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J. Bacteriol., 04 1995, 2188-2193, Vol 177, No. 8
P Messner, R Christian, C Neuninger and G Schulz
Previously, the repeating-unit structure of the S-layer glycoprotein from
the eubacterium Bacillus alvei CCM 2051 has been determined to be
[-->3)-beta-D-Galp-(1-->4)-[alpha-D-Glcp-(1-->6)-]-beta-D-ManpNAc-
(1-- >]n (E. Altman, J.-R. Brisson, P. Messner, and U. B. Sleytr,
Biochem. Cell Biol. 69:72-78, 1991). Nuclear magnetic resonance
spectroscopic reexamination of this glycan reveals that the O-antigen-like
domain of the polysaccharide is [see text] connected with the S-layer
polypeptide through the "core" structure
-->3)-alpha-L-Rhap-(1-->3)-alpha-L-Rhap-(1- ->3)-alpha-L-R
hap-(1-->3)-beta-D-Galp-(1-->O)-Tyr. Except for the substitution in
position 4 of the nonreducing rhamnose with the modified glyceric acid
phosphate residue GroA-2-->OPO2-->4-beta-D- ManpNAc-(1-->, this
core is identical to the core of the tyrosine- linked glycan from the
S-layer glycoprotein of Thermoanaerobacter thermohydrosulfuricus L111-69
(K. Bock, J. Schuster-Kolbe, E. Altman, G. Allmaier, B. Stahl, R.
Christian, U. B. Sleytr, and P. Messner, J. Biol. Chem. 269:7137-7144,
1994).
Copyright © 1995, American Society for Microbiology
Similarity of "core" structures in two different glycans of tyrosine- linked eubacterial S-layer glycoproteins
Zentrum fur Ultrastrukturforschung, Universitat fur Bodenkultur, Vienna, Austria.
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