生物活性方面,Epsilon-(γ-谷氨酰基)-赖氨酸是N(6)-酰氧-L-赖氨酸的衍生物。在某些疾病中,如非糖尿病肾病和青光眼,组织转谷氨酰胺酶(tTg)促使细胞外基质成分之间形成更多Epsilon-(γ-谷氨酰基)-赖氨酸键。
gamma-Glutamylamine cyclotransferase, an enzyme that catalyzes the conversion of L-gamma-glutamylamines to free amines and 5-oxo-L-proline, was found in rabbit kidney and in various other tissues. The specificity of this enzyme indicates that it functions in the metabolism of products of transglutaminase action; among its substrates are epsilon-(L-gamma-glutamyl)-L-lysine, a derivative of this peptide in which the alpha-amino and carboxyl groups of the lysine moiety are blocked, and L-gamma-glutamyl-polyamine derivatives.