6.3.4.2 Metabolic pathways - 01100 - 6.3.4.2 Pyrimidine metabolism - 00240 - 6.3.4.2 pyrimidine metabolism pyrimidine metabolism - - 6.3.4.2 UTP and CTP de novo biosynthesis - - PWY-7176 6.3.4.2 UTP and CTP dephosphorylation I - - PWY-7185 6.3.4.2 UTP and CTP dephosphorylation II - - PWY-7177