View source for 2lcq


==Solution structure of the endonuclease Nob1 from P.horikoshii==
<StructureSection load='2lcq' size='340' side='right'caption='[[2lcq]]' scene=''>
== Structural highlights ==
<table><tr><td colspan='2'>[[2lcq]] is a 1 chain structure with sequence from [https://en.wikipedia.org/wiki/Pyrococcus_horikoshii_OT3 Pyrococcus horikoshii OT3]. Full experimental information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=2LCQ OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=2LCQ FirstGlance]. <br>
</td></tr><tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=ZN:ZINC+ION'>ZN</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=2lcq FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=2lcq OCA], [https://pdbe.org/2lcq PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=2lcq RCSB], [https://www.ebi.ac.uk/pdbsum/2lcq PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=2lcq ProSAT]</span></td></tr>
</table>
== Function ==
[https://www.uniprot.org/uniprot/NOB1_PYRHO NOB1_PYRHO] Toxic component of a toxin-antitoxin (TA) module (Potential). Processes pre-16S-rRNA at its 3' end (the D-site) to yield the mature 3' end.<ref>PMID:22156373</ref> 
<div style="background-color:#fffaf0;">
== Publication Abstract from PubMed ==
Eukaryotic ribosome biogenesis requires the concerted action of numerous ribosome assembly factors, for most of which structural and functional information is currently lacking. Nob1, which can be identified in eukaryotes and archaea, is required for the final maturation of the small subunit ribosomal RNA in yeast by catalyzing cleavage at site D after export of the preribosomal subunit into the cytoplasm. Here, we show that this also holds true for Nob1 from the archaeon Pyrococcus horikoshii, which efficiently cleaves RNA-substrates containing the D-site of the preribosomal RNA in a manganese-dependent manner. The structure of PhNob1 solved by nuclear magnetic resonance spectroscopy revealed a PIN domain common with many nucleases and a zinc ribbon domain, which are structurally connected by a flexible linker. We show that amino acid residues required for substrate binding reside in the PIN domain whereas the zinc ribbon domain alone is sufficient to bind helix 40 of the small subunit rRNA. This suggests that the zinc ribbon domain acts as an anchor point for the protein on the nascent subunit positioning it in the proximity of the cleavage site.

Structural and functional analysis of the archaeal endonuclease Nob1.,Veith T, Martin R, Wurm JP, Weis BL, Duchardt-Ferner E, Safferthal C, Hennig R, Mirus O, Bohnsack MT, Wohnert J, Schleiff E Nucleic Acids Res. 2012 Apr 1;40(7):3259-74. Epub 2011 Dec 10. PMID:22156373<ref>PMID:22156373</ref>

From MEDLINE&reg;/PubMed&reg;, a database of the U.S. National Library of Medicine.<br>
</div>
<div class="pdbe-citations 2lcq" style="background-color:#fffaf0;"></div>
== References ==
<references/>
__TOC__
</StructureSection>
[[Category: Large Structures]]
[[Category: Pyrococcus horikoshii OT3]]
[[Category: Bohnsack MT]]
[[Category: Duchardt-Ferner E]]
[[Category: Hennig R]]
[[Category: Martin R]]
[[Category: Mirus O]]
[[Category: Safferthal C]]
[[Category: Schleiff E]]
[[Category: Veith T]]
[[Category: Weis B]]
[[Category: Woehnert J]]
[[Category: Wurm JP]]