5.4.3.8 0.077 - (S)-4-Amino-5-oxopentanoate gabaculine-resistant mutant enzyme 3430 5.4.3.8 0.11 - (S)-4-Amino-5-oxopentanoate - 3427 5.4.3.8 0.47 - (S)-4-Amino-5-oxopentanoate wild-type enzyme 3430 5.4.3.8 0.95 - (S)-4-Amino-5-oxopentanoate - 3441