Purity: > 90% by SDS - PAGE Format: Liquid. In 20 mM Tris-HCl buffer (pH8.0) containing 0.1M NaCl, 1mM DTT, 20% glycerol . DCTD (deoxycytidylate deaminase), also known as dCMP deaminase, is a 178 amino acid allosteric enzyme that exists as a homohexamer and belongs to the cytidine and deoxycytidylate deaminase protein family. using zinc as a cofactor, DCTD catalyzes the deamination of dCMP to duMP, thereby producing the nucleotide substrate (duMP) that is used by thymidylate synthase. Recombinant human DCTD protein, fused to His-tag at N-terminus, was expressed in E.coli and purified by using conventional chromatography techniques