The speed and direction of myosin and kinesin motors can be optically controlled by adding a protein domain that changes conformation in response to blue light.
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Reck-Peterson, S. Shifting gears with light. Nature Nanotech 9, 661–662 (2014). https://doi.org/10.1038/nnano.2014.188
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DOI: https://doi.org/10.1038/nnano.2014.188
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