Ultrastructure of Nitrosospira sp. X101 with crystalline outer membrane protein (COMP) |
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| Authors: | Pertti J. Martikainen Eeva-Liisa Nurmiaho-Lassila Kari Lounatmaa |
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| Affiliation: | Department of General Microbiology, University of Helsinki, Helsinki, Finland;Department of Electron Microscopy, University of Helsinki, Helsinki, Finland |
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| Abstract: | Abstract The outer membrane (OM) structure of Nitrosospira sp. X101 was studied by different electron microscopic techniques and SDS-PAGE. A crystalline outer membrane protein was visible in freeze-etched cells, occasionally seen also in the thin sectioned cells, but was difficult to see in a negatively-stained preparation. The lattice probably consists of large globular protein subunits with a hexagonal arrangement. The molecular weights of the major proteins in the cell envelope are 35 kDa, 40 kDa and 42 kDa. |
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| Keywords: | Soil bacterium Nitrosospira Ultrastructure Crystalline outer membrane protein |
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