– D-dopachrome tautomerase (D-DT) is a newly described cytokine and a member of the macrophage migration inhibitory factor (MIF) protein superfamily.The D-DT protein also is present in most tissues and circulates in serum at similar concentrations as MIF. D-DT binds the MIF cell surface receptor complex, CD74/CD44, with high affinity and induces similar cell signaling and effector functions. DDT Protein, Human, Recombinant (His) is expressed in E. coli expression system with N-His tag. The predicted molecular weight is 13.94 kDa and the accession number is P30046-1.