Comparative studies of lipoteichoic acids from several Bacillus strains.

Abstract:

:Structural studies were carried out on lipoteichoic acids obtained from defatted cells of 10 Bacillus strains by phenol-water partition followed by chromatography on DEAE-Sephacel and Octyl-Sepharose columns. A group of the tested bacteria (group A), Bacillus subtilis, Bacillus licheniformis, and Bacillus pumilus, was shown to have a diacyl form of lipoteichoic acids which contained D-alanine, D-glucose, D-glucosamine, fatty acids, and glycerol in molar ratios to phosphorus of 0.35 to 0.69, 0.07 to 0.15 to 0.43, 0.06 to 0.11, and 0.95 to 1.18, respectively, whereas the other group (group B), Bacillus coagulans and Bacillus megaterium, had diacyl lipoteichoic acids which contained D-galactose, fatty acids, and glycerol in molar ratios to phosphorus of 0.05 to 0.42, 0.06 to 0.12, and 0.96 to 1.07, respectively. After treatment with 47% hydrogen fluoride, the lipoteichoic acids obtained from group A strains commonly gave a hydrophobic fragment, gentiobiosyl-beta (1----1 or 3)diacylglycerol, in addition to dephosphorylated repeating units, glycerol, 2-D-alanylglycerol, N-acetyl-D-glucosaminyl-alpha (1----2)glycerol, and D-alanyl-N-acetyl-D-glucosaminyl-alpha (1----2)glycerol, whereas the lipoteichoic acids from group B strains yielded diacylglycerol in addition to glycerol and D-galactosyl-alpha (1----2)glycerol. The results together with data from Smith degradations indicate that in the lipoteichoic acids of group A strains the polymer chains, made up of partially alanylated glycerol phosphate and glycosylglycerol phosphate units, are joined to the acylglycerol anchors through gentiobiose. However, in the lipoteichoic acids of group B strains, the partially galactosylated poly(glycerolphosphate) chains are believed to be directly linked to the acylglycerol anchors.

journal_name

J Bacteriol

journal_title

Journal of bacteriology

authors

Iwasaki H,Shimada A,Ito E

doi

10.1128/jb.167.2.508-516.1986

subject

Has Abstract

pub_date

1986-08-01 00:00:00

pages

508-16

issue

2

eissn

0021-9193

issn

1098-5530

journal_volume

167

pub_type

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