5HIX image
Deposition Date 2016-01-12
Release Date 2016-11-02
Last Version Date 2024-01-10
Entry Detail
PDB ID:
5HIX
Keywords:
DNA
Title:
Cocrystal structure of an anti-parallel DNA G-quadruplex and a tetra-Quinoline Foldamer
Biological Source:
Source Organism:
synthetic construct (Taxon ID: 32630)
Method Details:
Experimental Method:
X-RAY DIFFRACTION
Resolution:
2.48 Å
R-Value Free:
0.28
R-Value Work:
0.22
R-Value Observed:
0.23
Space Group:
P 41
5HIX validation report
Macromolecular Entities
Polymer Type:polydeoxyribonucleotide
Molecule:Dimeric G-quadruplex
Chain IDs:A, B
Chain Length:12
Number of Molecules:2
Biological Source:synthetic construct
Ligand Molecules
61Q
K
Primary Citation
Multivalent Interactions between an Aromatic Helical Foldamer and a DNA G-Quadruplex in the Solid State.
Chembiochem 17 1911 1914 (2016)
PMID: 27472456 DOI: 10.1002/cbic.201600281

Abstact

Quinoline-based oligoamide foldamers have been identified as a potent class of ligands for G-quadruplex DNA. Their helical structure is thought to target G-quadruplex loops or grooves and not G-tetrads. We report a co-crystal structure of the antiparallel hairpin dimeric DNA G-quadruplex (G4 T4 G4)2 with tetramer 1-a helically folded oligo-quinolinecarboxamide bearing cationic side chains-that is consistent with this hypothesis. Multivalent foldamer-DNA interactions that modify the packing of (G4 T4 G4)2 in the solid state are observed.

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Primary Citation of related structures
5HIX