View source for 2fbo


==Crystal Structure of the Two Tandem V-type Regions of VCBP3 (v-region-containing chitin binding protein) to 1.85 A==
<StructureSection load='2fbo' size='340' side='right'caption='[[2fbo]], [[Resolution|resolution]] 1.85&Aring;' scene=''>
== Structural highlights ==
<table><tr><td colspan='2'>[[2fbo]] is a 1 chain structure with sequence from [https://en.wikipedia.org/wiki/Branchiostoma_floridae Branchiostoma floridae]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=2FBO OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=2FBO 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]] 1.85&#8491;</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=2fbo FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=2fbo OCA], [https://pdbe.org/2fbo PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=2fbo RCSB], [https://www.ebi.ac.uk/pdbsum/2fbo PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=2fbo ProSAT]</span></td></tr>
</table>
== Function ==
[https://www.uniprot.org/uniprot/Q8I9N0_BRAFL Q8I9N0_BRAFL] 
== 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/fb/2fbo_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=2fbo ConSurf].
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== Publication Abstract from PubMed ==
Although the origins of genes encoding the rearranging binding receptors remain obscure, it is predicted that their ancestral forms were nonrearranging immunoglobulin-type domains. Variable region-containing chitin-binding proteins (VCBPs) are diversified immune-type molecules found in amphioxus (Branchiostoma floridae), an invertebrate that diverged early in deuterostome phylogeny. To study the potential evolutionary relationships between VCBPs and vertebrate adaptive immune receptors, we solved the structures of both a single V-type domain (to 1.15 A) and a pair of V-type domains (to 1.85 A) from VCBP3. The deduced structures show integral features of the ancestral variable-region fold as well as unique features of variable-region pairing in molecules that may reflect characteristics of ancestral forms of diversified immune receptors found in modern-day vertebrates.

Ancient evolutionary origin of diversified variable regions demonstrated by crystal structures of an immune-type receptor in amphioxus.,Hernandez Prada JA, Haire RN, Allaire M, Jakoncic J, Stojanoff V, Cannon JP, Litman GW, Ostrov DA Nat Immunol. 2006 Aug;7(8):875-82. Epub 2006 Jun 25. PMID:16799561<ref>PMID:16799561</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 2fbo" style="background-color:#fffaf0;"></div>
== References ==
<references/>
__TOC__
</StructureSection>
[[Category: Branchiostoma floridae]]
[[Category: Large Structures]]
[[Category: Cannon JP]]
[[Category: Haire RN]]
[[Category: Hernandez Prada JA]]
[[Category: Jakoncic J]]
[[Category: Litman GW]]
[[Category: Ostrov DA]]