1lmw
From Proteopedia
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| - | [[Image:1lmw.gif|left|200px]] | + | [[Image:1lmw.gif|left|200px]] |
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| - | '''LMW U-PA STRUCTURE COMPLEXED WITH EGRCMK (GLU-GLY-ARG CHLOROMETHYL KETONE)''' | + | {{Structure |
| + | |PDB= 1lmw |SIZE=350|CAPTION= <scene name='initialview01'>1lmw</scene>, resolution 2.5Å | ||
| + | |SITE= | ||
| + | |LIGAND= | ||
| + | |ACTIVITY= [http://en.wikipedia.org/wiki/U-plasminogen_activator U-plasminogen activator], with EC number [http://www.brenda-enzymes.info/php/result_flat.php4?ecno=3.4.21.73 3.4.21.73] | ||
| + | |GENE= | ||
| + | }} | ||
| + | |||
| + | '''LMW U-PA STRUCTURE COMPLEXED WITH EGRCMK (GLU-GLY-ARG CHLOROMETHYL KETONE)''' | ||
| + | |||
==Overview== | ==Overview== | ||
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==About this Structure== | ==About this Structure== | ||
| - | 1LMW is a [ | + | 1LMW is a [[Single protein]] structure of sequence from [http://en.wikipedia.org/wiki/Homo_sapiens Homo sapiens]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1LMW OCA]. |
==Reference== | ==Reference== | ||
| - | The crystal structure of the catalytic domain of human urokinase-type plasminogen activator., Spraggon G, Phillips C, Nowak UK, Ponting CP, Saunders D, Dobson CM, Stuart DI, Jones EY, Structure. 1995 Jul 15;3(7):681-91. PMID:[http:// | + | The crystal structure of the catalytic domain of human urokinase-type plasminogen activator., Spraggon G, Phillips C, Nowak UK, Ponting CP, Saunders D, Dobson CM, Stuart DI, Jones EY, Structure. 1995 Jul 15;3(7):681-91. PMID:[http://www.ncbi.nlm.nih.gov/pubmed/8591045 8591045] |
[[Category: Homo sapiens]] | [[Category: Homo sapiens]] | ||
[[Category: Single protein]] | [[Category: Single protein]] | ||
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[[Category: trypsin-like serine protease]] | [[Category: trypsin-like serine protease]] | ||
| - | ''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Thu | + | ''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Thu Mar 20 12:32:41 2008'' |
Revision as of 10:32, 20 March 2008
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| , resolution 2.5Å | |||||||
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| Activity: | U-plasminogen activator, with EC number 3.4.21.73 | ||||||
| Coordinates: | save as pdb, mmCIF, xml | ||||||
LMW U-PA STRUCTURE COMPLEXED WITH EGRCMK (GLU-GLY-ARG CHLOROMETHYL KETONE)
Contents |
Overview
BACKGROUND: Urokinase-type plasminogen activator (u-PA) promotes fibrinolysis by catalyzing the conversion of plasminogen to the active protease plasmin via the cleavage of a peptide bond. When localized to the external cell surface it contributes to tissue remodelling and cellular migration; inhibition of its activity impedes the spread of cancer. u-PA has three domains: an N-terminal receptor-binding growth factor domain, a central kringle domain and a C-terminal catalytic protease domain. The biological roles of the fibrinolytic enzymes render them therapeutic targets, however, until now no structure of the protease domain has been available. Solution of the structure of the u-PA serine protease was undertaken to provide such data. RESULTS: The crystal structure of the catalytic domain of recombinant, non-glycosylated human u-PA, complexed with the inhibitor Glu-Gly-Arg chloromethyl ketone (EGRcmk), has been determined at a nominal resolution of 2.5 A and refined to a crystallographic R-factor of 22.4% on all data (20.4% on data > 3 sigma). The enzyme has the expected topology of a trypsin-like serine protease. CONCLUSIONS: The enzyme has an S1 specificity pocket similar to that of trypsin, a restricted, less accessible, hydrophobic S2 pocket and a solvent-accessible S3 pocket which is capable of accommodating a wide range of residues. The EGRcmk inhibitor binds covalently at the active site to form a tetrahedral hemiketal structure. Although the overall structure is similar to that of homologous serine proteases, at six positions insertions of extra residues in loop regions create unique surface areas. One of these loop regions is highly mobile despite being anchored by the disulphide bridge which is characteristic of a small subset of serine proteases namely tissuetype plasminogen activator, Factor XII and Complement Factor I.
Disease
Known disease associated with this structure: Alzheimer disease, late-onset, susceptibility to OMIM:[191840]
About this Structure
1LMW is a Single protein structure of sequence from Homo sapiens. Full crystallographic information is available from OCA.
Reference
The crystal structure of the catalytic domain of human urokinase-type plasminogen activator., Spraggon G, Phillips C, Nowak UK, Ponting CP, Saunders D, Dobson CM, Stuart DI, Jones EY, Structure. 1995 Jul 15;3(7):681-91. PMID:8591045
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