2.6.1.18 alanine metabolism alanine metabolism - - 2.6.1.18 beta-alanine biosynthesis II - - PWY-3941 2.6.1.18 beta-alanine degradation II - - PWY-1781 2.6.1.18 beta-Alanine metabolism - 00410 - 2.6.1.18 Metabolic pathways - 01100 - 2.6.1.18 Propanoate metabolism - 00640 - 2.6.1.18 Valine, leucine and isoleucine degradation - 00280 -