1p0s

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{{STRUCTURE_1p0s| PDB=1p0s | SCENE= }}
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==Crystal Structure of Blood Coagulation Factor Xa in Complex with Ecotin M84R==
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===Crystal Structure of Blood Coagulation Factor Xa in Complex with Ecotin M84R===
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<StructureSection load='1p0s' size='340' side='right' caption='[[1p0s]], [[Resolution|resolution]] 2.80&Aring;' scene=''>
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{{ABSTRACT_PUBMED_12834348}}
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== Structural highlights ==
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<table><tr><td colspan='2'>[[1p0s]] is a 3 chain structure with sequence from [http://en.wikipedia.org/wiki/Escherichia_coli Escherichia coli] and [http://en.wikipedia.org/wiki/Homo_sapiens Homo sapiens]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1P0S OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=1P0S FirstGlance]. <br>
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</td></tr><tr><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat"><scene name='pdbligand=MG:MAGNESIUM+ION'>MG</scene>, <scene name='pdbligand=NA:SODIUM+ION'>NA</scene><br>
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<tr><td class="sblockLbl"><b>[[Non-Standard_Residue|NonStd Res:]]</b></td><td class="sblockDat"><scene name='pdbligand=CGU:GAMMA-CARBOXY-GLUTAMIC+ACID'>CGU</scene></td></tr>
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<tr><td class="sblockLbl"><b>[[Gene|Gene:]]</b></td><td class="sblockDat">ECO OR ETI OR B2209 ([http://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=562 Escherichia coli])</td></tr>
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<tr><td class="sblockLbl"><b>Activity:</b></td><td class="sblockDat"><span class='plainlinks'>[http://en.wikipedia.org/wiki/Coagulation_factor_Xa Coagulation factor Xa], with EC number [http://www.brenda-enzymes.info/php/result_flat.php4?ecno=3.4.21.6 3.4.21.6] </span></td></tr>
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<tr><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=1p0s FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1p0s OCA], [http://www.rcsb.org/pdb/explore.do?structureId=1p0s RCSB], [http://www.ebi.ac.uk/pdbsum/1p0s PDBsum]</span></td></tr>
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<table>
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== Disease ==
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[[http://www.uniprot.org/uniprot/FA10_HUMAN FA10_HUMAN]] Defects in F10 are the cause of factor X deficiency (FA10D) [MIM:[http://omim.org/entry/227600 227600]]. A hemorrhagic disease with variable presentation. Affected individuals can manifest prolonged nasal and mucosal hemorrhage, menorrhagia, hematuria, and occasionally hemarthrosis. Some patients do not have clinical bleeding diathesis.<ref>PMID:2790181</ref> <ref>PMID:1973167</ref> <ref>PMID:1985698</ref> <ref>PMID:7669671</ref> <ref>PMID:8529633</ref> <ref>PMID:7860069</ref> <ref>PMID:8845463</ref> <ref>PMID:8910490</ref> <ref>PMID:10468877</ref> <ref>PMID:10746568</ref> <ref>PMID:10739379</ref> <ref>PMID:11248282</ref> <ref>PMID:11728527</ref> <ref>PMID:12945883</ref> <ref>PMID:15650540</ref> <ref>PMID:17393015</ref> <ref>PMID:19135706</ref>
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== Function ==
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[[http://www.uniprot.org/uniprot/FA10_HUMAN FA10_HUMAN]] Factor Xa is a vitamin K-dependent glycoprotein that converts prothrombin to thrombin in the presence of factor Va, calcium and phospholipid during blood clotting. [[http://www.uniprot.org/uniprot/ECOT_ECOLI ECOT_ECOLI]] General inhibitor of pancreatic serine proteases: inhibits chymotrypsin, trypsin, elastases, factor X, kallikrein as well as a variety of other proteases. The strength of inhibition does not appear to be correlated with a particular protease specificity.[HAMAP-Rule:MF_00706]
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== Evolutionary Conservation ==
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[[Image:Consurf_key_small.gif|200px|right]]
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Check<jmol>
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<jmolCheckbox>
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<scriptWhenChecked>select protein; define ~consurf_to_do selected; consurf_initial_scene = true; script "/wiki/ConSurf/p0/1p0s_consurf.spt"</scriptWhenChecked>
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<scriptWhenUnchecked>script /wiki/extensions/Proteopedia/spt/initialview01.spt</scriptWhenUnchecked>
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<text>to colour the structure by Evolutionary Conservation</text>
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</jmolCheckbox>
