2-hydroxy-4-aminobutanoate => (S)-azetidine-2-carboxylate + H2O
2-hydroxy-4-aminobutanoate => (s)-azetidine-2-carboxylate + h2o
2-hydroxy-4-aminobutanoate => (S)-azetidine-2-carboxylate + H2O
2-hydroxy-4-aminobutanoate => (s)-azetidine-2-carboxylate + h2o