3l4r

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{{STRUCTURE_3l4r| PDB=3l4r | SCENE= }}
 
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===Crystal structure of the dog lipocalin allergen Can f 2 and implications for cross-reactivity to the cat allergen Fel d 4===
 
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{{ABSTRACT_PUBMED_20621650}}
 
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==About this Structure==
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==Crystal structure of the dog lipocalin allergen Can f 2 and implications for cross-reactivity to the cat allergen Fel d 4==
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[[3l4r]] is a 1 chain structure with sequence from [http://en.wikipedia.org/wiki/Canis_lupus_familiaris Canis lupus familiaris]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=3L4R OCA].
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<StructureSection load='3l4r' size='340' side='right'caption='[[3l4r]], [[Resolution|resolution]] 1.45&Aring;' scene=''>
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== Structural highlights ==
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<table><tr><td colspan='2'>[[3l4r]] is a 1 chain structure with sequence from [https://en.wikipedia.org/wiki/Canis_lupus_familiaris Canis lupus familiaris]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=3L4R OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=3L4R FirstGlance]. <br>
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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]] 1.45&#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=GOL:GLYCEROL'>GOL</scene></td></tr>
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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=3l4r FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=3l4r OCA], [https://pdbe.org/3l4r PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=3l4r RCSB], [https://www.ebi.ac.uk/pdbsum/3l4r PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=3l4r ProSAT]</span></td></tr>
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</table>
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== Function ==
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[https://www.uniprot.org/uniprot/ALL2_CANLF ALL2_CANLF]
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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/l4/3l4r_consurf.spt"</scriptWhenChecked>
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<scriptWhenUnchecked>script /wiki/extensions/Proteopedia/spt/initialview03.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=3l4r 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 dog lipocalin allergen Can f 2 is an important cause of allergic sensitization in humans worldwide. Here, the first crystal structure of recombinant rCan f 2 at 1.45 A resolution displays a classical lipocalin fold with a conserved Gly-Xaa-Trp motif, in which Trp19 stabilizes the overall topology of the monomeric rCan f 2. Phe38 and Tyr84 localized on the L1 and L5 loops, respectively, control access to the highly hydrophobic calyx. Although the rCan f 2 calyx is nearly identical with the aero-allergens MUP1, Equ c 1 and A2U from mouse, horse and rat, respectively, no IgE cross-reactivity was found using sera from five mono-sensitized subjects. However, clear IgE cross-reactivity was demonstrated between Can f 2 and the cat allergen Fel d 4, although they share less than 22% sequence identity. This suggests a role for these allergens in co-sensitization between cat- and dog-allergic patients.
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==Reference==
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Crystal structure of the dog lipocalin allergen Can f 2: implications for cross-reactivity to the cat allergen Fel d 4.,Madhurantakam C, Nilsson OB, Uchtenhagen H, Konradsen J, Saarne T, Hogbom E, Sandalova T, Gronlund H, Achour A J Mol Biol. 2010 Aug 6;401(1):68-83. Epub 2010 May 26. PMID:20621650<ref>PMID:20621650</ref>
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<ref group="xtra">PMID:020621650</ref><references group="xtra"/><references/>
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From MEDLINE&reg;/PubMed&reg;, a database of the U.S. National Library of Medicine.<br>
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</div>
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<div class="pdbe-citations 3l4r" style="background-color:#fffaf0;"></div>
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== References ==
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<references/>
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__TOC__
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</StructureSection>
[[Category: Canis lupus familiaris]]
[[Category: Canis lupus familiaris]]
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[[Category: Achour, A.]]
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[[Category: Large Structures]]
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[[Category: Gronlund, H.]]
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[[Category: Achour A]]
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[[Category: Madhurantakam, C.]]
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[[Category: Gronlund H]]
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[[Category: Nilsson, O B.]]
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[[Category: Madhurantakam C]]
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[[Category: Allergen]]
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[[Category: Nilsson OB]]
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[[Category: Disulfide bond]]
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[[Category: Lipid binding protein]]
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[[Category: Lipocalin allergen]]
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[[Category: Secreted]]
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[[Category: Transport]]
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Current revision

Crystal structure of the dog lipocalin allergen Can f 2 and implications for cross-reactivity to the cat allergen Fel d 4

PDB ID 3l4r

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