Entry
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
Authors
Kauss H, Quader H.
Title
In Vitro Activation of a Galactosyl Transferase Involved in the Osmotic Regulation of Ochromonas.
Journal
Reference
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
Other DBs
ExplorEnz - The Enzyme Database: 2.4.1.96
ExPASy - ENZYME nomenclature database: 2.4.1.96
LinkDB
All DBs