The results indicate that the biological characteristics of ATF PAI2CD were very similar to those of the wide type PAI 2 (or mutants PAI 2, PAI 2CD) and to pro uPA in binding to uPAR bearing cells.

• 双功能融合蛋白质的纤溶抑制活性与野生型PAI 2 (或PAI 2突变体 ,PAI 2CD)基本一致 ,与肿瘤细胞表面的uPA受体的结合能力同pro uPA。