KEGG   ENZYME: 2.4.1.82Help
Entry
EC 2.4.1.82                 Enzyme                                 
Name
galactinol---sucrose galactosyltransferase;
1-alpha-D-galactosyl-myo-inositol:sucrose 6-alpha-D-galactosyltransferase;
alpha-D-galactosyl-(1->3)-myo-inositol:sucrose 6-alpha-D-galactosyltransferase;
raffinose synthase;
RafS
Class
Transferases;
Glycosyltransferases;
Hexosyltransferases
BRITE hierarchy
Sysname
alpha-D-galactosyl-(1->3)-1D-myo-inositol:sucrose 6-alpha-D-galactosyltransferase
Reaction(IUBMB)
alpha-D-galactosyl-(1->3)-1D-myo-inositol + sucrose = myo-inositol + raffinose [RN:R02411 R06071]
Reaction(KEGG)
Substrate
alpha-D-galactosyl-(1->3)-1D-myo-inositol [CPD:C01235];
sucrose [CPD:C00089]
Product
myo-inositol [CPD:C00137];
raffinose [CPD:C00492]
Comment
4-Nitrophenyl alpha-D-galactopyranoside can also act as donor. The enzyme also catalyses an exchange reaction between raffinose and sucrose (cf. EC 2.4.1.123, inositol 3-alpha-galactosyltransferase).
Pathway
Galactose metabolism
Orthology
K06617  
raffinose synthase
Genes
ATH: 
AT1G55740(SIP1) AT3G57520(SIP2) AT5G20250(DIN10) AT5G40390(SIP1)
ALY: 
GMX: 
MTR: 
CSV: 
RCU: 
POP: 
VVI: 
OSA: 
DOSA: 
Os01t0170000-01(Os01g0170000) Os07t0209100-01(Os07g0209100) Os08t0495800-02(Os08g0495800)
BDI: 
100826036 100831154 100832989 100839679
SBI: 
SORBI_01g004130(SORBIDRAFT_01g004130) SORBI_02g006320(SORBIDRAFT_02g006320) SORBI_03g004540(SORBIDRAFT_03g004540) SORBI_07g028620(SORBIDRAFT_07g028620) SORBI_10g004950(SORBIDRAFT_10g004950)
ZMA: 
100281159 100281190 606431 606463(AGA1) 606464(AGA2)
SMO: 
SELMODRAFT_140678 SELMODRAFT_266822
PPP: 
PHYPADRAFT_104518 PHYPADRAFT_202553
CRE: 
CHLREDRAFT_205571(SIP1)
VCN: 
VOLCADRAFT_100756
OLU: 
OSTLU_744
OTA: 
Ot06g02500
TPS: 
THAPSDRAFT_31661
 » show all
Taxonomy
Reference
1  [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
2  [PMID:5491608]
  Authors
Lehle L, Tanner W, Kandler O.
  Title
Myo-inositol, a cofactor in the biosynthesis of raffinose.
  Journal
Hoppe. Seylers. Z. Physiol. Chem. 351 (1970) 1494-8.
  Organism
Vicia faba
Other DBs
ExplorEnz - The Enzyme Database: 
IUBMB Enzyme Nomenclature: 
ExPASy - ENZYME nomenclature database: 
BRENDA, the Enzyme Database: 
CAS: 
62213-45-0
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