4oum
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==Crystal structure of human Caprin-2 C1q domain== | ==Crystal structure of human Caprin-2 C1q domain== | ||
| - | <StructureSection load='4oum' size='340' side='right' caption='[[4oum]], [[Resolution|resolution]] 1.49Å' scene=''> | + | <StructureSection load='4oum' size='340' side='right'caption='[[4oum]], [[Resolution|resolution]] 1.49Å' scene=''> |
== Structural highlights == | == Structural highlights == | ||
| - | <table><tr><td colspan='2'>[[4oum]] is a 1 chain structure. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=4OUM OCA]. For a <b>guided tour on the structure components</b> use [ | + | <table><tr><td colspan='2'>[[4oum]] is a 1 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=4OUM OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=4OUM FirstGlance]. <br> |
| - | </td></tr><tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat"><scene name='pdbligand=FLC:CITRATE+ANION'>FLC</scene>, <scene name='pdbligand=IPA:ISOPROPYL+ALCOHOL'>IPA</scene>, <scene name='pdbligand=PG4:TETRAETHYLENE+GLYCOL'>PG4</scene> | + | </td></tr><tr id='method'><td class="sblockLbl"><b>[[Empirical_models|Method:]]</b></td><td class="sblockDat" id="methodDat">X-ray diffraction, [[Resolution|Resolution]] 1.491Å</td></tr> |
| - | + | <tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=FLC:CITRATE+ANION'>FLC</scene>, <scene name='pdbligand=IPA:ISOPROPYL+ALCOHOL'>IPA</scene>, <scene name='pdbligand=PG4:TETRAETHYLENE+GLYCOL'>PG4</scene></td></tr> | |
| - | <tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[ | + | <tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[https://proteopedia.org/fgij/fg.htm?mol=4oum FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=4oum OCA], [https://pdbe.org/4oum PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=4oum RCSB], [https://www.ebi.ac.uk/pdbsum/4oum PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=4oum ProSAT]</span></td></tr> |
</table> | </table> | ||
| + | == Function == | ||
| + | [https://www.uniprot.org/uniprot/CAPR2_HUMAN CAPR2_HUMAN] May regulate the transport and translation of mRNAs, modulating for instance the expression of proteins involved in synaptic plasticity in neurons. Involved in regulation of growth as erythroblasts shift from a highly proliferative state towards their terminal phase of differentiation. May be involved in apoptosis.<ref>PMID:14593112</ref> | ||
| + | <div style="background-color:#fffaf0;"> | ||
| + | == Publication Abstract from PubMed == | ||
| + | Previously, we have identified Caprin-2 as a new regulator in canonical Wnt signaling through a mechanism of facilitating LRP5/6 phosphorylation; moreover, we found that its C-terminal C1q-related domain (Cap2_CRD) is required for this process. Here, we determined the crystal structures of Cap2_CRD from human and zebrafish, which both associate as a homotrimer with calcium located at the symmetric center. Surprisingly, the calcium binding-deficient mutant exists as a more stable trimer than its wild-type counterpart. Further studies showed that this Caprin-2 mutant disabled in binding calcium maintains the activity of promoting LRP5/6 phosphorylation, whereas the mutations disrupting Cap2_CRD homotrimer did impair such activity. Together, our findings suggested that the C-terminal CRD domain of Caprin-2 forms a flexible homotrimer mediated by calcium and that such trimeric assembly is required for Caprin-2 to regulate canonical Wnt signaling. | ||
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| + | Structural insights into the C1q domain of Caprin-2 in canonical Wnt signaling.,Miao H, Jia Y, Xie S, Wang X, Zhao J, Chu Y, Zhou Z, Shi Z, Song X, Li L J Biol Chem. 2014 Dec 5;289(49):34104-13. doi: 10.1074/jbc.M114.591636. Epub 2014, Oct 20. PMID:25331957<ref>PMID:25331957</ref> | ||
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| + | From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.<br> | ||
| + | </div> | ||
| + | <div class="pdbe-citations 4oum" style="background-color:#fffaf0;"></div> | ||
| + | == References == | ||
| + | <references/> | ||
__TOC__ | __TOC__ | ||
</StructureSection> | </StructureSection> | ||
| - | [[Category: | + | [[Category: Homo sapiens]] |
| - | [[Category: | + | [[Category: Large Structures]] |
| - | [[Category: | + | [[Category: Li L]] |
| - | [[Category: | + | [[Category: Song X]] |
| - | + | ||
Current revision
Crystal structure of human Caprin-2 C1q domain
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