View source for 1r4k


==Solution Structure of the Drosophila Argonaute 1 PAZ Domain==
<StructureSection load='1r4k' size='340' side='right'caption='[[1r4k]]' scene=''>
== Structural highlights ==
<table><tr><td colspan='2'>[[1r4k]] is a 1 chain structure with sequence from [https://en.wikipedia.org/wiki/Drosophila_melanogaster Drosophila melanogaster]. Full experimental information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1R4K OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=1R4K FirstGlance]. <br>
</td></tr><tr id='method'><td class="sblockLbl"><b>[[Empirical_models|Method:]]</b></td><td class="sblockDat" id="methodDat">Solution NMR</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=1r4k FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1r4k OCA], [https://pdbe.org/1r4k PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=1r4k RCSB], [https://www.ebi.ac.uk/pdbsum/1r4k PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=1r4k ProSAT]</span></td></tr>
</table>
== Function ==
[https://www.uniprot.org/uniprot/Q32KD4_DROME Q32KD4_DROME] 
== Evolutionary Conservation ==
[[Image:Consurf_key_small.gif|200px|right]]
Check<jmol>
  <jmolCheckbox>
    <scriptWhenChecked>; select protein; define ~consurf_to_do selected; consurf_initial_scene = true; script "/wiki/ConSurf/r4/1r4k_consurf.spt"</scriptWhenChecked>
    <scriptWhenUnchecked>script /wiki/extensions/Proteopedia/spt/initialview01.spt</scriptWhenUnchecked>
    <text>to colour the structure by Evolutionary Conservation</text>
  </jmolCheckbox>
</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=1r4k ConSurf].
<div style="clear:both"></div>
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== Publication Abstract from PubMed ==
The discovery of RNA-mediated gene-silencing pathways, including RNA interference, highlights a fundamental role of short RNAs in eukaryotic gene regulation and antiviral defence. Members of the Dicer and Argonaute protein families are essential components of these RNA-silencing pathways. Notably, these two families possess an evolutionarily conserved PAZ (Piwi/Argonaute/Zwille) domain whose biochemical function is unknown. Here we report the nuclear magnetic resonance solution structure of the PAZ domain from Drosophila melanogaster Argonaute 1 (Ago1). The structure consists of a left-handed, six-stranded beta-barrel capped at one end by two alpha-helices and wrapped on one side by a distinctive appendage, which comprises a long beta-hairpin and a short alpha-helix. Using structural and biochemical analyses, we demonstrate that the PAZ domain binds a 5-nucleotide RNA with 1:1 stoichiometry. We map the RNA-binding surface to the open face of the beta-barrel, which contains amino acids conserved within the PAZ domain family, and we define the 5'-to-3' orientation of single-stranded RNA bound within that site. Furthermore, we show that PAZ domains from different human Argonaute proteins also bind RNA, establishing a conserved function for this domain.

Structure and conserved RNA binding of the PAZ domain.,Yan KS, Yan S, Farooq A, Han A, Zeng L, Zhou MM Nature. 2003 Nov 27;426(6965):468-74. Epub 2003 Nov 16. PMID:14615802<ref>PMID:14615802</ref>

From MEDLINE&reg;/PubMed&reg;, a database of the U.S. National Library of Medicine.<br>
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<div class="pdbe-citations 1r4k" style="background-color:#fffaf0;"></div>

==See Also==
*[[Argonaute 3D structures|Argonaute 3D structures]]
== References ==
<references/>
__TOC__
</StructureSection>
[[Category: Drosophila melanogaster]]
[[Category: Large Structures]]
[[Category: Farooq A]]
[[Category: Han A]]
[[Category: Yan KS]]
[[Category: Yan S]]
[[Category: Zeng L]]
[[Category: Zhou M-M]]