Cytosine deaminase
In enzymology, a cytosine deaminase is an enzyme that catalyzes the chemical reaction
cytosine + H₂O \rightleftharpoons uracil + NH₃
Thus, the two substrates of this enzyme are cytosine and H₂O, whereas its two products are uracil and NH₃. Wikipedia
Gene Ontology: AmiGO / QuickGO