KEGG   ENZYME: 2.4.1.96Help
Entry
EC 2.4.1.96                 Enzyme                                 

Name
sn-glycerol-3-phosphate 1-galactosyltransferase;
isofloridoside-phosphate synthase;
UDP-Gal:sn-glycero-3-phosphoric acid 1-alpha-galactosyl-transferase;
UDPgalactose:sn-glycerol-3-phosphate alpha-D-galactosyltransferase;
uridine diphosphogalactose-glycerol phosphate galactosyltransferase;
glycerol 3-phosphate 1alpha-galactosyltransferase;
UDP-galactose:sn-glycerol-3-phosphate 1-alpha-D-galactosyltransferase
Class
Transferases;
Glycosyltransferases;
Hexosyltransferases
BRITE hierarchy
Sysname
UDP-alpha-D-galactose:sn-glycerol-3-phosphate 1-alpha-D-galactosyltransferase
Reaction(IUBMB)
UDP-alpha-D-galactose + sn-glycerol 3-phosphate = UDP + 1-O-alpha-D-galactosyl-sn-glycerol 3-phosphate [RN:R00854]
Reaction(KEGG)
Substrate
UDP-alpha-D-galactose [CPD:C00052];
sn-glycerol 3-phosphate [CPD:C00093]
Product
UDP [CPD:C00015];
1-O-alpha-D-galactosyl-sn-glycerol 3-phosphate [CPD:C04703]
Comment
The product is hydrolysed by a phosphatase to isofloridoside, which is involved in osmoregulation (cf. EC 2.4.1.137 sn-glycerol-3-phosphate 2-alpha-galactosyltransferase).
History
EC 2.4.1.96 created 1978
Reference
1  [PMID:16659666]
  Authors
Kauss H, Quader H.
  Title
In Vitro Activation of a Galactosyl Transferase Involved in the Osmotic Regulation of Ochromonas.
  Journal
Plant. Physiol. 58 (1976) 295-298.
Reference
2  [PMID:11946194]
  Authors
Kauss H, Schobert B.
  Title
First demonstration of UDP-GAL: sn-glycero-3-phosphoric acid 1-alpha-galactosyl-transferase and its possible role in osmoregulation.
  Journal
FEBS. Lett. 19 (1971) 131-135.
Other DBs
ExplorEnz - The Enzyme Database: 
IUBMB Enzyme Nomenclature: 
ExPASy - ENZYME nomenclature database: 
BRENDA, the Enzyme Database: 
CAS: 
9076-70-4

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