Purity: > 95% by SDS - PAGE Format: Liquid. 20mM Tris-HCl buffer (pH8.0) containing 10% glycerol, 0.1M NaCl. A2LD1, also known as gamma-glutamylaminecyclotransferase, is an enzyme that converts gamma-glutamylamines to free amines and 5-oxoproline. It shows high activity toward gamma-glutamyl-epsilon-lysine, derived from the breakdown of fibrin and other proteins cross-linked by transglutaminases. This protein adopts the newly identified cyclotransferase fold, observed in gamma-glutamylcyclotransferase, an enzyme with activity toward gamma-glutamyl-alpha-amino acids. Recombinant human A2LD1 protein, fused to His-tag at N-terminus, was expressed in E.coli and purified by using conventional chromatography.