preferred_name: "pteridine reductase"
preferred_name_lc: "pteridine reductase"
label: (6R)-L-erythro-5,6,7,8-tetrahydrobiopterin + 2 NADP(+) = L-erythro-biopterin + 2 NADPH + 2 H(+)
label_lc: (6r)-l-erythro-5,6,7,8-tetrahydrobiopterin + 2 nadp(+) = l-erythro-biopterin + 2 nadph + 2 h(+)