40 T |
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Authors: | Weiner Ronald M Taylor Larry E Henrissat Bernard Hauser Loren Land Miriam Coutinho Pedro M Rancurel Corinne Saunders Elizabeth H Longmire Atkinson G Zhang Haitao Bayer Edward A Gilbert Harry J Larimer Frank Zhulin Igor B Ekborg Nathan A Lamed Raphael Richardson Paul M Borovok Ilya Hutcheson Steven |
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Institution: | Department of Cell Biology and Molecular Genetics, University of Maryland, College Park, Maryland, USA. RWeiner@umd.edu |
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Abstract: | The marine bacterium Saccharophagus degradans strain 2-40 (Sde 2-40) is emerging as a vanguard of a recently discovered group of marine and estuarine bacteria that recycles complex polysaccharides. We report its complete genome sequence, analysis of which identifies an unusually large number of enzymes that degrade >10 complex polysaccharides. Not only is this an extraordinary range of catabolic capability, many of the enzymes exhibit unusual architecture including novel combinations of catalytic and substrate-binding modules. We hypothesize that many of these features are adaptations that facilitate depolymerization of complex polysaccharides in the marine environment. This is the first sequenced genome of a marine bacterium that can degrade plant cell walls, an important component of the carbon cycle that is not well-characterized in the marine environment. |
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