Purity: > 90% by SDS - PAGE Format: Liquid. In 20mM Tris-HCl buffer (pH 7.5) containing 1mM DTT, 0.2M NaCl, 50% Glycerol. Sepsecs, also known as O-phosphoseryl-tRNA (Sec) selenium transferase, catalyzes the final step of sec synthesis by converting O-phosphoseryl-tRNA (sec) to selenocysteinyl-tRNA (sec) using selenophosphate as the selenium donor. Also, this protein is considered a specific marker of autoimmune hepatitis. Recombinant mouse Sepsecs protein, fused to His-tag at N-terminus, was expressed in E.coli and purified by using conventional chromatography techniques.