Structure and properties of novel inclusions in Shewanella putrefaciens |
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Authors: | Krause B Beveridge T J Remsen C C Nealson K H |
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Affiliation: | Center for Great Lakes Studies, University of Wisconsin-Milwaukee 53204, USA. |
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Abstract: | Cytoplasmic inclusions surrounded by a bilayer membrane were seen in thin sections. negatively stained and freeze-fractured preparations of Shewanella putrefaciens. Cells harvested from the late exponential and early stationary phase showed a higher number of these vesicles than bacteria isolated from early exponential or late stationary phase. Chemical dyes for polyphosphate or poly-beta-hydroxybutyrate did not stain the material enclosed within these vesicles. Elemental analysis of the material indicated that the content was organic in nature and might be a protein. HPLC analysis of the material showed that it was probably not a carbon source, nor an electron acceptor used by S. putrefaciens. |
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