EC Number   |
Substrates |
Organism |
Products |
Reversibility |
|---|
   2.4.1.46 | more |
in etiolated seedlings white light induces a transient increase in MGD mRNA, followed by a subsequent increase in enzyme activity. When cotyledons were detached from seedlings, these light-induced changes diminished |
Cucumis sativus |
? |
- |
? |
| 2.4.1.46 | more |
MGDG synthase catalyzes the final step in thylakoid membrane lipid monogalactosyldiacylglycerol, MGDG, biosynthesis in the plastid envelope |
Arabidopsis thaliana |
? |
- |
? |
| 2.4.1.46 | more |
mono- and digalactosyldiacylglycerol constitute the bulk of membrane lipids in plant chloroplasts and are essential for chloroplast biogenesis and photoautotrophic growth. Type B monogalactosyldiacylglycerol synthases are involved in phosphate starvation-induced lipid remodeling and are crucial for low-phosphate adaptation, overview |
Arabidopsis thaliana |
? |
- |
? |
| 2.4.1.46 | more |
regulation of MGDGsynthesis by phosphatidic acid, which is a general precursor in the synthesis of all glycerolipids and is also a signaling molecule in plants |
Arabidopsis thaliana |
? |
- |
? |
| 2.4.1.46 | more |
binding site for UDP-Gal lays in the cleft separating the two Rossmann folds involving residues of a conserved UDP-sugar binding pocket in the C-domain |
Arabidopsis thaliana |
? |
- |
? |
| 2.4.1.46 | more |
reaction is proposed to to occur in a single displacement SN2 mechanism, with formation of an oxocarbenium ion transition state assisted by a catalytic base, H155. Phosphatidylglycerol binds to the active site where it is stabilized by interactions involving residues P189 and H155, creating an acid-base charge-relay system |
Arabidopsis thaliana |
? |
- |
- |
| 2.4.1.46 | UDP-alpha-D-galactose + 1,2-diacyl-sn-glycerol |
- |
Arabidopsis thaliana |
UDP + 1,2-diacyl-3-O-(beta-D-galactosyl)-sn-glycerol |
- |
? |
| 2.4.1.46 | UDP-alpha-D-galactose + 1,2-diacyl-sn-glycerol |
- |
Arabidopsis thaliana |
UDP + 1,2-diacyl-3-O-(beta-D-galactosyl)-sn-glycerol |
- |
ir |
| 2.4.1.46 | UDP-alpha-D-galactose + 1,2-diacyl-sn-glycerol |
- |
Synechocystis sp. |
UDP + 1,2-diacyl-3-O-(beta-D-galactosyl)-sn-glycerol |
- |
? |
| 2.4.1.46 | UDP-alpha-D-galactose + 1,2-diacyl-sn-glycerol |
- |
Sesamum indicum |
UDP + 1,2-diacyl-3-O-(beta-D-galactosyl)-sn-glycerol |
- |
? |
