Optical control of fast and processive engineered myosins in vitro and in living cells.

Optical control of fast and processive engineered myosins in vitro and in living cells.
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体外和活细胞中快速和进程工程肌球蛋白的光学控制。

DOI:
10.1038/s41589-021-00740-7
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发表时间:
2021-05
影响因子:
14.8
通讯作者:
Bryant, Zev
Bryant, Zev
中科院分区:
生物学1区
文献类型:
--
作者:
Ruijgrok, Paul V.;Ghosh, Rajarshi P.;Zemsky, Sasha;Nakamura, Muneaki;Gong, Rui;Ning, Lin;Chen, Robert;Vachharajani, Vipul T.;Chu, Alexander E.;Anand, Namrata;Eguchi, Raphael R.;Huang, Po-Ssu;Lin, Michael Z.;Alushin, Gregory M.;Liphardt, Jan T.;Bryant, Zev

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Precision tools for spatiotemporal control of cytoskeletal motor function are needed to dissect fundamental biological processes ranging from intracellular transport to cell migration and division. Direct optical control of motor speed and direction is one promising approach, but it remains a challenge to engineer controllable motors with desirable properties such as speed and processivity required for transport applications in living cells. Here we develop engineered myosin motors that combine large optical modulation depths with high velocities, and create processive myosin motors with optically controllable directionality. We characterize the performance of the motors using in vitro motility assays, single-molecule tracking, and live-cell imaging. Bidirectional processive motors move efficiently toward the tips of cellular protrusions in the presence of blue light, and can transport molecular cargos in cells. Robust gearshifting myosins will further enable programmable transport in contexts ranging from in vitro active matter reconstitutions to microfabricated systems that harness molecular propulsion.
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