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==Monomer-dimer equilibrium for 5'-5' stacking of propeller-type parallel-stranded G-quadruplexes: NMR structural study==
<StructureSection load='2lk7' size='340' side='right'caption='[[2lk7]]' scene=''>
== Structural highlights ==
<table><tr><td colspan='2'>[[2lk7]] is a 1 chain structure. Full experimental information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=2LK7 OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=2LK7 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=2lk7 FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=2lk7 OCA], [https://pdbe.org/2lk7 PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=2lk7 RCSB], [https://www.ebi.ac.uk/pdbsum/2lk7 PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=2lk7 ProSAT]</span></td></tr>
</table>
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== Publication Abstract from PubMed ==
Guanine-rich sequence motifs, which contain tracts of three consecutive guanines connected by single non-guanine nucleotides, are abundant in the human genome and can form a robust G-quadruplex structure with high stability. Herein, by using NMR spectroscopy, we investigate the equilibrium between monomeric and 5'-5' stacked dimeric propeller-type G-quadruplexes that are formed by DNA sequences containing GGGT motifs. We show that the monomer-dimer equilibrium depends on a number of parameters, including the DNA concentration, DNA flanking sequences, the concentration and type of cations, and the temperature. We report on the high-definition structure of a simple monomeric G-quadruplex containing three single-residue loops, which could serve as a reference for propeller-type G-quadruplex structures in solution.

Monomer-Dimer Equilibrium for the 5'-5' Stacking of Propeller-Type Parallel-Stranded G-Quadruplexes: NMR Structural Study.,Do NQ, Phan AT Chemistry. 2012 Sep 27. doi: 10.1002/chem.201103295. PMID:23019076<ref>PMID:23019076</ref>

From MEDLINE&reg;/PubMed&reg;, a database of the U.S. National Library of Medicine.<br>
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== References ==
<references/>
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</StructureSection>
[[Category: Large Structures]]
[[Category: Do NQ]]
[[Category: Phan AT]]