2.7.4.8 dZTP biosynthesis - - PWY-8289 2.7.4.8 guanosine ribonucleotides de novo biosynthesis - - PWY-7221 2.7.4.8 Metabolic pathways - 01100 - 2.7.4.8 Purine metabolism - 00230 - 2.7.4.8 purine metabolism purine metabolism - -