EC Number   |
Activating Compound |
Reference |
|---|
   2.4.1.46 | illumination |
3fold increase of activity in dark-grown seedlings 42 h after illumination |
489234 |
| 2.4.1.46 | Lipid |
addition of lipids extracted from chloroplast membranes is necessary to reveal activity of highly delipidated enzyme fraction |
489231 |
| 2.4.1.46 | more |
intramolecular disulfide bonds are involved in MGD activation |
673660 |
| 2.4.1.46 | more |
purified enzyme is not activated by lipids |
489228 |
| 2.4.1.46 | myristic acid |
stimulates |
489227 |
| 2.4.1.46 | palmitic acid |
stimulates |
489227 |
| 2.4.1.46 | phosphatidic acid |
- |
736153 |
| 2.4.1.46 | phosphatidic acid |
allosterically activates MGD1, half-maximal activation at about 0.2 mol%. With 0.15 mol% of phosphatidic acid, the enzyme velocity versus substrate curve is sigmoid, whereas with 1.5 mol% of phosphatidic acid, the curve is hyperbolic. MGDG synthase activity of leaf homogenates is dependent on the constant presence of phosphatidic acid, decrease of phosphatidic acid production leads to a decrease of the MGDG synthase activity. Molecular discrimination of phosphatidic acid and phosphatidylglycerol binding sites, overview |
704698 |
| 2.4.1.46 | phosphatidylethanolamine |
mild activity-enhancing effect (60%, at 40 mol percent concentration) |
735136 |
| 2.4.1.46 | phosphatidylglycerol |
best activator of partially purified, delipidated enzyme |
489231 |
