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Regular Array in the Cell Wall of Lactobacillus fermenti as Revealed by Freeze-Etching and Negative Staining1
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- KAWATA Tomio
- Department of Food Microbiology and Central Laboratory of Electron Microscopy, Tokushima University School of Medicine
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- MASUDA Kuniyoshi
- Department of Food Microbiology and Central Laboratory of Electron Microscopy, Tokushima University School of Medicine
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- YOSHINO Kazuhiro
- Department of Food Microbiology and Central Laboratory of Electron Microscopy, Tokushima University School of Medicine
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- FUJIMOTO Michimasa
- Department of Food Microbiology and Central Laboratory of Electron Microscopy, Tokushima University School of Medicine
Bibliographic Information
- Other Title
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- Regular Array in the Cell Wall of <i>Lactobacillus fermenti</i> as Revealed by Freeze‐Etching and Negative Staining1
- Regular array in the cell wall of Lactobacillus fermenti as revealed by freeze-etching and negative staining
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Description
Freeze-etching of Lactobacillus fermenti F-4 (NCTC 7230) revealed that the outer layer of the cell wall was composed of a regular array in which parallel lines ran obliquely to the longitudinal axis of the cell with an average distance between the centers of about 9.6 nm and were intersected by thinner lines with an average periodicity of approximately 6.2 nm at an angle of about 75°. Occasionally the direction of the striation was discontinuously shifted near one end of the cell, Beneath the regular array the middle cell wall layer packed with granules and the smooth inner cell wall layer were discernible and the mesosomes were also visible in the cytoplasm. When the ultrastructure of isolated outer cell wall fragments was examined by negative staining, the regular array appeared to be composed of subunits, about 3.6 nm in diameter, which were arranged in a tetragonal pattern. The tetragonal array consisted of the subunits in rows in two directions at an angle of about 75° to each other. The average spacing between the rows was about 9.3 nm in one direction and 5.5 nm in the other direction.
Journal
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- Japanese Journal of Microbiology
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Japanese Journal of Microbiology 18 (6), 469-476, 1974
Center For Academic Publications Japan
