Scientific article
Open access

Kinesin-1 activity recorded in living cells with a precipitating dye

Published inNature Communications, vol. 12, no. 1463
Publication date2021

Kinesin-1 is a processive motor protein that uses ATP-derived energy to transport a variety of intracellular cargoes toward the cell periphery. The ability to visualize and monitor kinesin transport in live cells is critical to study the myriad of functions associated with cargo trafficking. Herein we report the discovery of a fluorogenic small molecule substrate (QPD-OTf) for kinesin-1 that yields a precipitating dye along its walking path on microtubules (MTs). QPD-OTf enables to monitor native kinesin-1 transport activity in cellulo without external modifications. In vitro assays show that kinesin-1 and MTs are sufficient to yield fluorescent crystals; in cells, kinesin-1 specific transport of cargo from the Golgi appears as trails of fluorescence over time. These findings are further supported by docking studies, which suggest the binding of the activity-based substrate in the nucleotide binding site of kinesin-1.

Citation (ISO format)
ANGERANI, Simona et al. Kinesin-1 activity recorded in living cells with a precipitating dye. In: Nature Communications, 2021, vol. 12, n° 1463. doi: 10.1038/s41467-021-21626-1
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Article (Published version)
ISSN of the journal2041-1723

Technical informations

Creation03/09/2021 9:59:00 AM
First validation03/09/2021 9:59:00 AM
Update time03/16/2023 12:14:15 AM
Status update03/16/2023 12:14:15 AM
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