Metabolic Modeling Tutorial
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Metabolic Modeling Tutorial
discounted EARLY registration ends Dec 31, 2014
Metabolic Modeling Tutorial
discounted EARLY registration ends Dec 31, 2014
Metabolic Modeling Tutorial
discounted EARLY registration ends Dec 31, 2014
Metabolic Modeling Tutorial
discounted EARLY registration ends Dec 31, 2014
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MetaCyc Compound Class: a xylogalacturonan

Superclasses: all carbohydrates a carbohydrate a glycan a polysaccharide a galacturonan a modified galacturonan

Summary:
Xylogalacturonan is a substituted homogalacturonan in which the α-1,4-linked D-galacturonate backbone is substituted at position O-3 with a β-D-xylopyranose. Occasionally the xylose is further substituted at position O-4 with an additional β linked xylose.

The homogalacturonan backbone is partially methylesterified at the C-6 carboxyl, and may be O-acetylated at positions O-2 or O-3.

Xylogalacturonan has been reported to be abundant in the reproductive tissues of many plants. Recently it was reported to be present in vegetative tissues of Arabidopsis [Zandleven07].

SMILES: C4(OC(OC3(C(OC2(OC(C(OC1(OC(C(C(C1O)O)[R1])C([O-])=O))C(C2O)O)C(=O)[O-]))C(OC(C3O)[R2])C(=O)[O-]))C(O)C(O)C(O)4)

Unification Links: PubChem:25200755

Reactions known to consume the compound:

Not in pathways:
a polysaccharide + H2O → an oligosaccharide

Reactions known to produce the compound:

xylogalacturonan biosynthesis :
a homogalacturonan + UDP-α-D-xylose → a xylogalacturonan + UDP + 4 H+

cellulose and hemicellulose degradation (cellulolosome) :
a feruloyl-polysaccharide + H2O → ferulate + a polysaccharide + 2 H+

Not in pathways:
an N-acetyl-β-D-galactosalaminyl-[glycan] + H2O → a glycan + N-acetyl-β-D-galactosamine

Credits:
Revised 31-Aug-2009 by Caspi R , SRI International


References

Richard09: Richard P, Hilditch S (2009). "D-galacturonic acid catabolism in microorganisms and its biotechnological relevance." Appl Microbiol Biotechnol 82(4);597-604. PMID: 19159926

Zandleven07: Zandleven J, Sorensen SO, Harholt J, Beldman G, Schols HA, Scheller HV, Voragen AJ (2007). "Xylogalacturonan exists in cell walls from various tissues of Arabidopsis thaliana." Phytochemistry 68(8);1219-26. PMID: 17336350


Report Errors or Provide Feedback
Please cite the following article in publications resulting from the use of MetaCyc: Caspi et al, Nucleic Acids Research 42:D459-D471 2014
Page generated by SRI International Pathway Tools version 18.5 on Mon Nov 24, 2014, BIOCYC14B.