Involved in the synthesis of phylloquinone (vitamin K1). Catalyzes the transfer of a prenyl chain to 2-carboxy-1,4-naphthoquinone. 1,4-dioxo-2-naphthoate + H(+) + phytyl diphosphate = CO2 + demethylphylloquinone + diphosphate Slower growth and dwarfism. Albino phenotype in aging leaves. Decreased number of chloroplasts, but normal lamellar structure retained. Absence of phylloquinone and 97% decrease in the content of plastoquinone. Belongs to the MenA family. Type 2 subfamily.