ENZYME entry: EC 2.4.1.46

Accepted Name
Monogalactosyldiacylglycerol synthase.
Alternative Name(s)
1,2-diacylglycerol 3-beta-galactosyltransferase.
1-beta-MGDG.
MGDG synthase.
UDP galactose-1,2-diacylglycerol galactosyltransferase.
UDP-galactose-diacylglyceride galactosyltransferase.
UDP-galactose:diacylglycerol galactosyltransferase.
UDPgalactose:1,2-diacylglycerol 3-beta-D-galactosyltransferase.
Uridine diphosphogalactose-1,2-diacylglycerol galactosyltransferase.
Reaction catalysed
UDP-alpha-D-galactose + 1,2-diacyl-sn-glycerol <=> UDP + 3-beta-D-galactosyl-1,2-diacyl-sn-glycerol
Comment(s)
  • This enzyme adds only one galactosyl group to the diacylglycerol; EC 2.4.1.241 adds a galactosyl group to the product of the above reaction.
  • There are three isoforms in Arabidopsis that can be divided into two types, A-type (MGD1) and B-type (MGD2 and MGD3).
  • MGD1 is the isoform responsible for the bulk of monogalactosyldiacylglycerol (MGDG) synthesis in Arabidopsis.
Cross-references
BRENDA2.4.1.46
EC2PDB2.4.1.46
ExplorEnz2.4.1.46
PRIAM enzyme-specific profiles2.4.1.46
KEGG Ligand Database for Enzyme Nomenclature2.4.1.46
IUBMB Enzyme Nomenclature2.4.1.46
IntEnz2.4.1.46
MEDLINEFind literature relating to 2.4.1.46
MetaCyc2.4.1.46
UniProtKB/Swiss-Prot
O81770, MGDG1_ARATH;  Q69QJ7, MGDG1_ORYSJ;  O82730, MGDG2_ARATH;  
A2YTP9, MGDG2_ORYSI;  Q6UTZ2, MGDG2_ORYSJ;  Q9SI93, MGDG3_ARATH;  
Q0DWQ1, MGDG3_ORYSJ;  P93115, MGDG_CUCSA;  Q9FZL4, MGDG_SOYBN;  
Q9SM44, MGDG_SPIOL;  Q9FZL3, MGDG_TOBAC;  

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