A polysaccharide found in plant cell walls that hydrolyzes to xylose.
- Among plant cell wall hemicellulose components, arabinoxylans and xylans are widely distributed.
- Individual cells are also supplied with cell walls, usually of cellulose or xylan (another polysaccharide) fibers.
- In the PCW, uronic acid residues are found as constituents of xylans, pectins, glucuronomannans and arabinogalactan-proteins.
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