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Structure of the O-polysaccharide of Providencia alcalifaciens O8 containing (2S,4R)-2,4-dihydroxypentanoic acid, a new non-sugar component of bacterial glycans
被引:9
|作者:
Toukach, Filip V.
[1
]
Kocharova, Nina A.
[1
]
Maszewska, Agnieszka
[2
]
Shashlov, Alexander S.
[1
]
Knirel, Yuriy A.
[1
]
Rozalski, Antoni
[2
]
机构:
[1] Russian Acad Sci, ND Zelinsky Inst Organ Chem, Moscow 119991, Russia
[2] Univ Lodz, Inst Microbiol & Immunol, PL-90237 Lodz, Poland
关键词:
Providencia alcalifaciens;
Lipopolysaccharide;
O-Antigen;
Bacterial polysaccharide structure;
2,4-Dihydroxypentanoic acid;
D O I:
10.1016/j.carres.2008.08.011
中图分类号:
Q5 [生物化学];
Q7 [分子生物学];
学科分类号:
071010 ;
081704 ;
摘要:
A glycerol teichoic acid-like O-polysaccharide was obtained by mild acid degradation of the lipopolysaccharide of Providencia alcalifaciens O8 and studied by chemical methods and NMR spectroscopy, including 2D ROESY, [H-1,C-13) HSQC, and HMQC-TOCSY experiments. It was found that the compound contains a new component of bacterial lipopolysaccharides: ether-linked (2S,4R)-2,4-dihydroxypentanoic acid (Dhpa), which was identified by NMR spectroscopy. The following structure of the repeating unit of the polysaccharide was established: [GRAPHICS] (c) 2008 Elsevier Ltd. All rights reserved.
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页码:2706 / 2711
页数:6
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