Tags: Protein.
Cytidine deaminase is an enzyme that in humans is encoded by the CDA gene.This gene encodes an enzyme involved in pyrimidine salvaging. The encoded protein forms a homotetramer that catalyzes the irreversible hydrolytic deamination of cytidine and deoxycytidine to uridine and deoxyuridine respectively. It is one of several deaminases responsible for maintaining the cellular pyrimidine pool.