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==Crystal Structure of human Hiwi1 (V361M) PAZ domain (residues 277-399) in complex with 14-mer RNA (12-bp + 2-nt overhang) containing 2'-OCH3 at its 3'-end==
==Crystal Structure of human Hiwi1 (V361M) PAZ domain (residues 277-399) in complex with 14-mer RNA (12-bp + 2-nt overhang) containing 2'-OCH3 at its 3'-end==
<StructureSection load='3o7v' size='340' side='right' caption='[[3o7v]], [[Resolution|resolution]] 2.10&Aring;' scene=''>
<StructureSection load='3o7v' size='340' side='right'caption='[[3o7v]], [[Resolution|resolution]] 2.10&Aring;' scene=''>
== Structural highlights ==
== Structural highlights ==
<table><tr><td colspan='2'>[[3o7v]] is a 2 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=3O7V OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=3O7V FirstGlance]. <br>
<table><tr><td colspan='2'>[[3o7v]] is a 2 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=3O7V OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=3O7V FirstGlance]. <br>
</td></tr><tr id='NonStdRes'><td class="sblockLbl"><b>[[Non-Standard_Residue|NonStd Res:]]</b></td><td class="sblockDat"><scene name='pdbligand=MSE:SELENOMETHIONINE'>MSE</scene>, <scene name='pdbligand=OMU:O2-METHYLURIDINE+5-MONOPHOSPHATE'>OMU</scene></td></tr>
</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>
<tr id='related'><td class="sblockLbl"><b>[[Related_structure|Related:]]</b></td><td class="sblockDat">[[3o3i|3o3i]], [[3o6e|3o6e]], [[3o7x|3o7x]]</td></tr>
<tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=MSE:SELENOMETHIONINE'>MSE</scene>, <scene name='pdbligand=OMU:O2-METHYLURIDINE+5-MONOPHOSPHATE'>OMU</scene></td></tr>
<tr id='gene'><td class="sblockLbl"><b>[[Gene|Gene:]]</b></td><td class="sblockDat">HIWI, Piwi-like protein 1, PIWIL1 ([http://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=9606 Homo sapiens])</td></tr>
<tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[https://proteopedia.org/fgij/fg.htm?mol=3o7v FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=3o7v OCA], [https://pdbe.org/3o7v PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=3o7v RCSB], [https://www.ebi.ac.uk/pdbsum/3o7v PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=3o7v ProSAT]</span></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=3o7v FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=3o7v OCA], [http://www.rcsb.org/pdb/explore.do?structureId=3o7v RCSB], [http://www.ebi.ac.uk/pdbsum/3o7v PDBsum]</span></td></tr>
</table>
</table>
== Function ==
[[http://www.uniprot.org/uniprot/PIWL1_HUMAN PIWL1_HUMAN]] Plays a central role during spermatogenesis by repressing transposable elements and prevent their mobilization, which is essential for the germline integrity. Acts via the piRNA metabolic process, which mediates the repression of transposable elements during meiosis by forming complexes composed of piRNAs and Piwi proteins and govern the methylation and subsequent repression of transposons. Directly binds methylated piRNAs, a class of 24 to 30 nucleotide RNAs that are generated by a Dicer-independent mechanism and are primarily derived from transposons and other repeated sequence elements. Besides their function in transposable elements repression, piRNAs are probably involved in other processes during meiosis such as translation regulation. Probable component of some RISC complex, which mediates RNA cleavage and translational silencing. Also plays a role in the formation of chromatoid bodies and is required for some miRNAs stability (By similarity). Isoform 3 may be a negative developmental regulator.<ref>PMID:12037681</ref> <ref>PMID:14749716</ref> <ref>PMID:16287078</ref> 
<div style="background-color:#fffaf0;">
<div style="background-color:#fffaf0;">
== Publication Abstract from PubMed ==
== Publication Abstract from PubMed ==
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From MEDLINE&reg;/PubMed&reg;, a database of the U.S. National Library of Medicine.<br>
From MEDLINE&reg;/PubMed&reg;, a database of the U.S. National Library of Medicine.<br>
</div>
</div>
<div class="pdbe-citations 3o7v" style="background-color:#fffaf0;"></div>
== References ==
== References ==
<references/>
<references/>
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</StructureSection>
</StructureSection>
[[Category: Homo sapiens]]
[[Category: Homo sapiens]]
[[Category: Ma, J B]]
[[Category: Large Structures]]
[[Category: Patel, D J]]
[[Category: Ma J-B]]
[[Category: Simanshu, D K]]
[[Category: Patel DJ]]
[[Category: Tian, Y]]
[[Category: Simanshu DK]]
[[Category: Hili]]
[[Category: Tian Y]]
[[Category: Hiwi1]]
[[Category: Paz domain]]
[[Category: Pi-rna]]
[[Category: Piwi]]
[[Category: Rna binding protein]]
[[Category: Rna binding protein-rna complex]]
[[Category: Rna silencing]]
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