View source for 1jui


==CONCANAVALIN A-CARBOHYDRATE MIMICKING 10-MER PEPTIDE COMPLEX==
<StructureSection load='1jui' size='340' side='right' caption='[[1jui]], [[Resolution|resolution]] 2.75&Aring;' scene=''>
== Structural highlights ==
<table><tr><td colspan='2'>[[1jui]] is a 8 chain structure with sequence from [http://en.wikipedia.org/wiki/Canavalia_ensiformis Canavalia ensiformis]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1JUI OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=1JUI FirstGlance]. <br>
</td></tr><tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat"><scene name='pdbligand=CA:CALCIUM+ION'>CA</scene>, <scene name='pdbligand=MN:MANGANESE+(II)+ION'>MN</scene></td></tr>
<tr id='related'><td class="sblockLbl"><b>[[Related_structure|Related:]]</b></td><td class="sblockDat">[[1joj|1joj]], [[1jyc|1jyc]], [[1jyi|1jyi]]</td></tr>
<tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=1jui FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1jui OCA], [http://pdbe.org/1jui PDBe], [http://www.rcsb.org/pdb/explore.do?structureId=1jui RCSB], [http://www.ebi.ac.uk/pdbsum/1jui PDBsum], [http://prosat.h-its.org/prosat/prosatexe?pdbcode=1jui ProSAT]</span></td></tr>
</table>
== Function ==
[[http://www.uniprot.org/uniprot/CONA_CANBR CONA_CANBR]] Glucose/D-mannose specific lectin. Has anti-inflammatory activity in rats. Induces histamine release in mast cells from hamster and rat. Induces lymphocyte proliferation and IFNG production. Shows toxicity against the aquatic snail B.glabrata at concentrations higher than 20 ug/ml.<ref>PMID:1398779</ref> <ref>PMID:7524287</ref> <ref>PMID:8891754</ref> <ref>PMID:18472821</ref> <ref>PMID:9575151</ref> <ref>PMID:10747944</ref> <ref>PMID:19765980</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/ju/1jui_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=1jui ConSurf].
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== Publication Abstract from PubMed ==
The structures of concanavalin A (ConA) in complex with two carbohydrate-mimicking peptides, 10-mer (MYWYPYASGS) and 15-mer (RVWYPYGSYLTASGS) have been determined at 2.75 A resolution. In both crystal structures four independent peptide molecules bind to each of the crystallographically independent subunits of ConA tetramer. The peptides exhibit small but significant variability in conformations and interactions while binding to ConA. The crystal structure of another similar peptide, 12-mer (DVFYPYPYASGS), in complex with ConA has been determined (Jain, D., K. J. Kaur, B. Sundaravadivel, and D. M. Salunke. 2000. Structural and functional consequences of peptide-carbohydrate mimicry. J. Biol. Chem. 275:16098-16102). Comparison of the three complexes shows that the peptides bind to ConA at a common binding site, using different contacting residues and interactions depending on their sequence and the local environment at the binding site. The binding is also optimized by corresponding plasticity of the peptide binding site on ConA. The diversity in conformation and interactions observed here are in agreement with the structural leeway concerning plasticity of specific molecular recognition in biological processes. The adaptability of peptide-ConA interactions may also be correlated with the carbohydrate-mimicking property of these peptides.

Plasticity in protein-peptide recognition: crystal structures of two different peptides bound to concanavalin A.,Jain D, Kaur KJ, Salunke DM Biophys J. 2001 Jun;80(6):2912-21. PMID:11371463<ref>PMID:11371463</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 1jui" style="background-color:#fffaf0;"></div>

==See Also==
*[[Concanavalin A|Concanavalin A]]
== References ==
<references/>
__TOC__
</StructureSection>
[[Category: Canavalia ensiformis]]
[[Category: Jain, D]]
[[Category: Kaur, K J]]
[[Category: Salunke, D M]]
[[Category: Lectin]]
[[Category: Sugar binding protein]]