View source for 7ptq


==RNA origami 5-helix tile==
<StructureSection load='7ptq' size='340' side='right'caption='[[7ptq]], [[Resolution|resolution]] 4.08&Aring;' scene=''>
== Structural highlights ==
<table><tr><td colspan='2'>[[7ptq]] is a 1 chain structure with sequence from [https://en.wikipedia.org/wiki/Synthetic_construct Synthetic construct]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=7PTQ OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=7PTQ 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]] 4.08&#8491;</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=7ptq FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=7ptq OCA], [https://pdbe.org/7ptq PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=7ptq RCSB], [https://www.ebi.ac.uk/pdbsum/7ptq PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=7ptq ProSAT]</span></td></tr>
</table>
<div style="background-color:#fffaf0;">
== Publication Abstract from PubMed ==
RNA origami is a method for designing RNA nanostructures that can self-assemble through co-transcriptional folding with applications in nanomedicine and synthetic biology. However, to advance the method further, an improved understanding of RNA structural properties and folding principles is required. Here we use cryogenic electron microscopy to study RNA origami sheets and bundles at sub-nanometre resolution revealing structural parameters of kissing-loop and crossover motifs, which are used to improve designs. In RNA bundle designs, we discover a kinetic folding trap that forms during folding and is only released after 10 h. Exploration of the conformational landscape of several RNA designs reveal the flexibility of helices and structural motifs. Finally, sheets and bundles are combined to construct a multidomain satellite shape, which is characterized by individual-particle cryo-electron tomography to reveal the domain flexibility. Together, the study provides a structural basis for future improvements to the design cycle of genetically encoded RNA nanodevices.

Structure, folding and flexibility of co-transcriptional RNA origami.,McRae EKS, Rasmussen HO, Liu J, Boggild A, Nguyen MTA, Sampedro Vallina N, Boesen T, Pedersen JS, Ren G, Geary C, Andersen ES Nat Nanotechnol. 2023 Jul;18(7):808-817. doi: 10.1038/s41565-023-01321-6. Epub , 2023 Feb 27. PMID:36849548<ref>PMID:36849548</ref>

From MEDLINE&reg;/PubMed&reg;, a database of the U.S. National Library of Medicine.<br>
</div>
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== References ==
<references/>
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</StructureSection>
[[Category: Large Structures]]
[[Category: Synthetic construct]]
[[Category: Andersen ES]]
[[Category: McRae EKS]]