-Ureidopropionic Acid![]()
-Ureidopropionic acid is an intermediate in pyrimidine nucleotide
catabolism. Nucleoside phosphorylases act, as shown here
to yield a base and ribose-1-phosphate.
If bases or nucleosides are not reused for nucleic acid synthesis
via salvage pathways, the bases are further degraded to uric acid (purines) or
-ureidopropionate (pyrimidines).
1. Dihydrouracil + H2O <=>
-Ureidopropionic Acid (catalyzed by Hydropyrimidine Hydratase)
2.
-Ureidopropionic Acid + H2O <=>
Alanine + NH4+ + CO2 (catalyzed by
-Ureidopropionase)