1cvw

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[[Image:1cvw.jpg|left|200px]]<br /><applet load="1cvw" size="350" color="white" frame="true" align="right" spinBox="true"
 
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caption="1cvw, resolution 2.28&Aring;" />
 
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'''CRYSTAL STRUCTURE OF ACTIVE SITE-INHIBITED HUMAN COAGULATION FACTOR VIIA (DES-GLA)'''<br />
 
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==Overview==
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==Crystal structure of active site-inhibited human coagulation factor VIIA (DES-GLA)==
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Factor VIIa (FVIIa) is a crucial haemostatic protease consisting of four, distinct domains termed the Gla, epidermal growth factor-1 (EGF-1), EGF-2, and protease domains (from N- to C-terminus). The crystal structure of, human FVIIa inhibited at the active site with 1, 5-dansyl-Glu-Gly-Arg-chloromethyl ketone and lacking the Gla domain has, been solved to a resolution of 2.28 A. The EGF-2 and protease domains were, well resolved, whereas no electron density for the EGF-1 domain was, observed, suggesting a flexible arrangement or disorder within the, crystal. Superposition of the protease domain of the present structure, with that previously resolved in the tissue factor (TF)/FVIIai complex, revealed that although overall the domain structures are similar, the, EGF-2 domain is rotated by 7.5 degrees relative to the protease domain on, binding TF. A single cleavage in the protease domain was found, between, Arg315 and Lys316 (chymotrypsin numbering 170C-170D) in a FVII-specific, insertion loop: this cleavage appeared to be essential for, crystallisation. Insertion of the heavy chain N-terminal Ile153 is, essentially identical in the two structures, as is the geometry of the, active site residues and the inhibitor C-terminal arginine residue. Some, differences are seen in the cleaved loop, but changes in TF-contact, residues are generally minor. This structure supports the hypothesis that, TF binding enables spatial domain arrangements in the flexible FVIIa, molecule necessary for procoagulant function and furthermore that active, site occupancy induces FVIIa active conformation via N-terminal insertion.
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<StructureSection load='1cvw' size='340' side='right'caption='[[1cvw]], [[Resolution|resolution]] 2.28&Aring;' scene=''>
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== Structural highlights ==
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<table><tr><td colspan='2'>[[1cvw]] is a 2 chain structure with sequence from [https://en.wikipedia.org/wiki/Homo_sapiens Homo sapiens]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1CVW OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=1CVW FirstGlance]. <br>
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</td></tr><tr id='method'><td class="sblockLbl"><b>[[Empirical_models|Method:]]</b></td><td class="sblockDat" id="methodDat">X-ray diffraction, [[Resolution|Resolution]] 2.28&#8491;</td></tr>
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<tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=0GE:N-{[5-(DIMETHYLAMINO)NAPHTHALEN-1-YL]SULFONYL}-L-ALPHA-GLUTAMYL-N-[(2S,3S)-6-CARBAMIMIDAMIDO-1-CHLORO-2-HYDROXYHEXAN-3-YL]GLYCINAMIDE'>0GE</scene>, <scene name='pdbligand=CA:CALCIUM+ION'>CA</scene></td></tr>
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<tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[https://proteopedia.org/fgij/fg.htm?mol=1cvw FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1cvw OCA], [https://pdbe.org/1cvw PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=1cvw RCSB], [https://www.ebi.ac.uk/pdbsum/1cvw PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=1cvw ProSAT]</span></td></tr>
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</table>
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== Disease ==
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[https://www.uniprot.org/uniprot/FA7_HUMAN FA7_HUMAN] Defects in F7 are the cause of factor VII deficiency (FA7D) [MIM:[https://omim.org/entry/227500 227500]. A hemorrhagic disease with variable presentation. The clinical picture can be very severe, with the early occurrence of intracerebral hemorrhages or repeated hemarthroses, or, in contrast, moderate with cutaneous-mucosal hemorrhages (epistaxis, menorrhagia) or hemorrhages provoked by a surgical intervention. Finally, numerous subjects are completely asymptomatic despite very low factor VII levels.<ref>PMID:8043443</ref> <ref>PMID:2070047</ref> <ref>PMID:1634227</ref> <ref>PMID:8364544</ref> <ref>PMID:8204879</ref> <ref>PMID:7981691</ref> <ref>PMID:7974346</ref> <ref>PMID:8652821</ref> <ref>PMID:8844208</ref> <ref>PMID:8940045</ref> <ref>PMID:8883260</ref> <ref>PMID:9414278</ref> <ref>PMID:9576180</ref> <ref>PMID:9452082</ref> <ref>PMID:11091194</ref> <ref>PMID:11129332</ref> <ref>PMID:10862079</ref> <ref>PMID:12472587</ref> <ref>PMID:14717781</ref> <ref>PMID:19751712</ref> <ref>PMID:18976247</ref> <ref>PMID:19432927</ref> <ref>PMID:21206266</ref> <ref>PMID:21372693</ref>
