2.7.6.3 2-amino-4-hydroxy-6-hydroxymethyldihydropteridine diphosphokinase; 2-amino-4-hydroxy-6-hydroxymethyldihydropteridine pyrophosphokinase; H2-pteridine-CH2OH pyrophosphokinase; 7,8-dihydroxymethylpterin-pyrophosphokinase; HPPK; 7,8-dihydro-6-hydroxymet • • •