View source for 2ez6


==Crystal structure of Aquifex aeolicus RNase III (D44N) complexed with product of double-stranded RNA processing==
<StructureSection load='2ez6' size='340' side='right'caption='[[2ez6]], [[Resolution|resolution]] 2.05&Aring;' scene=''>
== Structural highlights ==
<table><tr><td colspan='2'>[[2ez6]] is a 4 chain structure with sequence from [https://en.wikipedia.org/wiki/Aquifex_aeolicus Aquifex aeolicus]. The September 2008 RCSB PDB [https://pdb.rcsb.org/pdb/static.do?p=education_discussion/molecule_of_the_month/index.html Molecule of the Month] feature on ''Ribonuclease A''  by David Goodsell is [https://dx.doi.org/10.2210/rcsb_pdb/mom_2008_9 10.2210/rcsb_pdb/mom_2008_9]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=2EZ6 OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=2EZ6 FirstGlance]. <br>
</td></tr><tr id='method'><td class="sblockLbl"><b>[[Empirical_models|Method:]]</b></td><td class="sblockDat" id="methodDat">X-ray diffraction, [[Resolution|Resolution]] 2.05&#8491;</td></tr>
<tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=MG:MAGNESIUM+ION'>MG</scene></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=2ez6 FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=2ez6 OCA], [https://pdbe.org/2ez6 PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=2ez6 RCSB], [https://www.ebi.ac.uk/pdbsum/2ez6 PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=2ez6 ProSAT]</span></td></tr>
</table>
== Function ==
[https://www.uniprot.org/uniprot/RNC_AQUAE RNC_AQUAE] Digests double-stranded RNA. Involved in the processing of primary rRNA transcript to yield the immediate precursors to the large and small rRNAs (23S and 16S). Also processes some mRNAs, and tRNAs when they are encoded in the rRNA operon.<ref>PMID:21138964</ref> <ref>PMID:16439209</ref> 
== 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/ez/2ez6_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=2ez6 ConSurf].
<div style="clear:both"></div>
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== Publication Abstract from PubMed ==
Members of the ribonuclease III (RNase III) family are double-stranded RNA (dsRNA) specific endoribonucleases characterized by a signature motif in their active centers and a two-base 3' overhang in their products. While Dicer, which produces small interfering RNAs, is currently the focus of intense interest, the structurally simpler bacterial RNase III serves as a paradigm for the entire family. Here, we present the crystal structure of an RNase III-product complex, the first catalytic complex observed for the family. A 7 residue linker within the protein facilitates induced fit in protein-RNA recognition. A pattern of protein-RNA interactions, defined by four RNA binding motifs in RNase III and three protein-interacting boxes in dsRNA, is responsible for substrate specificity, while conserved amino acid residues and divalent cations are responsible for scissile-bond cleavage. The structure reveals a wealth of information about the mechanism of RNA hydrolysis that can be extrapolated to other RNase III family members.

Structural insight into the mechanism of double-stranded RNA processing by ribonuclease III.,Gan J, Tropea JE, Austin BP, Court DL, Waugh DS, Ji X Cell. 2006 Jan 27;124(2):355-66. PMID:16439209<ref>PMID:16439209</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 2ez6" style="background-color:#fffaf0;"></div>

==See Also==
*[[Ribonuclease 3D structures|Ribonuclease 3D structures]]
== References ==
<references/>
__TOC__
</StructureSection>
[[Category: Aquifex aeolicus]]
[[Category: Large Structures]]
[[Category: RCSB PDB Molecule of the Month]]
[[Category: Ribonuclease A]]
[[Category: Austin BP]]
[[Category: Court DL]]
[[Category: Gan J]]
[[Category: Ji X]]
[[Category: Tropea JE]]
[[Category: Waugh DS]]