EC Number |
Substrates |
Organism |
Products |
Reversibility |
---|
2.5.1.116 | geranylgeranyl diphosphate + homogentisate |
the enzyme is involved in the biosynthesis of the vitamin E, tocotrienols. It uses primarily geranylgeranyl diphosphate as a substrate, but is capable of generating the 2-methyl-6-phytylbenzoquinol precursor of tocopherols, particularly in the presence of elevated ratios of phytyl diphosphate:geranylgeranyl diphosphate |
Hordeum vulgare |
diphosphate + 6-geranylgeranyl-2-methylbenzene-1,4-diol + CO2 |
- |
? |
2.5.1.116 | geranylgeranyl diphosphate + homogentisate |
the enzyme is six times more active (Vmax) with geranylgeranyl diphosphate than with phytyl diphosphate. Small difference in Km-value of geranylgeranyl diphosphate and phytyl diphosphate |
Hordeum vulgare |
diphosphate + 6-geranylgeranyl-2-methylbenzene-1,4-diol + CO2 |
- |
? |
2.5.1.116 | geranylgeranyl diphosphate + homogentisate |
about 18% of the activity with phythyl diphosphate |
Synechocystis sp. |
diphosphate + 6-geranylgeranyl-2-methylbenzene-1,4-diol + CO2 |
- |
? |
2.5.1.116 | geranylgeranyl diphosphate + homogentisate |
the enzyme is involved in the biosynthesis of the vitamin E, tocotrienols. It uses primarily geranylgeranyl diphosphate as a substrate, but is capable of generating the 2-methyl-6-phytylbenzoquinol precursor of tocopherols, particularly in the presence of elevated ratios of phytyl diphosphate:geranylgeranyl diphosphate |
Hordeum vulgare cv. Morex |
diphosphate + 6-geranylgeranyl-2-methylbenzene-1,4-diol + CO2 |
- |
? |
2.5.1.116 | geranylgeranyl diphosphate + homogentisate |
the enzyme is six times more active (Vmax) with geranylgeranyl diphosphate than with phytyl diphosphate. Small difference in Km-value of geranylgeranyl diphosphate and phytyl diphosphate |
Hordeum vulgare cv. Morex |
diphosphate + 6-geranylgeranyl-2-methylbenzene-1,4-diol + CO2 |
- |
? |
2.5.1.116 | more |
no substrate: solanesyl diphosphate |
Synechocystis sp. |
? |
- |
? |
2.5.1.116 | phytyl diphosphate + homogentisate |
preferred substrate |
Synechocystis sp. |
diphosphate + 2-methyl-6-phytylbenzene-1,4-diol + CO2 |
- |
? |