KEGG   ENZYME: 2.4.1.67Help
Entry
EC 2.4.1.67                 Enzyme                                 
Name
galactinol---raffinose galactosyltransferase;
galactinol-raffinose galactosyltransferase;
stachyose synthetase;
alpha-D-galactosyl-(1->3)-myo-inositol:raffinose galactosyltransferase
Class
Transferases;
Glycosyltransferases;
Hexosyltransferases
BRITE hierarchy
Sysname
alpha-D-galactosyl-(1->3)-1D-myo-inositol:raffinose galactosyltransferase
Reaction(IUBMB)
alpha-D-galactosyl-(1->3)-1D-myo-inositol + raffinose = myo-inositol + stachyose [RN:R03418 R06042]
Reaction(KEGG)
Substrate
alpha-D-galactosyl-(1->3)-1D-myo-inositol [CPD:C01235];
raffinose [CPD:C00492]
Product
myo-inositol [CPD:C00137];
stachyose [CPD:C01613]
Comment
This enzyme also catalyses galactosyl transfer from stachyose to raffinose (shown by labelling) [4]. For synthesis of the substrate, see EC 2.4.1.123, inositol 3-alpha-galactosyltransferase. See also EC 2.4.1.82, galactinol---sucrose galactosyltransferase.
Pathway
Galactose metabolism
Orthology
K06611  
stachyose synthetase
Genes
ATH: 
ALY: 
GMX: 
MTR: 
CSV: 
RCU: 
POP: 
VVI: 
BDI: 
SBI: 
SORBI_05g026330(SORBIDRAFT_05g026330)
Taxonomy
Reference
1
  Authors
Tanner, W.
  Title
Die Biosynthese der Stachyose.
  Journal
Ber. Dtsch. Bot. Ges. 80 (1967) 111.
Reference
2  [PMID:5655499]
  Authors
Tanner W, Kandler O.
  Title
Myo-inositol, a cofactor in the biosynthesis of stachyose.
  Journal
Eur. J. Biochem. 4 (1968) 233-9.
  Organism
Phaseolus vulgaris
Reference
3  [PMID:4774118]
  Authors
Lehle L, Tanner W.
  Title
The function of myo-inositol in the biosynthesis of raffinose. Purification and characterization of galactinol:sucrose 6-galactosyltransferase from Vicia faba seeds.
  Journal
Eur. J. Biochem. 38 (1973) 103-10.
  Organism
Vicia faba
Reference
4
  Authors
Kandler, O. and Hopf, H.
  Title
Occurrence, metabolism and function of oligosaccharides.
  Journal
In: Preiss, J. (Ed.), The Biochemistry of Plant, vol. 3, Academic Press, New York, 1980, p. 221-270.
Other DBs
ExplorEnz - The Enzyme Database: 
IUBMB Enzyme Nomenclature: 
ExPASy - ENZYME nomenclature database: 
BRENDA, the Enzyme Database: 
CAS: 
37277-70-6
DBGET integrated database retrieval system