sepiapterin reductase (NADP+) activity
Catalysis of the reactions: 7,8-dihydrobiopterin + NADP+ = sepiapterin + NADPH + H+ and (6R)-L-erythro-5,6,7,8-tetrahydrobiopterin + 2 NADP+ = 6-pyruvoyl-5,6,7,8-tetrahydropterin + 2 H+ + 2 NADPH.
GO:0016616
oxidoreductase activity, acting on the CH-OH group of donors, NAD or NADP as acceptor
is_a
7,8-dihydrobiopterin:NADP+ oxidoreductase activity
related