EC 2.5.1.115 - Homogentisate phytyltransferase

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ENZYME: 2.5.1.115


ID   2.5.1.115
DE   Homogentisate phytyltransferase.
AN   HPT.
CA   Phytyl diphosphate + homogentisate = diphosphate + 2-methyl-6-
CA   phytylbenzene-1,4-diol + CO(2).
CF   Mg(2+).
CC   -!- Involved in the biosynthesis of the vitamin E tocopherols.
CC   -!- While the enzyme from the cyanobacterium Synechocystis PCC 6803 has
CC       an appreciable activity with geranylgeranyl diphosphate
CC       (EC 2.5.1.116), the enzyme from the plant Arabidopsis thaliana has
CC       only a low activity with that substrate.
CC   -!- Formerly EC 2.5.1.n8.
DR   P73726    , HGGT_SYNY3 ;  Q8VWJ1    , HPT1_ARATH ;  B7FA90    , HPT1_ORYSJ ;
DR   Q0D576    , HPT2_ORYSJ ;
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