Sensing force and charge at the nanoscale with a single-molecule tether.
Sensing force and charge at the nanoscale with a single-molecule tether.
复制标题
使用单分子系链在纳米尺度上感测力和电荷。
DOI:
10.1039/d1nr01970h
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发表时间:
2021-08-07
期刊:
影响因子:
6.7
通讯作者:
Faez S
中科院分区:
文献类型:
--
作者:
Meng X ;Kukura P ;Faez S
Measuring the electrophoretic mobility of molecules is a powerful experimental approach for investigating biomolecular processes. A frequent challenge in the context of single-particle measurements is throughput, limiting the obtainable statistics. Here, we present a molecular force sensor and charge detector based on parallelised imaging and tracking of tethered double-stranded DNA functionalised with charged nanoparticles interacting with an externally applied electric field. Tracking the position of the tethered particle with simultaneous nanometre precision and microsecond temporal resolution allows us to detect and quantify the electrophoretic force down to the sub-piconewton scale. Furthermore, we demonstrate that this approach is suitable for detecting changes to the particle charge state, as induced by the addition of charged biomolecules or changes to pH. Our approach provides an alternative route to studying structural and charge dynamics at the single molecule level. Tracking the position of tethered nanoparticles with simultaneous nanometre precision and microsecond temporal resolution allows researchers to detect and quantify electrophoretic forces down to the sub-piconewton scale.
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影响因子:
14.8
作者:
Larson J;Kirk M;Drier EA;O'Brien W;MacKay JF;Friedman LJ;Hoskins AA
通讯作者:
Hoskins AA
DOI:
10.1073/pnas.211400898
发表时间:
2001-10-23
影响因子:
11.1
作者:
Ando, T;Kodera, N;Toda, A
通讯作者:
Toda, A
影响因子:
13.3
作者:
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通讯作者:
Dekker, Cees
影响因子:
10.8
作者:
De Vlaminck, Iwijn;Henighan, Thomas;Dekker, Cees
通讯作者:
Dekker, Cees
影响因子:
3.4
作者:
Halvorsen, Ken;Wong, Wesley P.
通讯作者:
Wong, Wesley P.