1.1.1.169 (R)-pantoate + NADP+ = 2-dehydropantoate + NADPH + H+ - 1.1.1.169 (R)-pantoate + NADP+ = 2-dehydropantoate + NADPH + H+ molecular catalytic mechanism, substrate and cofactor binding, Asn98, Glu256, and Lys176 are essential, overview 1.1.1.169 (R)-pantoate + NADP+ = 2-dehydropantoate + NADPH + H+ protein-ligand interactions, overview 1.1.1.169 (R)-pantoate + NADP+ = 2-dehydropantoate + NADPH + H+ the enzyme follows a random addition mechanism in which the initial binding of NADPH is the kinetically preferred path, with a small degree of cooperativity between subunits. The mechanism of Staphylococcus aureus KPR is distinct from those of previously described members of the family of 2-hydroxyacid dehydrogenases