4.2.1.108 0.02 - N-alpha-acetyl-L-2,4-diaminobutanoate pH 8.5, 15°C, recombinant enzyme 749081 4.2.1.108 1.47 - (2S)-4-acetamido-2-aminobutanoate pH 8.5, 15°C, recombinant enzyme 749081