Xyloglucan-cellulose interaction depends on the sidechains and molecular weight of xyloglucan
Copyright 2004 Elsevier SAS
| Publié dans: | Plant physiology and biochemistry : PPB. - 1991. - 42(2004), 5 vom: 10. Mai, Seite 389-94 |
|---|---|
| Auteur principal: | |
| Autres auteurs: | , |
| Format: | Article |
| Langue: | English |
| Publié: |
2004
|
| Accès à la collection: | Plant physiology and biochemistry : PPB |
| Sujets: | Journal Article Research Support, Non-U.S. Gov't Alcohols Glucans Polymers Xylans xyloglucan 37294-28-3 Cellulose 9004-34-6 |
| Résumé: | Copyright 2004 Elsevier SAS Recent papers have brought evidence against the hypothesis that the fucosyl branching of primary wall xyloglucans (Xg) are responsible for their higher capacity of binding to cellulose. Reinforcement of this questioning has been obtained in this work where we show that the binding capacity was improved when the molecular weight (MW) of the Xg polymers is decreased by enzymatic hydrolysis. Moreover, the enthalpy changes associated with the adsorption process between Xg and cellulose is similar for Xgs with similar MW (but differing in the fine structure such as the presence/absence of fucose). On the basis of these results, we suggest that the fine structure and MW of Xg determines the energy and amount of binding to cellulose, respectively. Thus, the occurrence of different fine structural domains of Xg (e.g. the presence of fucose and the distribution of galactoses) might have several different functions in the wall. Besides the structural function in primary wall, these results might have impact on the packing features of storage Xg in seed cotyledons, since the MW and absence of fucose could also be associated with the self-association capacity |
|---|---|
| Description: | Date Completed 26.08.2004 Date Revised 30.09.2020 published: Print Citation Status MEDLINE |
| ISSN: | 0981-9428 |