IUBMB Enzyme Nomenclature


Accepted name: protein xylosyltransferase

Reaction: UDP-α-D-xylose + [protein]-L-serine = UDP + [protein]-3-O-(β-D-xylosyl)-L-serine

For diagram of reaction click here

Other name(s): UDP-D-xylose:core protein β-D-xylosyltransferase; UDP-D-xylose:core protein xylosyltransferase; UDP-D-xylose:proteoglycan core protein β-D-xylosyltransferase; UDP-xylose-core protein β-D-xylosyltransferase; uridine diphosphoxylose-core protein β-xylosyltransferase; uridine diphosphoxylose-protein xylosyltransferase; UDP-D-xylose:protein β-D-xylosyltransferase

Systematic name: UDP-α-D-xylose:protein β-D-xylosyltransferase (configuration-inverting)

Comments: Involved in the biosynthesis of the linkage region of glycosaminoglycan chains as part of proteoglycan biosynthesis (chondroitin, dermatan and heparan sulfates).

Links to other databases: BRENDA, EXPASY, KEGG, MetaCyc, PDB, CAS registry number: 55576-38-0


1. Stoolmiller, A.C., Horwitz, A.L. and Dorfman, A. Biosynthesis of the chondroitin sulfate proteoglycan. Purification and properties of xylosyltransferase. J. Biol. Chem. 247 (1972) 3525-3532. [PMID: 5030630]

2. Götting, C., Kuhn, J., Zahn, R., Brinkmann, T. and Kleesiek, K. Molecular cloning and expression of human UDP-D-xylose:proteoglycan core protein β-D-xylosyltransferase and its first isoform XT-II. J. Mol. Biol. 304 (2000) 517-528. [PMID: 11099377]

[EC created 1976, modified 2002, modified 2016]

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