Delta chirality ruthenium 'light-switch' complexes can bind in the minor groove of DNA with five different binding modes.
Delta chirality ruthenium 'light-switch' complexes can bind in the minor groove of DNA with five different binding modes.
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DOI:
10.1093/nar/gkw753
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发表时间:
2016-11-02
影响因子:
14.9
通讯作者:
Cardin CJ
中科院分区:
文献类型:
--
作者:
Hall JP;Keane PM;Beer H;Buchner K;Winter G;Sorensen TL;Cardin DJ;Brazier JA;Cardin CJ
[Ru(phen)2(dppz)]2+ has been studied since the 1990s due to its ‘light-switch’ properties. It can be used as a luminescent DNA probe, with emission switched on through DNA binding. The luminescence observed is dependent on the solvent accessibility of the pyrazine nitrogen atoms, and therefore is sensitive to changes in both binding site of the cation and chromophore orientation. The compound is also chiral, and there are distinct differences between the enantiomers in terms of the emission behaviour when bound to a variety of DNA sequences. Whilst a number of binary DNA-complex X-ray crystal structures are available, most include the Λ enantiomer and there is very little structural information about binding of the Δ enantiomer. Here, we present the first X-ray crystal structure of a Δ enantiomer bound to well-matched DNA, in the absence of the other, Λ enantiomer. We show how the binding site observed here can be related to a more general pattern of motifs in the crystallographic literature and propose that the Δ enantiomer can bind with five different binding modes, offering a new hypothesis for the interpretation of solution data.
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影响因子:
15
作者:
BARTON, JK;DANISHEFSKY, AT;GOLDBERG, JM
通讯作者:
GOLDBERG, JM
影响因子:
15
作者:
HAQ, I;LINCOLN, P;CHAIRES, JB
通讯作者:
CHAIRES, JB
影响因子:
2.9
作者:
Olofsson, J;Önfelt, B;Lincoln, P
通讯作者:
Lincoln, P
DOI:
10.1002/anie.201502608
发表时间:
2015-07-13
期刊:
Angewandte Chemie (International ed. in English)
影响因子:
--
作者:
Keane PM;Poynton FE;Hall JP;Sazanovich IV;Towrie M;Gunnlaugsson T;Quinn SJ;Cardin CJ;Kelly JM
通讯作者:
Kelly JM
DOI:
10.1107/s0907444909052925
发表时间:
2010-02
期刊:
Acta crystallographica. Section D, Biological crystallography
影响因子:
--
作者:
Adams PD;Afonine PV;Bunkóczi G;Chen VB;Davis IW;Echols N;Headd JJ;Hung LW;Kapral GJ;Grosse-Kunstleve RW;McCoy AJ;Moriarty NW;Oeffner R;Read RJ;Richardson DC;Richardson JS;Terwilliger TC;Zwart PH
通讯作者:
Zwart PH