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1. (Article ID: 6635)
Jiménez-Barbero J, Bernabé M, Leal JA, Prieto A, Gomez-Miranda B
Chemical structure and conformational features of cell-wall polysaccharides isolated from Aphanoascus mephitalus and related species
Carbohydrate Research 250 (1993)
289-299
The structures of cell-wall mannans isolated from Aphanoascus mephitalus, A. fulvescens, A. verrucosus, and A. reticulisporus have been investigated by chemical analyses and 1D and 2D 1H and 13C NMR techniques. It was found that all of them consists of a relatively simple comb-like structure of the disaccharide repeating block [→6)-[α-Manp-(1→2)]-α-Manp-(1→]. The conformations around the α-(1→2) and α-(1→6) linkages in these kinds of polymers were also studied by using molecular mechanics and dynamics calculations, together with NOE data. The results are similar to those found within the oligosaccharide chains of glycoproteins, with a well-defined conformation for the α-(1→2) linkage and a certain restriction around the α-(1→6) bonding imposed by the 2-substitution.
NCBI PubMed ID: 8131160Journal NLM ID: 0043535Publisher: Elsevier
Institutions: Instituto de Química Orgánica, CSIC, Madrid, Spain
Methods: 13C NMR, 1H NMR, molecular mechanics, molecular dynamics
The publication contains the following compound(s):
- Compound ID: 8706
Structure type: polymer chemical repeating unit
Trivial name: mannan, neutral mannan, BCG-PSN (Bacillus Calmette-Guérin polysaccharide and nucleic acid), α-mannan
Compound class: cell wall polysaccharide
Reference(s) to other database(s): GTC:G75213RY, GlycomeDB:
16270, CCSD:
4940, CBank-STR:4613
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