2je9

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{{Seed}}
 
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[[Image:2je9.png|left|200px]]
 
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==CRYSTAL STRUCTURE OF RECOMBINANT DIOCLEA GRANDIFLORA LECTIN COMPLEXED WITH 5-BROMO-4-CHLORO-3-INDOLYL-A-D-MANNOSE==
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The line below this paragraph, containing "STRUCTURE_2je9", creates the "Structure Box" on the page.
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<StructureSection load='2je9' size='340' side='right'caption='[[2je9]], [[Resolution|resolution]] 2.10&Aring;' scene=''>
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You may change the PDB parameter (which sets the PDB file loaded into the applet)
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== Structural highlights ==
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or the SCENE parameter (which sets the initial scene displayed when the page is loaded),
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<table><tr><td colspan='2'>[[2je9]] is a 4 chain structure with sequence from [https://en.wikipedia.org/wiki/Macropsychanthus_grandiflorus Macropsychanthus grandiflorus]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=2JE9 OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=2JE9 FirstGlance]. <br>
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or leave the SCENE parameter empty for the default display.
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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]] 2.1&#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=CA:CALCIUM+ION'>CA</scene>, <scene name='pdbligand=MN:MANGANESE+(II)+ION'>MN</scene>, <scene name='pdbligand=SO4:SULFATE+ION'>SO4</scene>, <scene name='pdbligand=XMM:(2R,3S,4S,5S,6R)-2-(5-BROMO-4-CHLORO-1H-INDOL-3-YLOXY)-TETRAHYDRO-6-(HYDROXYMETHYL)-2H-PYRAN-3,4,5-TRIOL'>XMM</scene></td></tr>
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{{STRUCTURE_2je9| PDB=2je9 | SCENE= }}
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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=2je9 FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=2je9 OCA], [https://pdbe.org/2je9 PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=2je9 RCSB], [https://www.ebi.ac.uk/pdbsum/2je9 PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=2je9 ProSAT]</span></td></tr>
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</table>
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== Function ==
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[https://www.uniprot.org/uniprot/LECA_DIOGR LECA_DIOGR] D-mannose/D-glucose-binding lectin. Has anti-inflammatory activity in rats. Induces histamine release in mast cells from rat. Induces lymphocyte proliferation and IFNG production. Shows toxicity against the aquatic snail B.glabrata at concentrations higher than 50 ug/ml.<ref>PMID:1398779</ref> <ref>PMID:7524287</ref> <ref>PMID:18472821</ref> <ref>PMID:9575151</ref> <ref>PMID:10747944</ref> <ref>PMID:19765980</ref>
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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/je/2je9_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=2je9 ConSurf].
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<div style="clear:both"></div>
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<div style="background-color:#fffaf0;">
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== Publication Abstract from PubMed ==
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The structural ground underlying the pH-dependency of the dimer-tetramer transition of Diocleinae lectins was investigated by equilibrium sedimentation and X-ray crystal structure determination of wild-type and site-directed mutants of recombinant lectins. Synthetic genes coding for the full-length alpha-chains of the seed lectins of Dioclea guianensis (termed r-alphaDguia) and Dioclea grandiflora (termed r-alphaDGL) were designed and expressed in Escherichia coli. This pioneering approach, which will be described in detail in the present paper, yielded recombinant lectins displaying carbohydrate-binding activity, dimer-tetramer equilibria and crystal structures indistinguishable from their natural homologues. Conversion of the pH-stable tetrameric r-alphaDGL into a structure exhibiting pH-dependent dimer-tetramer transition was accomplished through mutations that abolished the interdimeric interactions at the central cavity of the tetrameric lectins. Both the central and the peripheral interacting regions bear structural information for formation of the canonical legume lectin tetramer. We hypothesize that the strength of the ionic contacts at these sites may be modulated by the pH, leading to dissociation of those lectin structures that are not locked into a pH-stable tetramer through interdimeric contacts networking the central cavity loops.
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===CRYSTAL STRUCTURE OF RECOMBINANT DIOCLEA GRANDIFLORA LECTIN COMPLEXED WITH 5-BROMO-4-CHLORO-3-INDOLYL-A-D-MANNOSE===
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Insights into the structural basis of the pH-dependent dimer-tetramer equilibrium through crystallographic analysis of recombinant Diocleinae lectins.,Nagano CS, Calvete JJ, Barettino D, Perez A, Cavada BS, Sanz L Biochem J. 2008 Jan 15;409(2):417-28. PMID:17937659<ref>PMID:17937659</ref>
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From MEDLINE&reg;/PubMed&reg;, a database of the U.S. National Library of Medicine.<br>
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==About this Structure==
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</div>
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2JE9 is a 4 chains structure of sequences from [http://en.wikipedia.org/wiki/Dioclea_grandiflora Dioclea grandiflora]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=2JE9 OCA].
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<div class="pdbe-citations 2je9" style="background-color:#fffaf0;"></div>
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[[Category: Dioclea grandiflora]]
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== References ==
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[[Category: Calvete, J J.]]
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<references/>
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[[Category: Cavada, B S.]]
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__TOC__
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[[Category: Nagano, C S.]]
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</StructureSection>
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[[Category: Sanz, L.]]
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[[Category: Large Structures]]
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[[Category: Calcium]]
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[[Category: Macropsychanthus grandiflorus]]
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[[Category: Carbohydrate binding protein]]
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[[Category: Calvete JJ]]
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[[Category: Cona-like]]
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[[Category: Cavada BS]]
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[[Category: Lectin]]
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[[Category: Nagano CS]]
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[[Category: Legume lectin]]
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[[Category: Sanz L]]
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[[Category: Manganese]]
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[[Category: Metal- binding]]
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[[Category: Recombinant lectin]]
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[[Category: Sugar-binding protein]]
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''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Tue Feb 17 06:01:43 2009''
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Current revision

CRYSTAL STRUCTURE OF RECOMBINANT DIOCLEA GRANDIFLORA LECTIN COMPLEXED WITH 5-BROMO-4-CHLORO-3-INDOLYL-A-D-MANNOSE

PDB ID 2je9

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