phytyl diphosphate + homogentisate + H(+) = 2-methyl-6-phytyl-1,4-benzene-1,4-diol + CO2 + diphosphate
phytyl diphosphate + homogentisate + h(+) = 2-methyl-6-phytyl-1,4-benzene-1,4-diol + co2 + diphosphate