Structure of human urokinase plasminogen activator in complex with its receptor |
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Authors: | Huai Qing Mazar Andrew P Kuo Alice Parry Graham C Shaw David E Callahan Jennifer Li Yongdong Yuan Cai Bian Chuanbing Chen Liqing Furie Bruce Furie Barbara C Cines Douglas B Huang Mingdong |
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Institution: | Division of Hemostasis and Thrombosis, Center for Vascular Biology Research, Beth Israel Deaconess Medical Center and Harvard Medical School, Boston, MA 02215, USA. |
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Abstract: | The urokinase plasminogen activator binds to its cellular receptor with high affinity and initiates signaling cascades that are implicated in pathological processes including tumor growth, metastasis, and inflammation. We report the crystal structure at 1.9 angstroms of the urokinase receptor complexed with the urokinase amino-terminal fragment and an antibody against the receptor. The three domains of urokinase receptor form a concave shape with a central cone-shaped cavity where the urokinase fragment inserts. The structure provides insight into the flexibility of the urokinase receptor that enables its interaction with a wide variety of ligands and a basis for the design of urokinase-urokinase receptor antagonists. |
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