ArticleScientific reports2018
Polymerisation force of a rigid filament bundle: diffusive interaction leads to sublinear force-number scaling.
Article in Scientific reports, 2018. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 5 papers.
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Who cites it
5 citing papers in PubMed, 9 citations in OpenAlex.
- EB3-informed dynamics of the microtubule stabilizing cap during stalled growth.Biophysical journal · 2025Article
- Force-velocity relation and load-sharing in the linear polymerization ratchet revisited: the effects of barrier diffusion.The European physical journal. E, Soft matter · 2022Article
- Spatio-temporal correlations between catastrophe events in a microtubule bundle: a computational study.European biophysics journal : EBJ · 2020Article
- From isolated structures to continuous networks: A categorization of cytoskeleton-based motile engineered biological microstructures.Wiley interdisciplinary reviews. Nanomedicine and nanobiotechnology · 2019Review
- Actin filaments pushing against a barrier: Comparison between two force generation mechanisms.The European physical journal. E, Soft matter · 2019Article
Corrections and comments
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Authors and funding
2 authors at 2 institutions in 1 country.
Funding
No grant is acknowledged in the PubMed record.
Abstract
Polymerising filaments generate force against an obstacle, as in, e.g., microtubule-kinetochore interactions in the eukaryotic cell. Earlier studies of this problem have not included explicit three-dimensional monomer diffusion, and consequently, missed out on two important aspects: (i) the barrier, even when it is far from the polymers, affects free diffusion of monomers and reduces their adsorption at the tips, while (ii) parallel filaments could interact through the monomer density field ("diffusive coupling"), leading to negative interference between them. In our study, both these effects are included and their consequences investigated in detail. A mathematical treatment based on a set of continuum Fokker-Planck equations for combined filament-wall dynamics suggests that the barrier-induced monomer depletion reduces the growth velocity and also the stall force, while the total force produced by many filaments remains additive. However, Brownian dynamics simulations show that the linear force-number scaling holds only when the filaments are far apart; when they are arranged close together, forming a bundle, sublinear scaling of force with number appears, which could be attributed to diffusive interaction between the growing polymer tips.
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Registered trials
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