ArticleProceedings of the National Academy of Sciences of the United States of America2024
Myosin-5 varies its step length to carry cargo straight along the irregular F-actin track.
Article in Proceedings of the National Academy of Sciences of the United States of America, 2024. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 6 papers.
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The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
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6 citing papers in PubMed, 43 citations in OpenAlex.
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- Visualizing Single V-ATPase Rotation Using Janus Nanoparticles.Nano letters · 2024Article
- Visualizing Single V-ATPase Rotation Using Janus Nanoparticles.bioRxiv : the preprint server for biology · 2024Article
- Article
- Myosin-5 varies its step length to carry cargo straight along the irregular F-actin track.Proceedings of the National Academy of Sciences of the United States of America · 2024Article
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13 authors at 3 institutions in 2 countries.
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Abstract
Molecular motors employ chemical energy to generate unidirectional mechanical output against a track while navigating a chaotic cellular environment, potential disorder on the track, and against Brownian motion. Nevertheless, decades of nanometer-precise optical studies suggest that myosin-5a, one of the prototypical molecular motors, takes uniform steps spanning 13 subunits (36 nm) along its F-actin track. Here, we use high-resolution interferometric scattering microscopy to reveal that myosin takes strides spanning 22 to 34 actin subunits, despite walking straight along the helical actin filament. We show that cumulative angular disorder in F-actin accounts for the observed proportion of each stride length, akin to crossing a river on variably spaced stepping stones. Electron microscopy revealed the structure of the stepping molecule. Our results indicate that both motor and track are soft materials that can adapt to function in complex cellular conditions.
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