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[[Image:2bsf.gif|left|200px]]
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{{STRUCTURE_2bsf|  PDB=2bsf  |  SCENE=  }}
'''STRUCTURE OF THE C-TERMINAL RECEPTOR-BINDING DOMAIN OF AVIAN REOVIRUS FIBRE SIGMAC, ZN CRYSTAL FORM.'''


==Structure of the C-terminal receptor-binding domain of avian reovirus fibre sigmaC, Zn crystal form.==
<StructureSection load='2bsf' size='340' side='right'caption='[[2bsf]], [[Resolution|resolution]] 2.10&Aring;' scene=''>
== Structural highlights ==
<table><tr><td colspan='2'>[[2bsf]] is a 1 chain structure with sequence from [https://en.wikipedia.org/wiki/Avian_orthoreovirus Avian orthoreovirus]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=2BSF OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=2BSF 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]] 2.1&#8491;</td></tr>
<tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=SO4:SULFATE+ION'>SO4</scene>, <scene name='pdbligand=ZN:ZINC+ION'>ZN</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=2bsf FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=2bsf OCA], [https://pdbe.org/2bsf PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=2bsf RCSB], [https://www.ebi.ac.uk/pdbsum/2bsf PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=2bsf ProSAT]</span></td></tr>
</table>
== Function ==
[https://www.uniprot.org/uniprot/SIGC_ARVS1 SIGC_ARVS1] Structural protein responsible for cell attachment. Induces cell apoptosis.<ref>PMID:15033566</ref>
== 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/bs/2bsf_consurf.spt"</scriptWhenChecked>
    <scriptWhenUnchecked>script /wiki/extensions/Proteopedia/spt/initialview01.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=2bsf ConSurf].
<div style="clear:both"></div>
<div style="background-color:#fffaf0;">
== Publication Abstract from PubMed ==
Avian reovirus fibre, a homo-trimer of the sigmaC protein, is responsible for primary host cell attachment. The protein expressed in bacteria forms elongated fibres comprised of a carboxy-terminal globular head domain and a slender shaft, and partial proteolysis yielded a carboxy-terminal protease-stable domain that was amenable to crystallisation. Here, we show that this fragment retains receptor-binding capability and report its structure, solved using two-wavelength anomalous diffraction and refined using data collected from three different crystal forms at 2.1 angstroms, 2.35 angstroms and 3.0 angstroms resolution. The carboxy-terminal globular domain has a beta-barrel fold with the same overall topology as the mammalian reovirus fibre (sigma1). However, the monomers of the sigmaC trimer show a more splayed-out arrangement than in the sigma1 structure. Also resolved are two triple beta-spiral repeats of the shaft or stalk domain. The presence in the sequence of heptad repeats amino-terminal to these triple beta-spiral repeats suggests that the unresolved portion of the shaft domain contains a triple alpha-helical coiled-coil structure. Implications for the function and stability of the sigmaC protein are discussed.


==Overview==
Structure of the carboxy-terminal receptor-binding domain of avian reovirus fibre sigmaC.,Guardado Calvo P, Fox GC, Hermo Parrado XL, Llamas-Saiz AL, Costas C, Martinez-Costas J, Benavente J, van Raaij MJ J Mol Biol. 2005 Nov 18;354(1):137-49. Epub 2005 Sep 30. PMID:16236316<ref>PMID:16236316</ref>
Avian reovirus fibre, a homo-trimer of the sigmaC protein, is responsible for primary host cell attachment. The protein expressed in bacteria forms elongated fibres comprised of a carboxy-terminal globular head domain and a slender shaft, and partial proteolysis yielded a carboxy-terminal protease-stable domain that was amenable to crystallisation. Here, we show that this fragment retains receptor-binding capability and report its structure, solved using two-wavelength anomalous diffraction and refined using data collected from three different crystal forms at 2.1 angstroms, 2.35 angstroms and 3.0 angstroms resolution. The carboxy-terminal globular domain has a beta-barrel fold with the same overall topology as the mammalian reovirus fibre (sigma1). However, the monomers of the sigmaC trimer show a more splayed-out arrangement than in the sigma1 structure. Also resolved are two triple beta-spiral repeats of the shaft or stalk domain. The presence in the sequence of heptad repeats amino-terminal to these triple beta-spiral repeats suggests that the unresolved portion of the shaft domain contains a triple alpha-helical coiled-coil structure. Implications for the function and stability of the sigmaC protein are discussed.


==About this Structure==
From MEDLINE&reg;/PubMed&reg;, a database of the U.S. National Library of Medicine.<br>
2BSF is a [[Single protein]] structure of sequence from [http://en.wikipedia.org/wiki/Avian_orthoreovirus Avian orthoreovirus]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=2BSF OCA].
</div>
<div class="pdbe-citations 2bsf" style="background-color:#fffaf0;"></div>


==Reference==
==See Also==
Structure of the carboxy-terminal receptor-binding domain of avian reovirus fibre sigmaC., Guardado Calvo P, Fox GC, Hermo Parrado XL, Llamas-Saiz AL, Costas C, Martinez-Costas J, Benavente J, van Raaij MJ, J Mol Biol. 2005 Nov 18;354(1):137-49. Epub 2005 Sep 30. PMID:[http://www.ncbi.nlm.nih.gov/pubmed/16236316 16236316]
*[[Virus coat proteins 3D structures|Virus coat proteins 3D structures]]
== References ==
<references/>
__TOC__
</StructureSection>
[[Category: Avian orthoreovirus]]
[[Category: Avian orthoreovirus]]
[[Category: Single protein]]
[[Category: Large Structures]]
[[Category: Calvo, P Guardado.]]
[[Category: Fox GC]]
[[Category: Fox, G C.]]
[[Category: Guardado Calvo P]]
[[Category: Llamas-Saiz, A L.]]
[[Category: Hermo Parrado XL]]
[[Category: Parrado, X L.Hermo.]]
[[Category: Llamas-Saiz AL]]
[[Category: Raaij, M J.Van.]]
[[Category: Van Raaij MJ]]
[[Category: Beta-barrel]]
[[Category: Orthoreovirus]]
[[Category: Triple beta-spiral]]
[[Category: Viral protein]]
''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Sat May  3 20:44:09 2008''
Retrieved from "https://proteopedia.org/2bsf"