Taxonomic group: fungi / Ascomycota
(Phylum: Ascomycota)
The structure was elucidated in this paperNCBI PubMed ID: 22981001Publication DOI: 10.1016/j.phytochem.2012.08.010Journal NLM ID: 0151434Publisher: Elsevier
Correspondence: Cordeiro LM <lucimaramcc
ufpr.br>
Institutions: Departamento de Bioquímica e Biologia Molecular, Universidade Federal do Paraná, Curitiba, Brazil
Cultures of the mycobiont Physcia kalbii were obtained from germinated ascospores and cultivated on Sabouraud-Sucrose-agar medium. Alkaline extraction of freeze-dried mycelia provided a branched (1→3),(1→6)-β-glucan and a glucomannan, whose chemical structure was determined by monosaccharide composition, methylation, controlled Smith degradation and NMR spectroscopic analysis. The β-glucan had a (1→3)-linked β-glucopyranosyl backbone, partially substituted (approx. 50% of the units) at O-6. The side chains were formed by 6-O- (~82%) and 2,6-O-linked-β- Glcp units, while the non-reducing ends were formed by β-glucopyranosyl residues. The glucomannan had (1→6)-linked α-Manp units in the main chain, almost all being substituted at O-2 by α-Manp and α-Glcp units. This glucomannan could be a typical polysaccharide of lichens from the family Physciaceae.
polysaccharides, lichen, Glucomannan, Branched β-glucan, mycobiont, Physcia
Structure type: homopolymer
Location inside paper: Fig.3, B, table 2, PK10
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, alkali-soluble β-glucan (PeA3), alkali-soluble polysaccharide (PCAP), callose, laminarin
Compound class: EPS, O-polysaccharide, cell wall polysaccharide, lipophosphoglycan, glycoprotein, LPG, glucan, polysaccharide, glycoside, β-glucan, β3-glucan, cell wall glucan
Contained glycoepitopes: IEDB_1397514,IEDB_142488,IEDB_146664,IEDB_153543,IEDB_158555,IEDB_161166,IEDB_2278476,IEDB_2278477,IEDB_558869,IEDB_857743,IEDB_983931,SB_192
Methods: 13C NMR, 1H NMR, methylation, periodate oxidation, NMR-2D, GC-MS, acid hydrolysis, Smith degradation, HPSEC, extraction, acetylation, reduction, cell growth, ethanol precipitation
Related record ID(s): 44277
NCBI Taxonomy refs (TaxIDs): 663388Reference(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 K
1H NMR data: present in publication
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13C NMR data: present in publication
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There is only one chemically distinct structure:
Found 
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