When force met fluorescence: single-molecule manipulation and visualization of protein–DNA interactions

GNL Chua, S Liu - Annual Review of Biophysics, 2024 - annualreviews.org
Myriad DNA-binding proteins undergo dynamic assembly, translocation, and conformational
changes while on DNA or alter the physical configuration of the DNA substrate to control its …

Unravelling the mechanisms of Type 1A topoisomerases using single-molecule approaches

D Spakman, JAM Bakx, AS Biebricher… - Nucleic acids …, 2021 - academic.oup.com
Topoisomerases are essential enzymes that regulate DNA topology. Type 1A family
topoisomerases are found in nearly all living organisms and are unique in that they require …

[PDF][PDF] 激光双光镊在单分子生物物理中的研究进展

巩凡, 任煜轩 - Chinese Journal of Lasers, 2023 - researching.cn
摘要光镊采用聚焦的激光束束缚微米, 纳米级的粒子, 具有亚皮牛级的力分辨率和亚毫秒级的
时间响应, 在单分子生物物理中具有广泛的应用. 通过化学耦链将生物大分子连接到高分子微球 …

Single-molecule observation of DNA compaction by meiotic protein SYCP3

JL Syrjänen, I Heller, A Candelli, OR Davies… - Elife, 2017 - elifesciences.org
In a previous paper (Syrjänen et al., 2014), we reported the first structural characterisation of
a synaptonemal complex (SC) protein, SYCP3, which led us to propose a model for its role …

Cooperative effects on the compaction of DNA fragments by the nucleoid protein H-NS and the crowding agent PEG probed by magnetic tweezers

M Cristofalo, CA Marrano, D Salerno, R Corti… - … et Biophysica Acta (BBA …, 2020 - Elsevier
Background DNA bridging promoted by the H-NS protein, combined with the compaction
induced by cellular crowding, plays a major role in the structuring of the E. coli genome …

[HTML][HTML] DNA replication machinery: Insights from in vitro single-molecule approaches

R Bocanegra, GAI Plaza, CR Pulido, B Ibarra - Computational and …, 2021 - Elsevier
The replisome is the multiprotein molecular machinery that replicates DNA. The replisome
components work in precise coordination to unwind the double helix of the DNA and …

Implementation of 3D Multi-Color Fluorescence Microscopy in a Quadruple Trap Optical Tweezers System

AEC Meijering, JAM Bakx, T Man, I Heller… - … Tweezers: Methods and …, 2022 - Springer
Recent advances in the design and measurement capabilities of optical tweezers
instruments, and especially the combination with multi-color fluorescence detection, have …

Optical Tweezers to Force Information out of Biological and Synthetic Systems One Molecule at a Time

R Bocanegra, M Ortiz-Rodríguez, IP Garcia-Abadillo… - Biophysica, 2022 - mdpi.com
Over the last few decades, in vitro single-molecule manipulation techniques have enabled
the use of force and displacement as controlled variables in biochemistry. Measuring the …

Influence of permittivity on gradient force exerted on Mie spheres

J Chen, K Li, X Li - JOSA A, 2018 - opg.optica.org
In optical trapping, whether a particle could be stably trapped into the focus region greatly
depends on the strength of the gradient force. Individual theoretical study on gradient force …

Multi-parameter measurements of conformational dynamics in nucleic acids and nucleoprotein complexes

IE Ivanov, Z Bryant - Methods, 2019 - Elsevier
Biological macromolecules undergo dynamic conformational changes. Single-molecule
methods can track such structural rearrangements in real time. However, while the structure …