ISDA

Deposition Date 2015-12-02

Release Date 2016-02-17

Last Version Date 2024-05-15

Entry Detail

PDB ID:

2N9Q

Keywords:

DNA

Title:

Photoswitchable G-quadruplex

Biological Source:

Source Organism:

(Taxon ID: ) (Taxon ID: )

Method Details:

Experimental Method:

SOLUTION NMR

Conformers Calculated:

200

Conformers Submitted:

Selection Criteria:

structures with the lowest energy

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Macromolecular Entities

Polymer Type:polydeoxyribonucleotide
Molecule:DNA (5'-D(*GP*GP*(AZW)P*GP*G)-3')
Chain IDs:A, B, C, D
Chain Length:5
Number of Molecules:4
Biological Source:

Ligand Molecules

Primary Citation

Photoresponsive Formation of an Intermolecular Minimal G-Quadruplex Motif.

Thevarpadam, J, Bessi, I, Binas, O, Goncalves, D.P, Slavov, C, Jonker, H.R, Richter, C, Wachtveitl, J, Schwalbe, H, Heckel, A.Show

Angew.Chem.Int.Ed.Engl. 55 2738 2742 (2016)

PMID: 26805928 DOI: 10.1002/anie.201510269

Abstact

The ability of three different bifunctional azobenzene linkers to enable the photoreversible formation of a defined intermolecular two-tetrad G-quadruplex upon UV/Vis irradiation was investigated. Circular dichroism and NMR spectroscopic data showed the formation of G-quadruplexes with K(+) ions at room temperature in all three cases with the corresponding azobenzene linker in an E conformation. However, only the para-para-substituted azobenzene derivative enables photoswitching between a nonpolymorphic, stacked, tetramolecular G-quadruplex and an unstructured state after E-Z isomerization.

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Protein

Chemical

Disease

Primary Citation of related structures