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- W1569365735 abstract "Microtubule (MT) polymerization dynamics, which are crucial to eukaryotic life and are the target of important anticancer agents, result from the addition and loss of 8-nm-long tubulin-dimer subunits. Addition and loss of one or a few subunits cannot be observed at the spatiotemporal resolution of conventional microscopy, and requires development of approaches with higher resolution. Here we describe an assay in which one end of an MT abuts a barrier, and MT length changes are coupled to the movement of an optically trapped bead, the motion of which is tracked with high resolution. We detail assay execution, including preparation of the experimental chamber and orientation of the MT against the barrier. We describe design requirements for the experimental apparatus and barriers, and preparation of materials including stable, biotinylated MT seeds from which growth is initiated and NeutrAvidin-coated beads. Finally, we discuss advantages of moving the optical trap such that it applies a constant force (force clamping), detection limits, the importance of high temporal resolution, data analysis, and potential sources of experimental artifacts." @default.
- W1569365735 created "2016-06-24" @default.
- W1569365735 creator A5033594856 @default.
- W1569365735 creator A5039646884 @default.
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- W1569365735 date "2010-01-01" @default.
- W1569365735 modified "2023-10-18" @default.
- W1569365735 title "Nanometer-Resolution Microtubule Polymerization Assays Using Optical Tweezers and Microfabricated Barriers" @default.
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- W1569365735 doi "https://doi.org/10.1016/s0091-679x(10)95012-7" @default.
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- W1569365735 hasPublicationYear "2010" @default.
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