Formation of a Hexagonal Lattice Structure by an R-Form Lipopolysaccharide of Klebsiella
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An R-form lipopolysaccharide (LPS) extracted from Klebsiella strain LEN-111 (O3-:K1-) by the phenol-chloroform-petroleum ether method was compared with that extracted by the phenol-water method in the ability to form a hexagonal assembly. The LPS which was extracted by the phenol-water method and dialyzed against tap water to remove phenol showed ribbon-like structures, and it formed a hexagonal lattice structure with a lattice constant of 14.5±0.3nm when it was precipitated by addition of two volumes of 10mM MgCl2-ethanol. The LPS which was extracted by the phenol-chloroform-petroleum ether method and lyophilized consisted of ribbon-like structures and their fragments and it often formed small pieces of a hexagonal lattice, although the LPS before lyophilization did not form such a lattice. When the LPS extracted by the phenol-chloroform-petroleum ether method was precipitated by addition of two volumes of 10mM MgCl2-ethanol, it formed essentially the same hexagonal lattice structure as that formed by the LPS extracted by the phenol-water method. From these results it is concluded that the ability of the LPS to form a hexagonal lattice structure does not depend upon the method of its extraction from bacterial cells.
- 微生物学・免疫学学会連合の論文
微生物学・免疫学学会連合 | 論文
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