ID 2.5.1.117 DE homogentisate solanesyltransferase. AN HST. CA all-trans-nonaprenyl diphosphate + H(+) + homogentisate = 2-methyl-6-all- CA trans-nonaprenylbenzene-1,4-diol + CO2 + diphosphate. CC -!- Part of the biosynthesis pathway of plastoquinol-9. CC -!- The enzymes purified from the plant Arabidopsis thaliana and the alga CC Chlamydomonas reinhardtii are also active in vitro with unsaturated CC C10-C20 prenyl diphosphates, producing main products that are not CC decarboxylated. DR Q1ACB3, HSTC_ARATH ; A1JHN0, HSTC_CHLRE ; //