Reverse DNA translocation through a solid-state nanopore by magnetic tweezers.
Reverse DNA translocation through a solid-state nanopore by magnetic tweezers.
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DOI:
10.1088/0957-4484/20/18/185101
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发表时间:
2009-05-06
期刊:
影响因子:
3.5
通讯作者:
Ling XS
中科院分区:
文献类型:
--
作者:
Peng H;Ling XS
Voltage-driven DNA translocation through nanopores has attracted wide interest for many potential applications in molecular biology and biotechnology. However, it is intrinsically difficult to control the DNA motion in standard DNA translocation processes in which a strong electric field is required in drawing DNA into the pore, but it also leads to uncontrollable fast DNA translocation. Here we explore a new type of DNA translocation. We dub it ‘reverse DNA translocation’, in which the DNA is pulled through a nanopore mechanically by a magnetic bead, driven by a magnetic-field gradient. This technique is compatible with simultaneous ionic current measurements and is suitable for multiple nanopores, paving the way for large scale applications. We report the first experiment of reverse DNA translocation through a solid-state nanopore using magnetic tweezers.
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