View source for 1fvu


==CRYSTAL STRUCTURE OF BOTROCETIN==
<StructureSection load='1fvu' size='340' side='right'caption='[[1fvu]], [[Resolution|resolution]] 1.80&Aring;' scene=''>
== Structural highlights ==
<table><tr><td colspan='2'>[[1fvu]] is a 4 chain structure with sequence from [https://en.wikipedia.org/wiki/Bothrops_jararaca Bothrops jararaca]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1FVU OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=1FVU FirstGlance]. <br>
</td></tr><tr id='method'><td class="sblockLbl"><b>[[Empirical_models|Method:]]</b></td><td class="sblockDat" id="methodDat">X-ray diffraction, [[Resolution|Resolution]] 1.8&#8491;</td></tr>
<tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=MG:MAGNESIUM+ION'>MG</scene></td></tr>
<tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[https://proteopedia.org/fgij/fg.htm?mol=1fvu FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1fvu OCA], [https://pdbe.org/1fvu PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=1fvu RCSB], [https://www.ebi.ac.uk/pdbsum/1fvu PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=1fvu ProSAT]</span></td></tr>
</table>
== Function ==
[https://www.uniprot.org/uniprot/SLEA_BOTJA SLEA_BOTJA] Snaclec that binds to von Willebrand factor (VWF) and induces its interaction with GPIbalpha (GP1BA) (via the vWF A1 domain), resulting in platelet aggregation.
== Evolutionary Conservation ==
[[Image:Consurf_key_small.gif|200px|right]]
Check<jmol>
  <jmolCheckbox>
    <scriptWhenChecked>; select protein; define ~consurf_to_do selected; consurf_initial_scene = true; script "/wiki/ConSurf/fv/1fvu_consurf.spt"</scriptWhenChecked>
    <scriptWhenUnchecked>script /wiki/extensions/Proteopedia/spt/initialview03.spt</scriptWhenUnchecked>
    <text>to colour the structure by Evolutionary Conservation</text>
  </jmolCheckbox>
</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=1fvu ConSurf].
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== Publication Abstract from PubMed ==
The binding of von Willebrand factor (vWF) to the platelet receptor, glycoprotein (GP) Ib-IX-V complex, has a key role in the initiation of thrombus formation and is regulated by interactions with extracellular matrix components under the influence of hemodynamic forces. To a certain extent, these effects can be mimicked in vitro by two nonphysiologic modulators, ristocetin and botrocetin. The latter, isolated from the venom of the snake Bothrops jararaca, is a 31-kDa heterodimeric protein that forms a soluble complex with vWF. As an initial step toward understanding the mechanisms that regulate vWF function, we have solved the crystal structure of botrocetin at 1.8 A resolution. Botrocetin exhibits homology with other snake proteins, but contains only one metal binding site as compared to two in Factor IX binding protein and Factor IX/X binding protein and none in flavocetin. A distinctive feature of botrocetin is the presence of a negatively charged surface that may play a role in the association with the vWF A1 domain.

Crystal structure of the von Willebrand factor modulator botrocetin.,Sen U, Vasudevan S, Subbarao G, McClintock RA, Celikel R, Ruggeri ZM, Varughese KI Biochemistry. 2001 Jan 16;40(2):345-52. PMID:11148028<ref>PMID:11148028</ref>

From MEDLINE&reg;/PubMed&reg;, a database of the U.S. National Library of Medicine.<br>
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<div class="pdbe-citations 1fvu" style="background-color:#fffaf0;"></div>
== References ==
<references/>
__TOC__
</StructureSection>
[[Category: Bothrops jararaca]]
[[Category: Large Structures]]
[[Category: Celikel R]]
[[Category: McClintoc RA]]
[[Category: Ruggeri ZM]]
[[Category: Sen U]]
[[Category: Subbarao G]]
[[Category: Varughese KI]]
[[Category: Vasudevan S]]