the nadph-dependent enzyme mediates the reductive condensation between pyruvic acid and the delta- or epsilon-amino groups of l-ornithine and l-lysine to form n5- ( l-1-carboxyethyl ) -l-ornithine and n6- ( l-1-carboxyethyl ) -l-lysine , respectively .
C0029277
ornithine
C0887117
l-ornithine