2.6.1.18 beta-alanine + pyruvate 2.6.1.18 L-alanine + 3-oxopropanoate 2.6.1.18 L-beta-amino-n-butyric acid + pyruvate 2.6.1.18 pyruvate + beta-alanine 2.6.1.18 pyruvate + beta-phenylalanine