IUBMB Enzyme Nomenclature


Accepted name: EGF-domain serine xylosyltransferase

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

Other name(s): POGLUT1 (gene name) (ambiguous); rumi (gene name) (ambiguous)

Systematic name: UDP-α-D-xylose:[protein with EGF-like domain]-L-serine O-β-xylosyltransferase (configuration-inverting)

Comments: The enzyme, found in animals and insects, xylosylates at the serine in the C-X-S-X-P-C motif of epidermal growth factor-like (EGF-like) domains. The enzyme is bifunctional also being active with UDP-α-glucose as donor (EC, EGF-domain serine glucosyltransferase).

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


1. Li, Z., Fischer, M., Satkunarajah, M., Zhou, D., Withers, S.G. and Rini, J.M. Structural basis of Notch O-glucosylation and O-xylosylation by mammalian protein-O-glucosyltransferase 1 (POGLUT1). Nat. Commun. 8 (2017) 185. [PMID: 28775322]

[EC created 2020]

Return to EC 2.4.2 home page
Return to EC 2.4 home page
Return to EC 2 home page
Return to Enzymes home page
Return to IUBMB Biochemical Nomenclature home page