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Chapters
- 00:04Introduction
- 00:59Assembly of the Microscopy Chamber
- 02:33Imaging Microtubule Bundles with 3‐Color TIRF
- 03:41Performing Optical Trap Experiments on Microtubule Bundles
- 06:02Results: Measuring Force Production by Kinesin‐5 and Frictional Force by PRC1
- 07:06Conclusion
Here, we present a protocol for reconstituting microtubule bundles in vitro and directly quantifying the forces exerted within them using simultaneous optical trapping and total internal reflection fluorescence microscopy. This assay allows for nanoscale-level measurement of the forces and displacements generated by protein ensembles within active microtubule networks.
Tags
Microtubule BundlesCytoskeletal NetworksForce MeasurementOptical TrapTIRF MicroscopySingle-molecule ExperimentsProtein ConcentrationProtein DensityMitosisNeural DevelopmentMuscle ContractionCell MigrationStreptavidinNeutrAvidinCaseinBiotinylated MicrotubulesRhodamine MicrotubulesRigor Kinesin-coated BeadsReaction Buffer
