IntroductionPlant cell wallüStrenghtens the plant body, but has also key roles in plant growth,cell differentiation, intercellulair communication, watermovement and defenceüA complex polysaccharide wall which constitutes theraw material that is used to manufacture textiles, paper, films,thickeners and other productsüPrimary source of cellulose, the most abundant biopolymer on the EarthüInteresting composite materialHow is it made?How is it broken down?
Introduction OutlineüPlant cell wall composition, primary cell wall, secondairycell wallIntermezzo 1: Structure of the main polysaccharides that arepresent in the plant cell wallüHow do plant cells synthesize wall polysaccharides?Biosynthesis of cellulose and matrix polysaccharidesHow is a strong fibrous network assembled?Physico-chemical interactions and enzymatic crosslinkingWhat about wall expansion during cell growth?Enzymes involved in this process
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IntroductionIntermezzo 2: CAZy or carbohydrate active enzymes databaseGlycoside Hydrolases (GH), GlycosylTransferases (GT),Carbohydrate Esterases (CE)Mechanism of GHsIntermezzo 3: Plant cell wall enzymes … tools for the designof new composite materialsExample: xyloglucan endotransglycosylaseüBiodegradation and utilization of lignocelluloseBiomass recalcitrance: Engineering plants and enzymes forbiofuel productionThe path forward for biofuels?