View source for 6vwt


==Transitional unit cell 1 of adenine riboswitch aptamer crystal phase transition upon ligand binding==
<StructureSection load='6vwt' size='340' side='right'caption='[[6vwt]], [[Resolution|resolution]] 3.03&Aring;' scene=''>
== Structural highlights ==
<table><tr><td colspan='2'>[[6vwt]] is a 2 chain structure with sequence from [https://en.wikipedia.org/wiki/Vibrio_vulnificus Vibrio vulnificus]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=6VWT OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=6VWT 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]] 3.03&#8491;</td></tr>
<tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=ADE:ADENINE'>ADE</scene>, <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=6vwt FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=6vwt OCA], [https://pdbe.org/6vwt PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=6vwt RCSB], [https://www.ebi.ac.uk/pdbsum/6vwt PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=6vwt ProSAT]</span></td></tr>
</table>
<div style="background-color:#fffaf0;">
== Publication Abstract from PubMed ==
Time-resolved studies of biomacromolecular crystals have been limited to systems involving only minute conformational changes within the same lattice. Ligand-induced changes greater than several angstroms, however, are likely to result in solid-solid phase transitions, which require a detailed understanding of the mechanistic interplay between conformational and lattice transitions. Here we report the synchronous behavior of the adenine riboswitch aptamer RNA in crystal during ligand-triggered isothermal phase transitions. Direct visualization using polarized video microscopy and atomic force microscopy shows that the RNA molecules undergo cooperative rearrangements that maintain lattice order, whose cell parameters change distinctly as a function of time. The bulk lattice order throughout the transition is further supported by time-resolved diffraction data from crystals using an X-ray free electron laser. The synchronous molecular rearrangements in crystal provide the physical basis for studying large conformational changes using time-resolved crystallography and micro/nanocrystals.

Synchronous RNA conformational changes trigger ordered phase transitions in crystals.,Ramakrishnan S, Stagno JR, Conrad CE, Ding J, Yu P, Bhandari YR, Lee YT, Pauly G, Yefanov O, Wiedorn MO, Knoska J, Oberthur D, White TA, Barty A, Mariani V, Li C, Brehm W, Heinz WF, Magidson V, Lockett S, Hunter MS, Boutet S, Zatsepin NA, Zuo X, Grant TD, Pandey S, Schmidt M, Spence JCH, Chapman HN, Wang YX Nat Commun. 2021 Mar 19;12(1):1762. doi: 10.1038/s41467-021-21838-5. PMID:33741910<ref>PMID:33741910</ref>

From MEDLINE&reg;/PubMed&reg;, a database of the U.S. National Library of Medicine.<br>
</div>
<div class="pdbe-citations 6vwt" style="background-color:#fffaf0;"></div>

==See Also==
*[[Riboswitch 3D structures|Riboswitch 3D structures]]
== References ==
<references/>
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</StructureSection>
[[Category: Large Structures]]
[[Category: Vibrio vulnificus]]
[[Category: Stagno JR]]
[[Category: Wang Y-X]]