1YWH image
Entry Detail
PDB ID:
1YWH
Title:
crystal structure of urokinase plasminogen activator receptor
Biological Source:
Source Organism:
PDB Version:
Deposition Date:
2005-02-18
Release Date:
2005-05-10
Method Details:
Experimental Method:
Resolution:
2.70 Å
R-Value Free:
0.31
R-Value Work:
0.24
R-Value Observed:
0.24
Space Group:
P 1 21 1
Macromolecular Entities
Polymer Type:polypeptide(L)
Description:Urokinase plasminogen activator surface receptor
Chain IDs:A, C, E, G, I, K, M, O
Chain Length:313
Number of Molecules:8
Biological Source:Homo sapiens
Modified Residue
Compound ID Chain ID Parent Comp ID Details 2D Image
ALC B ALA 2-AMINO-3-CYCLOHEXYL-PROPIONIC ACID
ASN A ASN GLYCOSYLATION SITE
DLY B LYS D-LYSINE
DSN B SER D-SERINE
Primary Citation
Crystal structure of the human urokinase plasminogen activator receptor bound to an antagonist peptide
EMBO J. 24 1655 1663 (2005)
PMID: 15861141 DOI: 10.1038/sj.emboj.7600635

Abstact

We report the crystal structure of a soluble form of human urokinase-type plasminogen activator receptor (uPAR/CD87), which is expressed at the invasive areas of the tumor-stromal microenvironment in many human cancers. The structure was solved at 2.7 A in association with a competitive peptide inhibitor of the urokinase-type plasminogen activator (uPA)-uPAR interaction. uPAR is composed of three consecutive three-finger domains organized in an almost circular manner, which generates both a deep internal cavity where the peptide binds in a helical conformation, and a large external surface. This knowledge combined with the discovery of a convergent binding motif shared by the antagonist peptide and uPA allowed us to build a model of the human uPA-uPAR complex. This model reveals that the receptor-binding module of uPA engages the uPAR central cavity, thus leaving the external receptor surface accessible for other protein interactions (vitronectin and integrins). By this unique structural assembly, uPAR can orchestrate the fine interplay with the partners that are required to guide uPA-focalized proteolysis on the cell surface and control cell adhesion and migration.

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