EC 2.5.1.116 - Homogentisate geranylgeranyltransferase

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ENZYME: 2.5.1.116


ID   2.5.1.116
DE   Homogentisate geranylgeranyltransferase.
AN   HGGT.
CA   Geranylgeranyl diphosphate + homogentisate = diphosphate +
CA   6-geranylgeranyl-2-methylbenzene-1,4-diol + CO(2).
CF   Mg(2+).
CC   -!- Involved in the biosynthesis of the vitamin E, tocotrienols.
CC   -!- While the enzyme from the bacterium Synechocystis PCC 6803 has higher
CC       activity with phytyl diphosphate (EC 2.5.1.115) the enzymes from
CC       barley, rice and wheat have only a low activity with that substrate.
DR   Q7XB14    , HGGT_HORVU ;  Q0DAK7    , HGGT_ORYSJ ;  Q7XB13    , HGGT_WHEAT ;
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