|Gene:||HPT1||Accession Number: AT2G18950 (MetaCyc)|
Synonyms: TPT1, At2g18950, VTE2
Species: Arabidopsis thaliana col
Over-expression of AtHPT (the gene encoding homogentisate phytyltransferase) in leaves and seeds of Arabidopsis increased tocopherol level in both tissues. It indicates that HPT activity is limiting for tocopherol biosynthesis in Arabidopsis [Collakova03].
Unification Links: TAIR:At2g18950
Relationship Links: Entrez-Nucleotide:PART-OF:AF324344
|Cellular Component:||GO:0009507 - chloroplast [Collakova01]|
Enzymatic reaction of: homogentisate phytyltransferase
EC Number: 18.104.22.168
The reaction direction shown, that is, A + B ↔ C + D versus C + D ↔ A + B, is in accordance with the Enzyme Commission system.
The reaction is favored in the direction shown.
In Pathways: vitamin E biosynthesis (tocopherols)
Collakova01: Collakova E, DellaPenna D (2001). "Isolation and functional analysis of homogentisate phytyltransferase from Synechocystis sp. PCC 6803 and Arabidopsis." Plant Physiol 127(3);1113-24. PMID: 11706191
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