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Carbohydr Res. 1997 Jun 11;301(1-2):33-40.

Structure of the 13C-enriched O-deacetylated glucuronoxylomannan of Cryptococcus neoformans serotype A determined by NMR spectroscopy.

Author information

1
Department of Chemistry (LBCS), Georgia State University, Atlanta 30303-3083, USA.

Abstract

The complete assignment of 1H and 13C chemical shifts for 99% uniformly 13C-labeled O-deacetylated glucuronoxylomannan (GXM) of Cryptococcus neoformans serotype A isolate 9759-Mu-1 was accomplished by the analysis of HCCH-TOCSY and HCCH-COSY spectra. The sequence of the glycosyl residues was determined by a GHMBC experiment using 20% uniformly 13C-labeled GXM; GXM was prepared by a novel procedure that insured the virtual exclusion of adjacent 13C-labeled carbon atoms. For each residue in the GXM of 9759-Mu-1 we determined its linkage position, its anomeric configuration, and its position in the repeating sequence as follows: [sequence: see text].

PMID:
9228737
DOI:
10.1016/s0008-6215(97)00084-0
[Indexed for MEDLINE]

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