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- Corey E Monteith, Matthew E Brunner, Inna Djagaeva, Anthony M Bielecki, Joshua M Deutsch, William M Saxton
- Biophysical journal
- 2016

The transport of cytoplasmic components can be profoundly affected by hydrodynamics. Cytoplasmic streaming in Drosophila oocytes offers a striking example. Forces on fluid from kinesin-1 are initially directed by a disordered meshwork of microtubules, generating minor slow cytoplasmic flows. Subsequently, to mix incoming nurse cell cytoplasm with ooplasm, a… (More)

Large scale motion of cytoplasm called cytoplasmic streaming occurs in some large eukaryotic cells to stir the cells constituents. In Drosophila oocytes, microtubules have been observed to undergo undulating motion, curving to form travelling waves during cytoplasmic streaming. Here we show that this wave-like motion can be understood physically as due to… (More)

We analyze the nonlinear waves that propagate on a microtubule that is tethered at its minus end due to kinesin walking on it, as is seen during the fluid mixing caused by cytoplasmic streaming in Drosophila oocytes. The model we use assumes that the microtubule can be modeled as an elastic string in a viscous medium. The effect of the kinesin is to apply a… (More)

- Matthew Brunner, J M Deutsch
- Physical review. E, Statistical, nonlinear, and…
- 2011

The statistical mechanics of a linear noninteracting polymer chain with a large number of monomers is considered with fixed angular momentum. The radius of gyration for a linear polymer is derived exactly by functional integration. This result is then compared to simulations done with a large number of noninteracting rigid links at fixed angular momentum.… (More)

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