Meaning of xylan acetylation on xylan-cellulose interactions: A quartz crystal microbalance with dissipation (QCM-D) and molecular dynamic study
| Autor: | Jacqueline Vigouroux, Céline Moreau, Bernard Cathala, Sophie Le Gall, Zahraa Jaafar, Nadège Beury, Alexandre Boissière, Ana Villares, Marc Lahaye, Karim Mazeau |
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| Přispěvatelé: | Unité de recherche sur les Biopolymères, Interactions Assemblages (BIA), Institut National de la Recherche Agronomique (INRA), Centre de Recherches sur les Macromolécules Végétales (CERMAV ), Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS)-Université Grenoble Alpes [2016-2019] (UGA [2016-2019]), Centre de Recherches sur les Macromolécules Végétales (CERMAV), Université Joseph Fourier - Grenoble 1 (UJF)-Centre National de la Recherche Scientifique (CNRS)-Université Grenoble Alpes (UGA), Dynamique du protéome et biogenèse du chloroplaste (ChloroGenesis), Physiologie cellulaire et végétale (LPCV), Institut National de la Recherche Agronomique (INRA)-Centre National de la Recherche Scientifique (CNRS)-Université Grenoble Alpes (UGA)-Institut de Recherche Interdisciplinaire de Grenoble (IRIG), Direction de Recherche Fondamentale (CEA) (DRF (CEA)), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Direction de Recherche Fondamentale (CEA) (DRF (CEA)), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut National de la Recherche Agronomique (INRA)-Centre National de la Recherche Scientifique (CNRS)-Université Grenoble Alpes (UGA)-Institut de Recherche Interdisciplinaire de Grenoble (IRIG), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA) |
| Jazyk: | angličtina |
| Rok vydání: | 2019 |
| Předmět: |
animal structures
Polymers and Plastics 02 engineering and technology macromolecular substances 010402 general chemistry 01 natural sciences xylan Cell wall Turn (biochemistry) chemistry.chemical_compound Polymer chemistry acetyl group Materials Chemistry Hemicellulose Cellulose cellulose nanocrystal ComputingMilieux_MISCELLANEOUS Chemistry Organic Chemistry technology industry and agriculture food and beverages Quartz crystal microbalance hemicellulose [CHIM.MATE]Chemical Sciences/Material chemistry 021001 nanoscience & nanotechnology Xylan molecular dynamics 0104 chemical sciences Xylan acetylation carbohydrates (lipids) [CHIM.POLY]Chemical Sciences/Polymers Acetylation quartz crystal microbalance with dissipation (qcm-d) 0210 nano-technology |
| Zdroj: | Carbohydrate Polymers Carbohydrate Polymers, Elsevier, 2019, 226, pp.115315. ⟨10.1016/j.carbpol.2019.115315⟩ |
| ISSN: | 0144-8617 |
| DOI: | 10.1016/j.carbpol.2019.115315⟩ |
| Popis: | International audience; In plant cell walls, xylan chains present various substituents including acetate groups. The influence of the acetyl substitution on the organization of xylan-cellulose complexes remains poorly understood. This work combines in vitro and in silico approaches to decipher the functional role of acetyl groups on the xylan/cellulose interaction. Acetylated xylans were extracted from apple pomace with dimethyl sulfoxide-lithium chloride (DMSO-LiCl) and deacetylated using a mild alkali treatment. The adsorption behavior of acetylated and deacetylated xylan fractions was investigated using quartz crystal microbalance with dissipation (QCM-D) and molecular dynamics. Acetylated xylans form a dense and poorly hydrated and rigid layer on cellulose with xylan chains that have two residues per helical turn conformation, whereas the deacetylated fraction forms a swollen and more viscous layer in which only the xylan chains in direct contact with the cellulose surface have two residues per helical turn conformation. The other chains have three residues per turn conformation. |
| Databáze: | OpenAIRE |
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