KEGG   ENZYME: 2.4.1.123Help
Entry
EC 2.4.1.123                Enzyme                                 

Name
inositol 3-alpha-galactosyltransferase;
UDP-D-galactose:inositol galactosyltransferase;
UDP-galactose:myo-inositol 1-alpha-D-galactosyltransferase;
UDPgalactose:myo-inositol 1-alpha-D-galactosyltransferase;
galactinol synthase;
inositol 1-alpha-galactosyltransferase;
uridine diphosphogalactose-inositol galactosyltransferase;
GolS;
UDP-galactose:myo-inositol 3-alpha-D-galactosyltransferase
Class
Transferases;
Glycosyltransferases;
Hexosyltransferases
BRITE hierarchy
Sysname
UDP-alpha-D-galactose:myo-inositol 3-alpha-D-galactosyltransferase
Reaction(IUBMB)
UDP-alpha-D-galactose + myo-inositol = UDP + O-alpha-D-galactosyl-(1->3)-1D-myo-inositol [RN:R01192 R06214]
Reaction(KEGG)
Substrate
UDP-alpha-D-galactose [CPD:C00052];
myo-inositol [CPD:C00137]
Product
UDP [CPD:C00015];
O-alpha-D-galactosyl-(1->3)-1D-myo-inositol [CPD:C01235]
Comment
An enzyme from plants involved in the formation of raffinose and stachyose [cf. EC 2.4.1.67 (galactinol---raffinose galactosyltransferase) and EC 2.4.1.82 (galactinol---sucrose galactosyltransferase)].
History
EC 2.4.1.123 created 1984, modified 2003
Pathway
Galactose metabolism
Reference
1
  Authors
Pharr, D.M., Sox, H.N., Locy, R.D. and Huber, S.C.
  Title
Partial characterization of the galactinol forming enzyme from leaves of Cucumis sativus L.
  Journal
Plant Sci. Lett. 23 (1981) 25-33.
Other DBs
ExplorEnz - The Enzyme Database: 
IUBMB Enzyme Nomenclature: 
ExPASy - ENZYME nomenclature database: 
BRENDA, the Enzyme Database: 
CAS: 
79955-89-8

DBGET integrated database retrieval system