EC Number   |
General Information |
Reference |
|---|
   2.5.1.116 | physiological function |
combined expression of hydroxyphenylpyruvate dioxygenase/bi-functional chorismate mutase/prephenate dehydrogenase and homogentisate geranylgeranyl transferase in Arabidopsis leaves and seeds results in large additive increases in vitamin E production, indicating that homogentisate concentrations limit homogentisate geranylgeranyl transferase-catalyzed tocotrienol synthesis |
728486 |
| 2.5.1.116 | physiological function |
SLR1736 gene disruption does not lead to significant differences in cellular plastoquinone, phylloquinone, and chlorophyll levels, but causes absence of tocopherols without affecting plastoquinone-9 levels |
726214 |
| 2.5.1.116 | physiological function |
the enzyme is involved in the biosynthesis of the vitamin E, tocotrienols |
-, 726173 |
| 2.5.1.116 | physiological function |
tocotrienol precursors such as homogentisate and geranylgeranyl diphosphate decrease during maturation of the grain. HGGT is an essential, but not limiting factor for tocotrienol biosynthesis, and tocotrienol precursors can regulate the tocotrienol level in grain |
738276 |
| 2.5.1.116 | physiological function |
transgenic expression of the barley homogentisic acid geranylgeranyl transferase in Arabidopsis thaliana leaves results in accumulation of tocotrienols, which are absent from leaves of nontransformed plants, and a 10- to 15fold increase in total tocotrienols plus tocopherols. Overexpression of the barley enzyme in corn seeds results in an increase in tocotrienol and tocopherol content of as much as 6fold |
728353 |
