6tnn: Difference between revisions
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==== | ==Mini-RNase III (Mini-III) bound to 50S ribosome with precursor 23S rRNA== | ||
<StructureSection load='6tnn' size='340' side='right'caption='[[6tnn]]' scene=''> | <StructureSection load='6tnn' size='340' side='right'caption='[[6tnn]], [[Resolution|resolution]] 3.07Å' scene=''> | ||
== Structural highlights == | == Structural highlights == | ||
<table><tr><td colspan='2'>Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id= OCA]. For a <b>guided tour on the structure components</b> use [ | <table><tr><td colspan='2'>[[6tnn]] is a 11 chain structure with sequence from [https://en.wikipedia.org/wiki/Bacillus_subtilis_subsp._subtilis_str._168 Bacillus subtilis subsp. subtilis str. 168]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=6TNN OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=6TNN FirstGlance]. <br> | ||
</td></tr><tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[ | </td></tr><tr id='method'><td class="sblockLbl"><b>[[Empirical_models|Method:]]</b></td><td class="sblockDat" id="methodDat">Electron Microscopy, [[Resolution|Resolution]] 3.07Å</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>, <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=6tnn FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=6tnn OCA], [https://pdbe.org/6tnn PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=6tnn RCSB], [https://www.ebi.ac.uk/pdbsum/6tnn PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=6tnn ProSAT]</span></td></tr> | |||
</table> | </table> | ||
== Function == | |||
[https://www.uniprot.org/uniprot/RL10_BACSU RL10_BACSU] Forms part of the ribosomal stalk, playing a central role in the interaction of the ribosome with GTP-bound translation factors (such as IF-2, EF-Tu, EF-G and RF3). | |||
<div style="background-color:#fffaf0;"> | |||
== Publication Abstract from PubMed == | |||
The pathways for ribosomal RNA (rRNA) maturation diverge greatly among the domains of life. In the Gram-positive model bacterium, Bacillus subtilis, the final maturation steps of the two large ribosomal subunit (50S) rRNAs, 23S and 5S pre-rRNAs, are catalyzed by the double-strand specific ribonucleases (RNases) Mini-RNase III and RNase M5, respectively. Here we present a protocol that allowed us to solve the 3.0 and 3.1 A resolution cryoelectron microscopy structures of these RNases poised to cleave their pre-rRNA substrates within the B. subtilis 50S particle. These data provide the first structural insights into rRNA maturation in bacteria by revealing how these RNases recognize and process double-stranded pre-rRNA. Our structures further uncover how specific ribosomal proteins act as chaperones to correctly fold the pre-rRNA substrates and, for Mini-III, anchor the RNase to the ribosome. These r-proteins thereby serve a quality-control function in the process from accurate ribosome assembly to rRNA processing. | |||
Structures of B. subtilis Maturation RNases Captured on 50S Ribosome with Pre-rRNAs.,Oerum S, Dendooven T, Catala M, Gilet L, Degut C, Trinquier A, Bourguet M, Barraud P, Cianferani S, Luisi BF, Condon C, Tisne C Mol Cell. 2020 Sep 23. pii: S1097-2765(20)30616-X. doi:, 10.1016/j.molcel.2020.09.008. PMID:32991829<ref>PMID:32991829</ref> | |||
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.<br> | |||
</div> | |||
<div class="pdbe-citations 6tnn" style="background-color:#fffaf0;"></div> | |||
==See Also== | |||
*[[Ribonuclease 3D structures|Ribonuclease 3D structures]] | |||
*[[Ribosome 3D structures|Ribosome 3D structures]] | |||
== References == | |||
<references/> | |||
__TOC__ | __TOC__ | ||
</StructureSection> | </StructureSection> | ||
[[Category: Bacillus subtilis subsp. subtilis str. 168]] | |||
[[Category: Large Structures]] | [[Category: Large Structures]] | ||
[[Category: | [[Category: Barraud P]] | ||
[[Category: Catala M]] | |||
[[Category: Condon C]] | |||
[[Category: Degut C]] | |||
[[Category: Dendooven T]] | |||
[[Category: Gilet L]] | |||
[[Category: Luisi B]] | |||
[[Category: Oerum S]] | |||
[[Category: Tisne C]] | |||
[[Category: Trinquier A]] | |||