1.5.3.16 alanine metabolism alanine metabolism - - 1.5.3.16 Arginine and proline metabolism - 00330 - 1.5.3.16 beta-alanine biosynthesis IV - - PWY-5760 1.5.3.16 beta-Alanine metabolism - 00410 - 1.5.3.16 Metabolic pathways - 01100 - 1.5.3.16 spermine and spermidine degradation I - - PWY-6117 1.5.3.16 spermine and spermidine degradation III - - PWY-6441