ID 2.1.1.329 DE demethylphylloquinol methyltransferase. AN 2-phytyl-1,4-naphthoquinol methyltransferase. CA demethylphylloquinol + S-adenosyl-L-methionine = H(+) + phylloquinol + CA S-adenosyl-L-homocysteine. CC -!- The enzyme, found in plants and cyanobacteria, catalyzes the final CC step in the biosynthesis of phylloquinone (vitamin K1), an electron CC carrier associated with photosystem I. CC -!- The enzyme is specific for the quinol form of the substrate, and does CC not act on the quinone form. CC -!- Formerly EC 2.1.1.n12. DR Q3ED65, MENG_ARATH ; B2IUM7, MENG_NOSP7 ; Q8YLP4, MENG_NOSS1 ; DR Q31P90, MENG_SYNE7 ; Q5N4X9, MENG_SYNP6 ; P72818, MENG_SYNY3 ; DR Q8DGE4, MENG_THEVB ; Q3MD91, MENG_TRIV2 ; //