Cooperative stabilization of Zn(2+):DNA complexes through netropsin binding in the minor groove of FdU-substituted DNA.
Cooperative stabilization of Zn(2+):DNA complexes through netropsin binding in the minor groove of FdU-substituted DNA.
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DOI:
10.1080/07391102.2012.732343
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发表时间:
2013
影响因子:
4.4
通讯作者:
Gmeiner WH
中科院分区:
文献类型:
--
作者:
Ghosh S;Salsbury FR Jr;Horita DA;Gmeiner WH
The simultaneous binding of netropsin in the minor groove and Zn2+ in the major groove of a DNA hairpin that includes 10 consecutive FdU nucleotides at the 3′-terminus (3’FdU) was demonstrated based upon NMR spectroscopy, circular dichroism (CD), and computational modeling studies. The resulting Zn2+ /netropsin:3’FdU complex had very high thermal stability with aspects of the complex intact at 85 °C, conditions that result in complete dissociation of Mg2+ complexes. CD and 19F NMR spectroscopy were consistent with Zn2+ binding in the major groove of the DNA duplex and utilizing F5 and O4 of consecutive FdU nucleotides as ligands with FdU nucleotides hemi-deprotonated in the complex. Netropsin is bound in the minor groove of the DNA duplex based upon 2D NOESY data demonstrating contacts between AH2 1H and netropsin 1H resonances. The Zn2+/netropsin:3’FdU complex displayed increased cytotoxicity towards PC3 prostate cancer (PCa) cells relative to the constituent components or separate complexes (e.g. Zn2+:3’FdU) indicating that this new structural motif may be therapeutically useful for PCa treatment.
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影响因子:
2.3
作者:
Gmeiner WH;Salsbury F Jr;Olsen CM;Marky LA
通讯作者:
Marky LA
影响因子:
2.7
作者:
DELAGLIO, F;GRZESIEK, S;BAX, A
通讯作者:
BAX, A
影响因子:
3.5
作者:
Hartwig, Andrea
通讯作者:
Hartwig, Andrea
影响因子:
11.2
作者:
Liao, ZY;Sordet, O;Pommier, Y
通讯作者:
Pommier, Y
影响因子:
5.4
作者:
Van Hecke, K;Nam, PC;Van Meervelt, L
通讯作者:
Van Meervelt, L