ID   3.5.4.1
DE   cytosine deaminase.
AN   Cytosine aminohydrolase.
CA   cytosine + H2O + H(+) = uracil + NH4(+).
CC   -!- Also acts on 5-methylcytosine.
DR   P25524, CODA_ECOLI ;  P78594, FCA1_CANAL ;  Q12178, FCY1_YEAST ;
DR   O59834, FCYS_SCHPO ;
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