Purity: > 90% by SDS - PAGE Format: Liquid. In Phosphate Buffered Saline (pH 7.4) containing 10% glycerol.. DCT, as known as L-dopachrome tautomerase isoform 1, is the tyrosinase family members. This protein plays a key role in the synthesis of the melanin pigment including tyrosinase (Tyr), tyrosinase-related protein 1 (Tyrp1). These are strongly implicated in eumelanin synthesis. The switch between the eumelanin and the pheomelanin pathways is thought to depend on the presence of cysteine. Thus, in the absence of cysteine, dopaquinone, the product of tyrosinase action, is transformed to cyclodopa (leucodopachrome) and then to dopachrome (and DOPA). Recombinant human DCT, fused to His-tag at C-terminus, was expressed in insect cell and purified by using conventional chromatography techniques.