Taxonomic group: fungi / Ascomycota
(Phylum: Ascomycota)
The structure was elucidated in this paperPublication DOI: 10.1248/cpb.54.882Journal NLM ID: 8307156Publisher: Elsevier
Correspondence: Iacomini M <iacomini
ufpr.br>
Institutions: Departamento de Bioquímica e Biologia Molecular, Universidade Federal do Paraná,Curitiba-PR, Brazil, Istituto di Ricerche Chimiche e Biochimiche ‘G. Ronzoni’, Milan, Italy, Botanical Museum, Helsinki University, Finland
The three main polysaccharides from the lichenized fungus Umbilicaria mammulata were isolated and characterized. Their structures were determined using GC-MS of derived alditol acetates, GC-MS-methylation analysis and 13C NMR spectroscopy. Two of them were (1→3)-and (1→6)-linked β-glucans, namely laminaran and pustulan, respectively. The other was a galactofuranomannan, which was analyzed as well as a galactose-free polysaccharide formed on partial hydrolysis. The former consisted of a main chain of (1→6)-linked α-mannopyranosyl residues, part of them being substituted at O-2, O-4, and O-2,4 by complex, branched side chains containing α-mannopyranosyl and β-galactofuranosyl units. This heteropolysaccharide is related to those of other Umbilicariaceae, and its chemical characterization presents a useful tool for the systematics of lichenized fungi.
chemotaxonomy, lichen, Umbilicaria mammulata, Galactofuranomannan, Laminaran, Pustulan
Structure type: homopolymer
Location inside paper: abstract, p. 16
Trivial name: glucan, β-1,3-glucan, curdlan, curdlan-type polysaccharide 13140, paramylon, curdlan, laminarin, β-glucan, curdlan, β-(1,3)-glucan, β-(1,3)-glucan, curdlan, curdlan, β-1,3-glucan, paramylon, reserve polysaccharide, b-glucan, β-1,3-D-glucan, laminaran, botryosphaeran, laminaran type β-D-glucan, latiglucan I, pachymaran, Curdlan, zymosan A, β-glucan, curdlan, laminarin, zymosan, zymosan, glucan particles, zymosan, β-(1-3)-glucan, β-(1,3)-glucan, β-(1,3)glucan, pachymaran, D-glucan (DPn)540, pachyman, laminaran, curdlan, zymosan, zymosan, β-(1,3)-glucan, zymosan A, zymosan, β-1,3-glucan, curdlan, β-1,3-glucan, curdlan, β-1,3-glucan, curdlan, pachyman, β-(1,3)-glucan, curdlan, callose, a water-insoluble β-(1→3)-glucan, fermentum β-polysaccharide, water-insoluble glucan, callose, laminarin, alkali-soluble β-glucan (PeA3), alkali-soluble polysaccharide (PCAP)
Compound class: EPS, O-polysaccharide, cell wall polysaccharide, lipophosphoglycan, glycoprotein, LPG, glucan, cell wall glucan, polysaccharide, glycoside, β-glucan, β-1, 3-glucan
Contained glycoepitopes: IEDB_1397514,IEDB_142488,IEDB_146664,IEDB_153543,IEDB_158555,IEDB_161166,IEDB_558869,IEDB_857743,IEDB_983931,SB_192
Methods: 13C NMR, NMR-2D, methylation, partial acid hydrolysis, GC-MS, sugar analysis, acid hydrolysis, extraction, SEC
Related record ID(s): 42226
NCBI Taxonomy refs (TaxIDs): 161685Reference(s) to other database(s): GTC:G51056AN, GlycomeDB:
157, CCSD:
50049, CBank-STR:4225, CA-RN: 51052-65-4, GenDB:FJ3380871.1
Show glycosyltransferases
NMR conditions: in DMSO-d6 at 323(C) K
[as TSV]
13C NMR data:
Linkage Residue C1 C2 C3 C4 C5 C6
bDGlcp 102.8 72.7 86.0 68.3 76.2 60.7
1H NMR data:
missing...
13C NMR data:
| Linkage | Residue | C1 | C2 | C3 | C4 | C5 | C6 |
|---|
| | bDGlcp | 102.8 | 72.7 | 86.0 | 68.3 | 76.2 | 60.7 |
|
There is only one chemically distinct structure:
Found 
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