1.5.1.25 additional information the enzyme uses NADH and NADPH as reductant about equally well 743355 1.5.1.25 NAD+ - 743355 1.5.1.25 NADH - 743355 1.5.1.25 NADH NADH and NADPH show equal activity with cystathionine ketimine as substrate. Reduction of lanthionine ketimine with NADPH is faster than reduction with NADH. Reduction of S-aminoethylcysteine with NADH is faster than reduction with NADPH 440358 1.5.1.25 NADH reduction rate for cystathionine ketimine, lanthionine ketimine and DELTA1-piperidine 2-carboxylate is higher with NADPH than with NADH. Reduction rate for S-aminoethylcysteine with NADH is higher than with NADPH 440359 1.5.1.25 NADP+ - 743355 1.5.1.25 NADPH - 741580, 741584, 743354, 743355 1.5.1.25 NADPH NADH and NADPH show equal activity with cystathionine ketimine as substrate. Reduction of lanthionine ketimine with NADPH is faster than reduction with NADH. Reduction of S-aminoethylcysteine with NADH is faster than reduction with NADPH 440358 1.5.1.25 NADPH reduction rate for cystathionine ketimine, lanthionine ketimine and DELTA1-piperidine 2-carboxylate is higher with NADPH than with NADH. Reduction rate for S-aminoethylcysteine with NADH is higher than with NADPH 440359 1.5.1.25 pyridoxal 5'-phosphate - 743355