Formation of a hexagonal lattice structure by an R-form lipopolysaccharide of Klebsiella: comparative study of preparations extracted by the phenol-water and the phenol-chloroform-petroleum ether methods.

Abstract:

: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 +/- 0.3 nm when it was precipitated by addition of two volumes of 10 mM 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 10 mM 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.

journal_name

Microbiol Immunol

authors

Kato N,Ohta M,Kido N,Ito H,Naito S,Kuno T

doi

10.1111/j.1348-0421.1985.tb00895.x

subject

Has Abstract

pub_date

1985-01-01 00:00:00

pages

1051-7

issue

11

eissn

0385-5600

issn

1348-0421

journal_volume

29

pub_type

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