2led: Difference between revisions
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New page: '''Unreleased structure''' The entry 2led is ON HOLD Authors: Trajkovski, M., Plavec, J., Webba da Silva, M. Description: Solution-state structures of monomeric and dimeric G-quadruple... |
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==Unique structural features of interconverting monomeric and dimeric G-quadruplexes adopted by a sequence from intron of N-myc gene== | |||
<StructureSection load='2led' size='340' side='right'caption='[[2led]]' scene=''> | |||
== Structural highlights == | |||
<table><tr><td colspan='2'>[[2led]] is a 2 chain structure. Full experimental information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=2LED OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=2LED FirstGlance]. <br> | |||
</td></tr><tr id='method'><td class="sblockLbl"><b>[[Empirical_models|Method:]]</b></td><td class="sblockDat" id="methodDat">Solution NMR</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=2led FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=2led OCA], [https://pdbe.org/2led PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=2led RCSB], [https://www.ebi.ac.uk/pdbsum/2led PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=2led ProSAT]</span></td></tr> | |||
</table> | |||
<div style="background-color:#fffaf0;"> | |||
== Publication Abstract from PubMed == | |||
A multidimensional heteronuclear NMR study has demonstrated that a guanine-rich DNA oligonucleotide originating from the N-myc gene folds into G-quadruplex structures in the presence of K(+), NH(4)(+), and Na(+) ions. A monomeric G-quadruplex formed in K(+) ion containing solution exhibits three G-quartets and flexible propeller-type loops. The 3D structure with three single nucleotide loops represents a missing element in structures of parallel G-quadruplexes. The structural features together with the high temperature stability are suggestive of the specific biological role of G-quadruplex formation within the intron of the N-myc gene. An increase in K(+) ion and oligonucleotide concentrations resulted in transformation of the monomeric G-quadruplex into a dimeric form. The dimeric G-quadruplex exhibits six stacked G-quartets, parallel strand orientations, and propeller-type loops. A link between the third and the fourth G-quartets consists of two adenine residues that are flipped out to facilitate consecutive stacking of six G-quartets. | |||
Unique Structural Features of Interconverting Monomeric and Dimeric G-Quadruplexes Adopted by a Sequence from the Intron of the N-myc Gene.,Trajkovski M, Webba da Silva M, Plavec J J Am Chem Soc. 2012 Mar 7;134(9):4132-41. Epub 2012 Feb 22. PMID:22303871<ref>PMID:22303871</ref> | |||
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.<br> | |||
</div> | |||
<div class="pdbe-citations 2led" style="background-color:#fffaf0;"></div> | |||
== References == | |||
<references/> | |||
__TOC__ | |||
</StructureSection> | |||
[[Category: Large Structures]] | |||
[[Category: Plavec J]] | |||
[[Category: Trajkovski M]] | |||
[[Category: Webba da Silva M]] | |||
Latest revision as of 05:42, 15 May 2024
Unique structural features of interconverting monomeric and dimeric G-quadruplexes adopted by a sequence from intron of N-myc gene
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