The Enzyme Database

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Accepted name: sn-glycerol-3-phosphate 1-galactosyltransferase
Reaction: UDP-α-D-galactose + sn-glycerol 3-phosphate = UDP + 1-O-α-D-galactosyl-sn-glycerol 3-phosphate
Other name(s): isofloridoside-phosphate synthase; UDP-Gal:sn-glycero-3-phosphoric acid 1-α-galactosyl-transferase; UDPgalactose:sn-glycerol-3-phosphate α-D-galactosyltransferase; uridine diphosphogalactose-glycerol phosphate galactosyltransferase; glycerol 3-phosphate 1α-galactosyltransferase; UDP-galactose:sn-glycerol-3-phosphate 1-α-D-galactosyltransferase
Systematic name: UDP-α-D-galactose:sn-glycerol-3-phosphate 1-α-D-galactosyltransferase
Comments: The product is hydrolysed by a phosphatase to isofloridoside, which is involved in osmoregulation (cf. EC sn-glycerol-3-phosphate 2-α-galactosyltransferase).
Links to other databases: BRENDA, EXPASY, KEGG, MetaCyc, CAS registry number: 9076-70-4
1.  Kauss, H. and Quader, H. In vitro activation of a galactosyl transferase involved in the osmotic regulation of Ochromonas. Plant Physiol. 58 (1976) 295–298. [PMID: 16659666]
2.  Kauss, H. and Schubert, B. `First demonstration of UDP-gal:sn-glycero-3-phosphoric acid 1α-galactosyl-transferase and its possible role in osmoregulation. FEBS Lett. 19 (1971) 131–135. [DOI] [PMID: 11946194]
[EC created 1978]

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