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</jmol>, as determined by [http://consurfdb.tau.ac.il/ ConSurfDB]. You may read the [[Conservation%2C_Evolutionary|explanation]] of the method and the full data available from [http://bental.tau.ac.il/new_ConSurfDB/chain_selection.php?pdb_ID=2ata ConSurf].
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<div style="clear:both"></div>
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<div style="background-color:#fffaf0;">
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== Publication Abstract from PubMed ==
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The serine protease factor Xa (FXa) is inhibited by ecotin with picomolar affinity. The structure of the tetrameric complex of ecotin variant M84R (M84R) with FXa has been determined to 2.8 A. Substrate directed induced fit of the binding interactions at the S2 and S4 pockets modulates the discrimination of the protease. Specifically, the Tyr at position 99 of FXa changes its conformation with respect to incoming ligand, changing the size of the S2 and S4 pockets. The role of residue 192 in substrate and inhibitor recognition is also examined. Gln 192 from FXa forms a hydrogen bond with the P2 carbonyl group of ecotin. This confirms previous biochemical and structural analyses on thrombin and activated protein C, which suggested that residue 192 may play a more general role in mediating the interactions between coagulation proteases and their inhibitors. The structure of ecotin M84R-FXa (M84R-FXa) also reveals the structure of the Gla domain in the presence of Mg(2+). The first 11 residues of the domain assume a novel conformation and likely represent an intermediate folding state of the domain.
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==Disease==
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The extended interactions and Gla domain of blood coagulation factor Xa.,Wang SX, Hur E, Sousa CA, Brinen L, Slivka EJ, Fletterick RJ Biochemistry. 2003 Jul 8;42(26):7959-66. PMID:12834348<ref>PMID:12834348</ref>
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[[http://www.uniprot.org/uniprot/FA10_HUMAN FA10_HUMAN]] Defects in F10 are the cause of factor X deficiency (FA10D) [MIM:[http://omim.org/entry/227600 227600]]. A hemorrhagic disease with variable presentation. Affected individuals can manifest prolonged nasal and mucosal hemorrhage, menorrhagia, hematuria, and occasionally hemarthrosis. Some patients do not have clinical bleeding diathesis.<ref>PMID:2790181</ref><ref>PMID:1973167</ref><ref>PMID:1985698</ref><ref>PMID:7669671</ref><ref>PMID:8529633</ref><ref>PMID:7860069</ref><ref>PMID:8845463</ref><ref>PMID:8910490</ref><ref>PMID:10468877</ref><ref>PMID:10746568</ref><ref>PMID:10739379</ref><ref>PMID:11248282</ref><ref>PMID:11728527</ref><ref>PMID:12945883</ref><ref>PMID:15650540</ref><ref>PMID:17393015</ref><ref>PMID:19135706</ref>
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==Function==
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From MEDLINE&reg;/PubMed&reg;, a database of the U.S. National Library of Medicine.<br>
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[[http://www.uniprot.org/uniprot/FA10_HUMAN FA10_HUMAN]] Factor Xa is a vitamin K-dependent glycoprotein that converts prothrombin to thrombin in the presence of factor Va, calcium and phospholipid during blood clotting. [[http://www.uniprot.org/uniprot/ECOT_ECOLI ECOT_ECOLI]] General inhibitor of pancreatic serine proteases: inhibits chymotrypsin, trypsin, elastases, factor X, kallikrein as well as a variety of other proteases. The strength of inhibition does not appear to be correlated with a particular protease specificity.[HAMAP-Rule:MF_00706]
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</div>
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==About this Structure==
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[[1p0s]] is a 3 chain structure with sequence from [http://en.wikipedia.org/wiki/Escherichia_coli Escherichia coli] and [http://en.wikipedia.org/wiki/Homo_sapiens Homo sapiens]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1P0S OCA].
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==See Also==
==See Also==
*[[Ecotin|Ecotin]]
*[[Ecotin|Ecotin]]
*[[Factor Xa|Factor Xa]]
*[[Factor Xa|Factor Xa]]
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== References ==
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==Reference==
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<references/>
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<ref group="xtra">PMID:012834348</ref><references group="xtra"/><references/>
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__TOC__
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</StructureSection>
[[Category: Coagulation factor Xa]]
[[Category: Coagulation factor Xa]]
[[Category: Escherichia coli]]
[[Category: Escherichia coli]]

Revision as of 16:27, 29 September 2014

Crystal Structure of Blood Coagulation Factor Xa in Complex with Ecotin M84R

1p0s, resolution 2.80Å

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