Contrary to its low clotting activity on fibrinogen,this enzyme showed ratherremarkable activity on the fluorogenic substrate Boc-Val-Pro-Arg-MCA which isspecific for thrombin,when compared with human thrombin.

• 蛇毒类凝血酶与人凝血酶一样,对专一萤光底物Boc-Val-Pro-Arg-MCA 都有明显活力,但其凝结血纤维蛋白原的活力却远低于人凝血酶。