Human plasminogen catalytic domain undergoes an unusual conformational change upon activation.
Human plasminogen catalytic domain undergoes an unusual conformational change upon activation.
复制标题
人纤溶酶原催化结构域在激活后会经历不寻常的构象变化。
DOI:
10.1006/jmbi.1999.3397
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发表时间:
2000
期刊:
影响因子:
--
通讯作者:
Zhang,XC
中科院分区:
文献类型:
--
作者:
Wang,X;Terzyan,S;Tang,J;Loy,JA;Lin,X;Zhang,XC
Activation of the serine protease plasmin from its zymogen, plasminogen, is the key step in fibrinolysis leading to blood clot dissolution. It also plays critical roles in cell migration, such as in tumor metastasis. Here, we report the crystal structure of an inactive S741A mutant of human plasminogen catalytic domain at 2.0 Å resolution. This structure permits a direct comparison with that of the plasmin catalytic unit. Unique conformational differences are present between these two structures that are not seen in other zymogen-enzyme pairs of the trypsin family. The functional significance of these differences and the structural basis of plasminogen activation is discussed in the light of this new structure.
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