Description: Abz-Val-Ala-Asp-Nva-Arg-Asp-Arg-Gln-EDDnp serves as a fluorescence-quenched peptide substrate specifically designed for the enzyme human proteinase 3 (k cat /K m = 1,570 mM -1 s -1 ). It is utilized to detect the activity of proteinase 3 (PR3).