Robustness and modularity properties of a non-covalent DNA catalytic reaction.

Robustness and modularity properties of a non-covalent DNA catalytic reaction.
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DOI:
10.1093/nar/gkq088
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发表时间:
2010-07
影响因子:
14.9
通讯作者:
Winfree E
Winfree E
中科院分区:
生物学2区
文献类型:
--
作者:
Zhang DY;Winfree E

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核酸杂交和链位移的生物物理学已被用于合理设计一些纳米级结构和功能。近年来,分子扩增方法以非共价DNA催化反应的形式发展起来,其中单链DNA (ssDNA)分子催化多链复合物释放ssDNA产物分子。在这里,我们描述了一种基于链位移的催化反应的鲁棒性和特异性。我们发现设计的反应对催化剂的序列突变敏感,同时对各种杂质和分子噪声具有鲁棒性。这些特性促进了基于链置换的DNA组分在合成化学和生物反应网络中的结合。
The biophysics of nucleic acid hybridization and strand displacement have been used for the rational design of a number of nanoscale structures and functions. Recently, molecular amplification methods have been developed in the form of non-covalent DNA catalytic reactions, in which single-stranded DNA (ssDNA) molecules catalyze the release of ssDNA product molecules from multi-stranded complexes. Here, we characterize the robustness and specificity of one such strand displacement-based catalytic reaction. We show that the designed reaction is simultaneously sensitive to sequence mutations in the catalyst and robust to a variety of impurities and molecular noise. These properties facilitate the incorporation of strand displacement-based DNA components in synthetic chemical and biological reaction networks.
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