ISDA: 5OV2

Deposition Date 2017-08-27

Release Date 2017-10-18

Last Version Date 2024-05-15

Entry Detail

PDB ID:

5OV2

Keywords:

DNA

Title:

2'F-ANA-G modified quadruplex with a flipped tetrad

Biological Source:

Source Organism:

synthetic construct (Taxon ID: 32630)

Method Details:

Experimental Method:

SOLUTION NMR

Conformers Calculated:

Conformers Submitted:

Selection Criteria:

all calculated structures submitted

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Macromolecular Entities

Polymer Type:polydeoxyribonucleotide
Molecule:artificial quadruplex with propeller, diagonal, and lateral loop
Chain IDs:A (auth: X)
Chain Length:22
Number of Molecules:1
Biological Source:synthetic construct

Ligand Molecules

Primary Citation

Nonconventional C-HF Hydrogen Bonds Support a Tetrad Flip in Modified G-Quadruplexes.

Dickerhoff, J, Weisz, K.Show

J Phys Chem Lett 8 5148 5152 (2017)

PMID: 28976755 DOI: 10.1021/acs.jpclett.7b02428

Abstact

A G-quadruplex adopting a (3 + 1)-hybrid structure was substituted at its 5'-tetrad by 2'-deoxy-2'-fluoro-arabinoguanosine (FaraG) analogs. Incorporation of anti-favoring FaraG at syn-positions of the 5'-outer tetrad induced a reversal of the tetrad polarity without noticeably compromising the quadruplex stability. This conformational change is shown to be promoted by nonconventional C-H···F hydrogen bonds acting within the anti-FaraG residues.

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Protein

Chemical

Disease

Primary Citation of related structures