MetaCyc Reaction:

Superclasses: Reactions Classified By Conversion Type Simple Reactions Chemical Reactions
Reactions Classified By Substrate Small-Molecule Reactions

EC Number:

Enzymes and Genes:

Arabidopsis thaliana col : 3β-hydroxy sterol glucosyltransferase Inferred from experiment : UGT80A2
Withania somnifera : 3β-hydroxy sterol glucosyltransferase Inferred from experiment : SGTL1

The reaction direction shown, that is, A + B ↔ C + D versus C + D ↔ A + B, is in accordance with the Enzyme Commission system.

Most BioCyc compounds have been protonated to a reference pH value of 7.3, and some reactions have been computationally balanced for hydrogen by adding free protons. Please see the PGDB Concepts Guide for more information.

Mass balance status: Balanced.

Instance reaction:
UDP-α-D-glucose + solasodine = UDP + solasodine 3-O-β-D-glucopyranoside + H+ (

Enzyme Commission Primary Name: sterol 3β-glucosyltransferase

Enzyme Commission Synonyms: UDPG:sterol glucosyltransferase, UDP-glucose-sterol β-glucosyltransferase, sterol:UDPG glucosyltransferase, UDPG-SGTase, uridine diphosphoglucose-poriferasterol glucosyltransferase, uridine diphosphoglucose-sterol glucosyltransferase, sterol glucosyltransferase, sterol-β-D-glucosyltransferase, UDP-glucose-sterol glucosyltransferase

Taxonomic Range: Viridiplantae , Fungi

Standard Gibbs Free Energy (ΔrG in kcal/mol): -95.8136 Inferred by computational analysis [Latendresse13]

Enzyme Commission Summary:
Not identical with EC (nuatigenin 3β-glucosyltransferase) or EC (sarsapogenin 3β-glucosyltransferase).

Citations: [MurakamiMurofus89]

Gene-Reaction Schematic: ?

Gene-Reaction Schematic

Instance reaction of [UDP-α-D-glucose + a sterol = UDP + an O-glucosylsterol + H+] (
i1: UDP-α-D-glucose + solasodine = UDP + solasodine 3-O-β-D-glucopyranoside + H+ (

Unification Links: KEGG:R02113

Relationship Links: BRENDA:EC: , ENZYME:EC: , IUBMB-ExplorEnz:EC:


Latendresse13: Latendresse M. (2013). "Computing Gibbs Free Energy of Compounds and Reactions in MetaCyc."

MurakamiMurofus89: Murakami-Murofushi K, Ohta J (1989). "Expression of UDP-glucose: poriferasterol glucosyltransferase in the process of differentiation of a true slime mold, Physarum polycephalum." Biochim Biophys Acta 992(3);412-5. PMID: 2528379

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 19.0 on Tue Oct 13, 2015, biocyc12.