IUBMB Enzyme Nomenclature


Accepted name: soyasapogenol B glucuronide galactosyltransferase

Reaction: UDP-α-D-galactose + soyasapogenol B 3-O-β-D-glucuronide = UDP + soyasaponin III

For diagram of reaction click here.

Glossary: soyasaponin III = 3β-(2-O-β-D-galactopyranosyl-β-D-glucopyranosyloxyuronic acid)olean-12-ene-22β,24-diol

Other name(s): UDP-galactose:SBMG-galactosyltransferase; UGT73P2; GmSGT2 (gene name); UDP-galactose:soyasapogenol B 3-O-glucuronide β-D-galactosyltransferase

Systematic name: UDP-α-D-galactose:soyasapogenol B 3-O-glucuronide β-D-galactosyltransferase

Comments: Part of the biosynthetic pathway for soyasaponins.

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


1. Shibuya, M., Nishimura, K., Yasuyama, N. and Ebizuka, Y. Identification and characterization of glycosyltransferases involved in the biosynthesis of soyasaponin I in Glycine max. FEBS Lett. 584 (2010) 2258-2264. [PMID: 20350545]

[EC created 2011]

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