1.3.7.3 Porphyrin and chlorophyll metabolism - 00860 - 1.3.7.3 Biosynthesis of secondary metabolites - 01110 - 1.3.7.3 phycoerythrobilin biosynthesis I - - PWY-5915 1.3.7.3 phycourobilin biosynthesis - - PWY-7579