Compound as reactive (1)
NADP+ + (6R)-L-erythro-5,6,7,8-tetrahydrobiopterin ← NADPH + H+ + (6R)-6-lactoyl-5,6,7,8-tetrahydropterin
Compound as product (1)
NADP+ + (6R)-6-lactoyl-5,6,7,8-tetrahydropterin ← NADPH + H+ + (6R)-6-pyruvoyl-5,6,7,8-tetrahydropterin
Reversible reaction (1)
NADP+ + (6R)-L-threo-5,6,7,8-tetrahydrobiopterin ↔ NADPH + H+ + (6R)-6-lactoyl-5,6,7,8-tetrahydropterin