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1mtu

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{{STRUCTURE_1mtu| PDB=1mtu | SCENE= }}
{{STRUCTURE_1mtu| PDB=1mtu | SCENE= }}
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'''FACTOR XA SPECIFIC INHIBITOR IN COMPLEX WITH BOVINE TRYPSIN'''
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===FACTOR XA SPECIFIC INHIBITOR IN COMPLEX WITH BOVINE TRYPSIN===
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==Overview==
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Crystal structures of DX9065a and a related bisamidino-aryl inhibitor specific for the blood-clotting factor Xa have been solved in complex with bovine beta-trypsin to a resolution of 1.9 A. Each inhibitor exhibits an extended conformation along the active site, in contrast to the compact folded structures observed for thrombin specific inhibitors. Few direct contacts (predominantly in the S1 pocket) are made between trypsin and the inhibitors. Transfer of the inhibitors to the active site of factor Xa suggests a three-site interaction: salt bridge formation at the base of the primary specificity pocket, extensive hydrophobic surface burial and a weak electrostatic interaction between the distal basic component of the inhibitor and an electronegative cavity of factor Xa formed by three backbone carbonyl oxygens. Additivity of these three interactions is the basis for the observed strong inhibition of factor Xa and provides a framework for the design of novel factor Xa inhibitors. A propionic acid group of the inhibitor would clash with the thrombin specific '60-insertion loop', thus conferring selectivity against thrombin.
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(as it appears on PubMed at http://www.pubmed.gov), where 7498454 is the PubMed ID number.
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{{ABSTRACT_PUBMED_7498454}}
==About this Structure==
==About this Structure==
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[[Category: Hydrolase]]
[[Category: Hydrolase]]
[[Category: Serine protease]]
[[Category: Serine protease]]
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''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Sat May 3 01:42:30 2008''
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''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Mon Jul 28 16:51:11 2008''

Revision as of 13:51, 28 July 2008

Image:1mtu.png

Template:STRUCTURE 1mtu

FACTOR XA SPECIFIC INHIBITOR IN COMPLEX WITH BOVINE TRYPSIN

Template:ABSTRACT PUBMED 7498454

About this Structure

1MTU is a Single protein structure of sequence from Bos taurus. Full crystallographic information is available from OCA.

Reference

Crystal structures of factor Xa specific inhibitors in complex with trypsin: structural grounds for inhibition of factor Xa and selectivity against thrombin., Stubbs MT, Huber R, Bode W, FEBS Lett. 1995 Nov 13;375(1-2):103-7. PMID:7498454

Page seeded by OCA on Mon Jul 28 16:51:11 2008

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