Noun
ribosyl (plural ribosyls)
(organic chemistry) any univalent radical derived from ribose
Pyrimidines are synthesized first from aspartate and carbamoyl-phosphate in the cytoplasm to the common precursor ring structure orotic acid, onto which a phosphorylated ribosyl unit is covalently linked. Source: Internet
The net reaction is: :(S)-Dihydroorotate + O 2 → Orotate + H 2 O 2 Orotate is covalently linked with a phosphorylated ribosyl unit. Source: Internet