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The chemical reactions and pathways resulting in the breakdown of carbohydrates, any of a group of organic compounds based of the general formula Cx(H2O)y. The chemical reactions and pathways involving polysaccharides, a polymer of more than 20 monosaccharide residues joined by glycosidic linkages. The chemical reactions and pathways involving xylan, a polymer containing a beta-1,4-linked D-xylose backbone. The chemical reactions and pathways resulting in the breakdown of a macromolecule, any molecule of high relative molecular mass, the structure of which essentially comprises the multiple repetition of units derived, actually or conceptually, from molecules of low relative molecular mass. The chemical reactions and pathways resulting in the breakdown of xylan, a polymer containing a beta-1,4-linked D-xylose backbone. The chemical reactions and pathways involving hemicelluloses, plant cell wall polysaccharides that have a backbone of 1,4-linked beta-D-pyranosyl residues in which O4 is in the equatorial orientation. Many different hemicelluloses usually occur intermixed with each molecular type representing different degrees of polymerization and contain many different sugar monomers, which can include glucose, xylose, mannose, galactose, and arabinose. Hemicelluloses also contain most of the D-pentose sugars and occasionally small amounts of L-sugars as well. Xylose is always the sugar monomer present in the largest amount, but mannuronic acid and galacturonic acid also tend to be present. The chemical reactions and pathways performed by an organism resulting in the breakdown of xylan within a second organism, where the two organisms are in a symbiotic interaction. The chemical reactions and pathways resulting in the breakdown of polysaccharides, polymers of more than 10 monosaccharide residues joined by glycosidic linkages.

View Gene Ontology (GO) Term

GO TERM SUMMARY
Name: xylan catabolic process
Acc: GO:0045493
Aspect: Biological Process
Desc: The chemical reactions and pathways resulting in the breakdown of xylan, a polymer containing a beta-1,4-linked D-xylose backbone.
Synonyms:
  • xylan degradation
  • xylan breakdown
  • xylan catabolism
Proteins in PDR annotated with:
   This term: 4 [Search]
   Term or descendants: 4 [Search]


[geneontology.org]
INTERACTIVE GO GRAPH

GO:0045493 - xylan catabolic process (interactive image map)
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