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Literature summary for 2.5.1.116 extracted from

  • Yang, W.; Cahoon, R.E.; Hunter, S.C.; Zhang, C.; Han, J.; Borgschulte, T.; Cahoon, E.B.
    Vitamin E biosynthesis: functional characterization of the monocot homogentisate geranylgeranyl transferase (2011), Plant J., 65, 206-217.
    View publication on PubMed

Cloned(Commentary)

Cloned (Comment) Organism
expressed under the control of the polyhedron promoter in Sf-9 cells using baculovirus-mediated transfection Hordeum vulgare

KM Value [mM]

KM Value [mM] KM Value Maximum [mM] Substrate Comment Organism Structure
0.00014
-
geranylgeranyl diphosphate pH and temperature not specified in the publication Hordeum vulgare

Localization

Localization Comment Organism GeneOntology No. Textmining
plastid in seeds Hordeum vulgare 9536
-

Metals/Ions

Metals/Ions Comment Organism Structure
Mg2+ required Hordeum vulgare

Natural Substrates/ Products (Substrates)

Natural Substrates Organism Comment (Nat. Sub.) Natural Products Comment (Nat. Pro.) Rev. Reac.
geranylgeranyl diphosphate + homogentisate Hordeum vulgare 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 diphosphate + 6-geranylgeranyl-2-methylbenzene-1,4-diol + CO2
-
?
geranylgeranyl diphosphate + homogentisate Hordeum vulgare cv. Morex 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 diphosphate + 6-geranylgeranyl-2-methylbenzene-1,4-diol + CO2
-
?

Organism

Organism UniProt Comment Textmining
Hordeum vulgare
-
-
-
Hordeum vulgare cv. Morex
-
-
-

Source Tissue

Source Tissue Comment Organism Textmining
endosperm expressed primarily in seed endosperm Hordeum vulgare
-
seed expressed primarily in seed endosperm Hordeum vulgare
-

Substrates and Products (Substrate)

Substrates Comment Substrates Organism Products Comment (Products) Rev. Reac.
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
-
?
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
-
?
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
-
?
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
-
?

Synonyms

Synonyms Comment Organism
HGGT
-
Hordeum vulgare
slr1736
-
Hordeum vulgare

General Information

General Information Comment Organism
physiological function the enzyme is involved in the biosynthesis of the vitamin E, tocotrienols Hordeum vulgare