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Structural determin...
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Jonsson, K. Hanna M.Stockholms universitet,Institutionen för organisk kemi
(författare)
Structural determination of the O-antigenic polysaccharide from Escherichia coli O74
- Artikel/kapitelEngelska2009
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Elsevier Ltd.2009
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LIBRIS-ID:oai:DiVA.org:su-29260
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https://urn.kb.se/resolve?urn=urn:nbn:se:su:diva-29260URI
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https://doi.org/10.1016/j.carres.2009.03.023DOI
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http://kipublications.ki.se/Default.aspx?queryparsed=id:119330329URI
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Språk:engelska
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Sammanfattning på:engelska
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Ämneskategori:art swepub-publicationtype
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The structure of the O-antigen polysaccharide (PS) from Escherichia coli O74 has been determined. Component analysis, together with 1H and 13C NMR spectroscopy as well as 1H,15N-HSQC experiments were employed to elucidate the structure. Inter-residue correlations were determined by 1H,1H-NOESY and 1H,13C-heteronuclear multiple-bond correlation experiments. The PS is composed of tetrasaccharide repeating units with the following structure: Full-size image (5K) Cross-peaks of low intensity from an α-linked N-acetylglucosamine residue were present in the NMR spectra, and spectral analysis indicates that they originate from the penultimate residue in the polysaccharide. Consequently, the biological repeating unit has a 3-substituted N-acetyl-d-glucosamine residue at its reducing end. The 1H, 13C and 15N NMR chemical shifts of the α- and β-anomeric forms of d-Fucp3NAc are also reported. The repeating unit of the E. coli O74 O-antigen is identical to that of the capsular polysaccharide from E. coli K45.
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Weintraub, AndrejKarolinska Institutet
(författare)
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Widmalm, GöranStockholms universitet,Institutionen för organisk kemi(Swepub:su)gw
(författare)
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Stockholms universitetInstitutionen för organisk kemi
(creator_code:org_t)
Sammanhörande titlar
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Ingår i:Carbohydrate Research: Elsevier Ltd.344:12, s. 1592-15950008-62151873-426X
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