The Cucurbit[7]Uril-Based Supramolecular Chemistry for Reversible B/Z-DNA Transition.
The Cucurbit[7]Uril-Based Supramolecular Chemistry for Reversible B/Z-DNA Transition.
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基于葫芦[7]Uril的可逆B/Z-DNA转变的超分子化学
DOI:
10.1002/advs.201800231
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发表时间:
2018-07
期刊:
影响因子:
--
通讯作者:
Zhou X
中科院分区:
文献类型:
--
作者:
Wang SR;Wang JQ;Xu GH;Wei L;Fu BS;Wu LY;Song YY;Yang XR;Li C;Liu SM;Zhou X
As a left‐handed helical structure, Z‐DNA is biologically active and it may be correlated with transcription and genome stability. Until recently, it remained a significant challenge to control the B/Z‐DNA transition under physiological conditions. The current study represents the first to reversibly control B/Z‐DNA transition using cucurbit[7]uril‐based supramolecular approach. It is demonstrated that cucurbit[7]uril can encapsulate the central butanediamine moiety [HN(CH2)4NH] and reverses Z‐DNA caused by spermine back to B‐DNA. The subsequent treatment with 1‐adamantanamine disassembles the cucurbit[7]uril/spermine complex and readily induces reconversion of B‐ into Z‐DNA. The DNA conformational change is unequivocally demonstrated using different independent methods. Direct evidence for supramolecular interactions involved in DNA conformational changes is further provided. These findings can therefore open a new route to control DNA helical structure in a reversible way.
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影响因子:
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