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1. (Article ID: 1590)
 
Zych K, Perepelov AV, Baranowska A, Zablotni A, Knirel YA, Sidorczyk Z
Structure and serological studies of the O-polysaccharide of Proteus penneri 75. Epitopes and subgroups of Proteus serogroup O73
FEMS Immunology and Medical Microbiology 43(2) (2005) 141-148
 

The O-specific polysaccharide of the lipopolysaccharide of Proteus penneri strain 75 consists of tetrasaccharide-ribitol phosphate repeating units and resembles ribitol teichoic acids of Gram-positive bacteria. The following structure of the polysaccharide was elucidated by chemical methods and 1H and 13C NMR spectroscopy: [structure in text] where Rib-ol is ribitol. Serological studies with polyclonal antisera showed that the same structure of the O-polysaccharide occurred in two strains: P. penneri 75 and 128. A similar structure has been established earlier for the O-polysaccharide of P. penneri 103 [Drzewiecka, D., et al., Carbohydr. Res. 337 (2002) 1535-1540]. On the basis of complex serological investigations with use of two polyclonal P. penneri 75 and 103 O-antisera, five strains could be classified into Proteus O73 serogroup: P. penneri 48, 75, 90, 103 and 128, two of which (P. penneri 75 and 128) should be subdivided into subgroup 73a, 73b and three others (P. penneri 48, 90 and 103) into subgroup 73a, 73c. Epitopes responsible for the cross-reactivity of P. penneri O73 strains and a related strain of P. mirabilis O20 were tentatively defined.

structure, epitope, epitopes, O-polysaccharide, O polysaccharide, Proteus, serological, serogroup, Proteus penneri

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