NoteStructural studies of the O-specific side-chain of lipopolysaccharide from Burkholderia gladioli pv. gladioli strain NCPPB 1891
A structure of the repeating unity of the O antigen of Burkholderia gladioli pv. gladioli has been proposed.
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Production, purification, and structural characteristics of extracellular polysaccharides derived from Lactobacillus acidophilus
2022, Journal of the Taiwan Institute of Chemical EngineersCitation Excerpt :The signal of δ 5.31 ppm might be α-linked (1→2) Mannose [51]. The 13C NMR spectrum in Fig. 7b showed that the signals at δ100.5–102.9 ppm were assigned to C-1 of Mannose [52]. Characteristic signals of the ring carbons were appeared in the region between δ 65.4 and 78.7 ppm.
Total synthesis of the proposed structures of gladiosides I and II
2021, Carbohydrate ResearchCitation Excerpt :B20. We believe it is especially important to reinvestigate the exact configuration of the sugar residues in these naturally occurring phenolic glycosides as different strains of B. gladioli (ICMP11096 and NCPPB 1891) [42–44] were shown to produce polysaccharides incorporating rhamnose residues in both l- and d-configurations and in either α- or β-glycosidic linkages. That being said, the anomeric linkage of the xylose residue is confirmed to be 1,2-trans with 3JH1,H2 values of 7.8 and 7.6 Hz for natural gladiosides I and II, respectively.
Occurrence of [→3)-β-D-Manp-(1 → 4)-β-D-Manp-(1→](n) units in the antigenic polysaccharides from Leptospira biflexa serovar patoc strain Patoc I
2000, Carbohydrate ResearchCitation Excerpt :This conclusion was also supported by assignment of the 1H and 13C NMR spectra for AP-2 (Fig. 2). From a comparison of the 13C NMR spectral data reported for mannan and manno-oligosaccharides [19–21], all the anomeric and other signals in the 13C NMR spectra were assigned as shown in Table 3. Complete signal assignment of the 1H NMR spectrum (Table 3) was also carried out in combination with the spectral data of the COSY, HOHAHA (Fig. 3) and HMQC (Fig. 4) techniques.
Stereoselective synthesis of β-mannosides
2008, Carbohydrates in Chemistry and Biology