3pos

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[[Image:3pos.png|left|200px]]
 
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{{STRUCTURE_3pos| PDB=3pos | SCENE= }}
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==Crystal structure of the globular domain of human calreticulin==
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<StructureSection load='3pos' size='340' side='right'caption='[[3pos]], [[Resolution|resolution]] 1.65&Aring;' scene=''>
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== Structural highlights ==
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<table><tr><td colspan='2'>[[3pos]] is a 3 chain structure with sequence from [https://en.wikipedia.org/wiki/Homo_sapiens Homo sapiens]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=3POS OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=3POS 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]] 1.65&#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></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=3pos FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=3pos OCA], [https://pdbe.org/3pos PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=3pos RCSB], [https://www.ebi.ac.uk/pdbsum/3pos PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=3pos ProSAT]</span></td></tr>
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</table>
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== Function ==
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[https://www.uniprot.org/uniprot/CALR_HUMAN CALR_HUMAN] Calcium-binding chaperone that promotes folding, oligomeric assembly and quality control in the endoplasmic reticulum (ER) via the calreticulin/calnexin cycle. This lectin interacts transiently with almost all of the monoglucosylated glycoproteins that are synthesized in the ER. Interacts with the DNA-binding domain of NR3C1 and mediates its nuclear export. Involved in maternal gene expression regulation. May participate in oocyte maturation via the regulation of calcium homeostasis (By similarity).<ref>PMID:7876246</ref> <ref>PMID:11149926</ref>
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<div style="background-color:#fffaf0;">
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== Publication Abstract from PubMed ==
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In the endoplasmic reticulum, calreticulin acts as a chaperone and a Ca(2+)-signalling protein. At the cell surface, it mediates numerous important biological effects. The crystal structure of the human calreticulin globular domain was solved at 1.55 A resolution. Interactions of the flexible N-terminal extension with the edge of the lectin site are consistently observed, revealing a hitherto unidentified peptide-binding site. A calreticulin molecular zipper, observed in all crystal lattices, could further extend this site by creating a binding cavity lined by hydrophobic residues. These data thus provide a first structural insight into the lectin-independent binding properties of calreticulin and suggest new working hypotheses, including that of a multi-molecular mechanism.
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===Crystal structure of the globular domain of human calreticulin===
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X-ray structure of the human calreticulin globular domain reveals a Peptide-binding area and suggests a multi-molecular mechanism.,Chouquet A, Paidassi H, Ling WL, Frachet P, Houen G, Arlaud GJ, Gaboriaud C PLoS One. 2011 Mar 15;6(3):e17886. PMID:21423620<ref>PMID:21423620</ref>
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{{ABSTRACT_PUBMED_21423620}}
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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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==About this Structure==
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<div class="pdbe-citations 3pos" style="background-color:#fffaf0;"></div>
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[[3pos]] is a 3 chain structure with sequence from [http://en.wikipedia.org/wiki/Homo_sapiens Homo sapiens]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=3POS OCA].
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==See Also==
==See Also==
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*[[Cytochrome P450|Cytochrome P450]]
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*[[Calreticulin 3D structures|Calreticulin 3D structures]]
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*[[Cytochrome P450 3D structures|Cytochrome P450 3D structures]]
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==Reference==
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== References ==
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<ref group="xtra">PMID:021423620</ref><references group="xtra"/>
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<references/>
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__TOC__
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</StructureSection>
[[Category: Homo sapiens]]
[[Category: Homo sapiens]]
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[[Category: Arlaud, G J.]]
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[[Category: Large Structures]]
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[[Category: Chouquet, A.]]
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[[Category: Arlaud GJ]]
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[[Category: Frachet, P.]]
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[[Category: Chouquet A]]
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[[Category: Gaboriaud, C.]]
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[[Category: Frachet P]]
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[[Category: Houen, G.]]
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[[Category: Gaboriaud C]]
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[[Category: Ling, W L.]]
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[[Category: Houen G]]
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[[Category: Paidassi, H.]]
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[[Category: Ling W-L]]
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[[Category: Carbohydrate binding]]
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[[Category: Paidassi H]]
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[[Category: Chaperone]]
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[[Category: Cnx/crt family]]
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[[Category: Legume lectin fold]]
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[[Category: Multi-compartmental]]
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[[Category: Multi-functional]]
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[[Category: Peptide binding]]
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Current revision

Crystal structure of the globular domain of human calreticulin

PDB ID 3pos

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