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== Function ==
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[https://www.uniprot.org/uniprot/FA7_HUMAN FA7_HUMAN] Initiates the extrinsic pathway of blood coagulation. Serine protease that circulates in the blood in a zymogen form. Factor VII is converted to factor VIIa by factor Xa, factor XIIa, factor IXa, or thrombin by minor proteolysis. In the presence of tissue factor and calcium ions, factor VIIa then converts factor X to factor Xa by limited proteolysis. Factor VIIa will also convert factor IX to factor IXa in the presence of tissue factor and calcium.
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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/cv/1cvw_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/main_output.php?pdb_ID=1cvw ConSurf].
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<div style="clear:both"></div>
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==Disease==
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==See Also==
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Known diseases associated with this structure: Factor VII deficiency OMIM:[[http://www.ncbi.nlm.nih.gov/entrez/dispomim.cgi?id=227500 227500]], Myocardial infarction, decreased susceptibility to OMIM:[[http://www.ncbi.nlm.nih.gov/entrez/dispomim.cgi?id=227500 227500]]
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*[[Factor VIIa 3D structures|Factor VIIa 3D structures]]
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== References ==
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==About this Structure==
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<references/>
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1CVW is a [http://en.wikipedia.org/wiki/Single_protein Single protein] structure of sequence from [http://en.wikipedia.org/wiki/Homo_sapiens Homo sapiens] with <scene name='pdbligand=CA:'>CA</scene> and <scene name='pdbligand=ANS:'>ANS</scene> as [http://en.wikipedia.org/wiki/ligands ligands]. Active as [http://en.wikipedia.org/wiki/Coagulation_factor_VIIa Coagulation factor VIIa], with EC number [http://www.brenda-enzymes.info/php/result_flat.php4?ecno=3.4.21.21 3.4.21.21] Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1CVW OCA].
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__TOC__
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</StructureSection>
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==Reference==
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Crystal structure of active site-inhibited human coagulation factor VIIa (des-Gla)., Kemball-Cook G, Johnson DJ, Tuddenham EG, Harlos K, J Struct Biol. 1999 Oct;127(3):213-23. PMID:[http://ispc.weizmann.ac.il//pmbin/getpm?pmid=10544046 10544046]
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[[Category: Coagulation factor VIIa]]
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[[Category: Homo sapiens]]
[[Category: Homo sapiens]]
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[[Category: Single protein]]
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[[Category: Large Structures]]
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[[Category: Harlos, K.]]
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[[Category: Harlos K]]
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[[Category: Johnson, D.J.D.]]
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[[Category: Johnson DJD]]
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[[Category: Kemball-Cook, G.]]
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[[Category: Kemball-Cook G]]
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[[Category: Tuddenham, E.G.D.]]
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[[Category: Tuddenham EGD]]
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[[Category: ANS]]
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[[Category: CA]]
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[[Category: blood coagulation]]
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[[Category: crystal structure]]
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[[Category: egf]]
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[[Category: factor viia]]
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[[Category: inhibitor]]
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[[Category: serine protease]]
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''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Fri Feb 15 15:37:35 2008''
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Current revision

Crystal structure of active site-inhibited human coagulation factor VIIA (DES-GLA)

PDB ID 1cvw

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