5guh
From Proteopedia
(Difference between revisions)
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| - | '''Unreleased structure''' | ||
| - | + | ==Crystal structure of silkworm PIWI-clade Argonaute Siwi bound to piRNA== | |
| + | <StructureSection load='5guh' size='340' side='right' caption='[[5guh]], [[Resolution|resolution]] 2.40Å' scene=''> | ||
| + | == Structural highlights == | ||
| + | <table><tr><td colspan='2'>[[5guh]] is a 2 chain structure with sequence from [http://en.wikipedia.org/wiki/Bombyx_mori Bombyx mori]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=5GUH OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=5GUH FirstGlance]. <br> | ||
| + | </td></tr><tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat"><scene name='pdbligand=MG:MAGNESIUM+ION'>MG</scene></td></tr> | ||
| + | <tr id='NonStdRes'><td class="sblockLbl"><b>[[Non-Standard_Residue|NonStd Res:]]</b></td><td class="sblockDat"><scene name='pdbligand=OMU:O2-METHYLURIDINE+5-MONOPHOSPHATE'>OMU</scene></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=5guh FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=5guh OCA], [http://pdbe.org/5guh PDBe], [http://www.rcsb.org/pdb/explore.do?structureId=5guh RCSB], [http://www.ebi.ac.uk/pdbsum/5guh PDBsum], [http://prosat.h-its.org/prosat/prosatexe?pdbcode=5guh ProSAT]</span></td></tr> | ||
| + | </table> | ||
| + | <div style="background-color:#fffaf0;"> | ||
| + | == Publication Abstract from PubMed == | ||
| + | PIWI-clade Argonaute proteins associate with PIWI-interacting RNAs (piRNAs) and silence transposable elements in animal gonads. Here, we report the crystal structure of a silkworm PIWI-clade Argonaute, Siwi, bound to the endogenous piRNA, at 2.4 A resolution. Siwi adopts a bilobed architecture consisting of N-PAZ and MID-PIWI lobes, in which the 5' and 3' ends of the bound piRNA are anchored by the MID-PIWI and PAZ domains, respectively. A structural comparison of Siwi with AGO-clade Argonautes reveals notable differences in their nucleic-acid-binding channels, likely reflecting the distinct lengths of their guide RNAs and their mechanistic differences in guide RNA loading and cleavage product release. In addition, the structure reveals that Siwi and prokaryotic, but not eukaryotic, AGO-clade Argonautes share unexpected similarities, such as metal-dependent 5'-phosphate recognition and a potential structural transition during the catalytic-tetrad formation. Overall, this study provides a critical starting point toward a mechanistic understanding of piRNA-mediated transposon silencing. | ||
| - | + | Crystal Structure of Silkworm PIWI-Clade Argonaute Siwi Bound to piRNA.,Matsumoto N, Nishimasu H, Sakakibara K, Nishida KM, Hirano T, Ishitani R, Siomi H, Siomi MC, Nureki O Cell. 2016 Oct 6;167(2):484-497.e9. doi: 10.1016/j.cell.2016.09.002. Epub 2016, Sep 29. PMID:27693359<ref>PMID:27693359</ref> | |
| - | + | From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.<br> | |
| - | + | </div> | |
| - | + | <div class="pdbe-citations 5guh" style="background-color:#fffaf0;"></div> | |
| - | + | == References == | |
| - | [[Category: | + | <references/> |
| + | __TOC__ | ||
| + | </StructureSection> | ||
| + | [[Category: Bombyx mori]] | ||
[[Category: Ishitani, R]] | [[Category: Ishitani, R]] | ||
| + | [[Category: Matsumoto, N]] | ||
| + | [[Category: Nishimasu, H]] | ||
| + | [[Category: Nureki, O]] | ||
| + | [[Category: Hydrolase-rna complex]] | ||
| + | [[Category: Nuclease]] | ||
| + | [[Category: Rnaseh]] | ||
Revision as of 17:26, 19 October 2016
Crystal structure of silkworm PIWI-clade Argonaute Siwi bound to piRNA
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