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Taxonomic group: fungi / Basidiomycota (Phylum: Basidiomycota)
Organ / tissue: fruiting body

Publication DOI: 10.1080/07328309508002068
Journal NLM ID: 8218151
Publisher: Marcel Dekker
Institutions: Konan Women's University, Kobe, Japan, Department of Materials Science, Miyazaki University, Miyazaki, Japan, Research Institute for Advanced Science and Technology, University of Osaka Prefecture, Sakai, Japan, Osaka City University, Osaka, Japan

A possible chain conformation of the acidic heteropolysaccharide isolated from the fruit body of Tremella fuciformis Berk (Shirokikurage) was proposed by the X-ray diffraction study combined with the computational model building technique. The polysaccharide consists of a linear backbone of 1,3-linked α-D-mannose which is highly substituted with β-D-xylose, β-D-glucuronic acid, and 1,2-linked β-D-xylobiose units at the C2 position of the mannose residue. It was suggested from the X-ray data, together with the knowledge of the chain conformations proposed for other 1,3-linked α-D-glycans, that the backbone conformation has the left-handed, three-fold helical symmetry. Orientations of the side group residues on the mannan backbone were suggested from the theoretical calculations. The proposed conformation of a repeating unit of the helical model consisted of six mannose residues and three side group residues in the 2.42 nm distance along the fiber axis. Two interresidue hydrogen bonds were observed over each 1,2-linkage between the mannose residue and the side group residue, while no hydrogen bond was observed over the backbone linkage.

conformation, X-ray diffraction, Glucuronoxylomannan, Tremella fuciformis

Structure type: structural motif or average structure
Location inside paper: Fig.1
Compound class: O-polysaccharide, glucuronoxylomannan
Contained glycoepitopes: IEDB_114701,IEDB_115136,IEDB_115576,IEDB_130701,IEDB_140116,IEDB_140630,IEDB_144983,IEDB_145668,IEDB_152206,IEDB_164174,IEDB_167188,IEDB_174332,IEDB_423153,IEDB_76933,IEDB_983930,SB_197,SB_44,SB_67,SB_72

Methods: X-ray, conformation analysis, crystallography, extraction, force field
3D data: conformation data

Related record ID(s): 43957, 43958, 43959, 43970, 44000
NCBI Taxonomy refs (TaxIDs): 64657
Reference(s) to other database(s): GTC:G46422UL
Show glycosyltransferases

There is only one chemically distinct structure:

[*]O[C@H]1[C@H](O)[C@@H](CO)O[C@H](O[C@@H]2[C@H](O[C@@H]3O[C@H](C(=O)O)[C@@H](O)[C@H](O)[C@H]3O)[C@@H](O[C@@H]3[C@H](O)[C@@H](O[C@@H]4[C@H](O[C@@H]5O[C@H](C(=O)O)[C@@H](O)[C@H](O)[C@H]5O)[C@@H](O[C@@H]5[C@H](O)[C@@H](O[C@@H]6[C@H](O[C@@H]7OC[C@@H](O)[C@H](O)[C@H]7O)[C@@H](O[C@@H]7[C@H](O)[C@@H](O[C@@H]8[C@H](O[C@@H]9O[C@H](C(=O)O)[C@@H](O)[C@H](O)[C@H]9O)[C@@H](O[C@@H]9[C@H](O)[C@@H]([*])O[C@H](CO)[C@H]9O)O[C@H](CO)[C@H]8O)O[C@H](CO)[C@H]7O)O[C@H](CO)[C@H]6O)O[C@H](CO)[C@H]5O)O[C@H](CO)[C@H]4O)O[C@H](CO)[C@H]3O)O[C@H](CO)[C@H]2O)[C@H]1O[C@@H]1OC[C@@H](O)[C@H](O)[C@H]1O[C@@H]1OC[C@@H](O)[C@H](O)[C@H]1O

SVG MW SMILES 3D mol Ionize