it can use nadh ( vmax./km 3.36 s-1 ) and nadph ( vmax./km 1.07 s-1 ) when 6-methyldihydro- ( 6h ) -pterin is the second substrate , as well as quinonoid dihydro- ( 6h ) -biopterin ( vmax./km 0.69 s-1 ) , dihydro- ( 6h ) -neopterin ( vmax./km 0.58 s-1 ) , dihydro- ( 6h ) -monapterin 0.66 s-1 ) , 6-methyldihydro- ( 6h ) -pterin and cis-6,7-dimethyldihydro- ( 6h ) -pterin ( vmax./km 0.66 s-1 ) when nadh is the second substrate .
C0005562
biopterin
C0068527
neopterin