9c6j
From Proteopedia
(Difference between revisions)
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| - | '''Unreleased structure''' | ||
| - | + | ==Group IIC intron embedded with the TPP riboswitch== | |
| + | <StructureSection load='9c6j' size='340' side='right'caption='[[9c6j]], [[Resolution|resolution]] 2.41Å' scene=''> | ||
| + | == Structural highlights == | ||
| + | <table><tr><td colspan='2'>[[9c6j]] is a 1 chain structure with sequence from [https://en.wikipedia.org/wiki/Oceanobacillus_iheyensis Oceanobacillus iheyensis]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=9C6J OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=9C6J FirstGlance]. <br> | ||
| + | </td></tr><tr id='method'><td class="sblockLbl"><b>[[Empirical_models|Method:]]</b></td><td class="sblockDat" id="methodDat">Electron Microscopy, [[Resolution|Resolution]] 2.41Å</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=9c6j FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=9c6j OCA], [https://pdbe.org/9c6j PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=9c6j RCSB], [https://www.ebi.ac.uk/pdbsum/9c6j PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=9c6j ProSAT]</span></td></tr> | ||
| + | </table> | ||
| + | <div style="background-color:#fffaf0;"> | ||
| + | == Publication Abstract from PubMed == | ||
| + | Cryo-EM structure determination of protein-free RNAs has remained difficult with most attempts yielding low to moderate resolution and lacking nucleotide-level detail. These difficulties are compounded for small RNAs as cryo-EM is inherently more difficult for lower molecular weight macromolecules. Here we present a strategy for fusing small RNAs to a group II intron that yields high resolution structures of the appended RNA, which we demonstrate with the 86-nucleotide thiamine pyrophosphate (TPP) riboswitch, and visualizing the riboswitch ligand binding pocket at 2.5 A resolution. We also determined the structure of the ligand-free apo state and observe that the aptamer domain of the riboswitch undergoes a large-scale conformational change upon ligand binding, illustrating how small molecule binding to an RNA can induce large effects on gene expression. This study both sets a new standard for cryo-EM riboswitch visualization and offers a versatile strategy applicable to a broad range of small to moderate-sized RNAs, which were previously intractable for high-resolution cryo-EM studies. | ||
| - | + | Scaffold-enabled high-resolution cryo-EM structure determination of RNA.,Haack DB, Rudolfs B, Jin S, Weeks KM, Toor N bioRxiv [Preprint]. 2024 Jun 10:2024.06.10.598011. doi: , 10.1101/2024.06.10.598011. PMID:38915706<ref>PMID:38915706</ref> | |
| - | + | From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.<br> | |
| - | [[Category: | + | </div> |
| + | <div class="pdbe-citations 9c6j" style="background-color:#fffaf0;"></div> | ||
| + | == References == | ||
| + | <references/> | ||
| + | __TOC__ | ||
| + | </StructureSection> | ||
| + | [[Category: Large Structures]] | ||
| + | [[Category: Oceanobacillus iheyensis]] | ||
| + | [[Category: Toor N]] | ||
Current revision
Group IIC intron embedded with the TPP riboswitch
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