Taxonomic group: plant / Streptophyta
(Phylum: Streptophyta)
Publication DOI: 10.1016/0008-6215(94)00238-XJournal NLM ID: 0043535Publisher: Elsevier
Institutions: Centre de Recherches sur les Macromolécules Végétales, CNRS, Grenoble, France, Physical Chemistry 1, Lund University, Chemical Center, Lund, Sweden, Laboratoire de Physico-Chimie des Macromolécules, INRA, Nantes, France, Laboratoire de Spectrométrie Physique Université Joseph Fourier, Saint Martin d Hères, France, Polymer and Colloid Chemistry Group, The North East Wales Institute, Connah's Quay Deeside, Clwyd, United Kingdom
NMR chemical shifts and line-widths of 133Cs ions were measured in kappa-carrageenan gels containing galacto-or gluco-mannans, and compared with measurements on kappa-carrageenan alone. In the mixed gels, as in pure kappa-carrageenan, large changes in the NMR parameters were found to accompany the onset of helix formation for kappa-carrageenan, as obtained independently from polarimetry or differential scanning calorimetry. The shift changes on helix formation in the mixed gels were very similar to those in kappa-carrageenan alone, indicating that the ordered conformation of kappa-carrageenan, and its degree of specific ion binding, was the same in all systems. A much enhanced line-broadening was seen in gels containing carob galactomannan or konjac glucomannan, which are known to form synergistic gels in the mixtures with kappa- carrageenan, while other additives (guar galactomannan or agarose) had a small or insignificant effect. The observations are interpreted in terms of an association between mannans and (aggregated) kappa-carrageenan helices in the synergistic gel mixtures.
Galactomannan, polysaccharide interactions, kKappa-carrageenan, glucomannan; 133Cs NMR
Structure type: polymer chemical repeating unit
Contained glycoepitopes: IEDB_136906,IEDB_137472,IEDB_137485,IEDB_140116,IEDB_141794,IEDB_144983,IEDB_151528,IEDB_152206,IEDB_190606,IEDB_76920,IEDB_983930,SB_44,SB_7,SB_72
Methods: 133Cs-NMR
Comments, role: Parent molecule: carob galactomannan; Galp:Manp ratio 23:77, Galp branch is irregular
NCBI Taxonomy refs (TaxIDs): 20340Reference(s) to other database(s): GTC:G45154HY, CCSD:
36089, CBank-STR:8991
Show glycosyltransferases
There is only one chemically distinct structure:
Found 
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