1dva

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(New page: 200px<br /> <applet load="1dva" size="450" color="white" frame="true" align="right" spinBox="true" caption="1dva, resolution 3.00&Aring;" /> '''CRYSTAL STRUCTURE O...)
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Revision as of 14:29, 12 November 2007

Image:1dva.gif

1dva, resolution 3.00Å

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CRYSTAL STRUCTURE OF THE COMPLEX BETWEEN THE PEPTIDE EXOSITE INHIBITOR E-76 AND COAGULATION FACTOR VIIA

Contents

Overview

Potent anticoagulants have been derived by targeting the tissue, factor-factor VIIa complex with naive peptide libraries displayed on M13, phage. The peptides specifically block the activation of factor X with a, median inhibitory concentration of 1 nM and selectively inhibit, tissue-factor-dependent clotting. The peptides do not bind to the active, site of factor VIIa; rather, they work by binding to an exosite on the, factor VIIa protease domain, and non-competitively inhibit activation of, factor X and amidolytic activity. One such peptide (E-76) has a well, defined structure in solution determined by NMR spectroscopy that is, similar to the X-ray crystal structure when complexed with factor VIIa., These structural and functional studies indicate an allosteric 'switch', mechanism of inhibition involving an activation loop of factor VIIa and, represent a new framework for developing inhibitors of serine proteases.

Disease

Known diseases associated with this structure: Factor VII deficiency OMIM:[227500], Myocardial infarction, decreased susceptibility to OMIM:[227500]

About this Structure

1DVA is a Single protein structure of sequence from Homo sapiens with GLC, FUC, FUL, CA, CAC, ACE and CH2 as ligands. Active as Coagulation factor VIIa, with EC number 3.4.21.21 Full crystallographic information is available from OCA.

Reference

Peptide exosite inhibitors of factor VIIa as anticoagulants., Dennis MS, Eigenbrot C, Skelton NJ, Ultsch MH, Santell L, Dwyer MA, O'Connell MP, Lazarus RA, Nature. 2000 Mar 30;404(6777):465-70. PMID:10761907

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