IUBMB Enzyme Nomenclature


Accepted name: xylogalacturonan β-1,3-xylosyltransferase

Reaction: Transfers a xylosyl residue from UDP-D-xylose to a D-galactose residue in xylogalacturonan, forming a β-1,3-D-xylosyl-D-galactose linkage.

Other name(s): xylogalacturonan xylosyltransferase; XGA xylosyltransferase

Systematic name: UDP-D-xylose:xylogalacturonan β-1,3-xylosyltransferase

Comments: Involved in plant cell wall synthesis. The enzyme from Arabidopsis thaliana also transfers D-xylose from UDP-D-xylose onto oligogalacturonide acceptors. The enzyme did not show significant activity with UDP-glucose, UDP-galactose, or UDP-N-acetyl-D-glucosamine as sugar donors.

Links to other databases: BRENDA, EXPASY, KEGG, Metacyc, CAS registry number:


1. Jensen, J.K., Sorensen, S.O., Harholt, J., Geshi, N., Sakuragi, Y., Moller, I., Zandleven, J., Bernal, A.J., Jensen, N.B., Sorensen, C., Pauly, M., Beldman, G., Willats, W.G. and Scheller, H.V. Identification of a xylogalacturonan xylosyltransferase involved in pectin biosynthesis in Arabidopsis. Plant Cell 20 (2008) 1289-1302. [PMID: 18460606]

[EC created 2009]

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