2.3.1.37 2-amino-3-hydroxycyclopent-2-enone biosynthesis - - PWY-7536 2.3.1.37 Biosynthesis of secondary metabolites - 01110 - 2.3.1.37 Glycine, serine and threonine metabolism - 00260 - 2.3.1.37 heme metabolism heme metabolism - - 2.3.1.37 Metabolic pathways - 01100 - 2.3.1.37 Porphyrin and chlorophyll metabolism - 00860 - 2.3.1.37 tetrapyrrole biosynthesis II (from glycine) - - PWY-5189