Effects of Detergents on Lysis of Micrococcus lysodeikticus by Lysozyme
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概要
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The effects of detergents on the lysozyme-catalyzed hydrolysis of Micrococcus lysodeikticus cells were investigated by changing the concentration of Na-phosphate buffer and pH in the presence or absence of sucrose. Also, a parallel study of the hydrolysis of glycolchitin by lysozyme was conducted and compared to the lytic reaction. Electron microscopy was utilized to follow the changes in cell morphology during the various treatments. None of the detergents changed turbidity of the cell suspension. However, they did affect the change in turbidity during lysis in unique ways. SDS, which is an anionic detergent, inhibited lysozyme activity and its addition to the reaction mixture caused a rapid and large decrease in the turbidity. Brij 35 and Triton X-100, which are non-ionic detergents, did not inhibit lysozyme activity, but their presence in the reaction mixture changed the rate of turbidity change. Apparently non-ionic detergents disrupt only the protoplast, while anionic detergents disrupt both the protoplast and the damaged cell. The lytic mechanism of M. lysodeikticus by lysozyme was discussed in detail.
著者
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Imoto Taiji
Faculty Of Biotechnology And Life Science Sojo University
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Ide Akio
Laboratory Of Biochemistry Faculty Of Agriculture Yamaguchi University
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Koga Daizo
Laboratory Of Biochemistry Department Of Biological Science Faculty Of Agriculture Yamaguchi Univers
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TANAKA Shuhei
Laboratory of Plant Pathology, Faculty of Agriculture, Yamaguchi University
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YAGISHITA Kazuyoshi
Laboratory of Biochemistry, Faculty of Agriculture, Yamaguchi University
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