homogentisate + (2E,6E,10E)-geranylgeranyl diphosphate + H(+) => 6-geranylgeranyl-2-methylbenzene-1,4-diol + CO2 + diphosphate
homogentisate + (2e,6e,10e)-geranylgeranyl diphosphate + h(+) => 6-geranylgeranyl-2-methylbenzene-1,4-diol + co2 + diphosphate