EOG8JDKPN	GO:0044205	1/5	'de novo' UMP biosynthetic process	biological_process	"The chemical reactions and pathways resulting in the formation of UMP, uridine monophosphate, starting with the synthesis of (S)-dihydroorotate from bicarbonate; UMP biosynthesis may either occur via reduction by quinone, NAD(+) or oxygen." [GOC:ecd, GOC:jl]
EOG8JDKPN	GO:0006207	1/5	'de novo' pyrimidine nucleobase biosynthetic process	biological_process	"The chemical reactions and pathways resulting in the formation of pyrimidine nucleobases, 1,3-diazine, organic nitrogenous bases, beginning with the synthesis of a pyrimidine ring from simpler precursors." [GOC:mah, ISBN:0716720094]
EOG8JDKPN	GO:0004590	1/5	orotidine-5'-phosphate decarboxylase activity	molecular_function	"Catalysis of the reaction: H(+) + orotidine 5'-phosphate = CO(2) + UMP." [EC:4.1.1.23, RHEA:11599]