活力：≥2.0 units\/mg protein 活力定义：One unit will produce one μmole of p-Nitroanilide from D-Val-Leu-Lys-p-Nitroanilide per minute at pH 7.5 at 37 °C. 性状：Lyophilized powder containing sodium phosphate, mannitol, and NaCl. pH Optimum: 8.5 pH 7.5: ~40% of maximal activity, pH 9.5: ~50% of maximal activity Temperature Optimum: 37 °C with rapid inactivation at 56 °C\n储存条件： -20℃\n用途： Plasmin exhibits preferential cleavage at the carboxyl side of lysine and arginine residues with higher selectivity than trypsin. Converts polymerized fibrin into soluble products.