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Bacterial Chromosomal Loci Move Subdiffusively through a Viscoelastic Cytoplasm
Open accessAbstract
Tracking of fluorescently labeled chromosomal loci in live bacterial cells reveals a robust scaling of the mean square displacement (MSD) as τ(0.39). We propose that the observed motion arises from relaxation of the Rouse modes of the DNA polymer within the viscoelastic environment of the cytoplasm. The time-averaged and ensemble-averaged MSD of chromosomal loci exhibit ergodicity, and the velocity autocorrelation function is negative at short time lags. These observations are most consistent with fractional Langevin motion and rule out a continuous time random walk model as an explanation for anomalous motion in vivo.
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Cites
Anomalous diffusion in disordered media: Statistical mechanisms, models and physical applications
Bouchaud, J.-P., & Georges, A. (1990) · Physics Reports · doi:10.1016/0370-1573(90)90099-n · Cited by 4,162
Cited by
Metzler, R., Jeon, J.-H., Cherstvy, A. G., & Barkai, E. (2014) · Phys. Chem. Chem. Phys. · doi:10.1039/c4cp03465a · Cited by 1,765
Mediator and RNA polymerase II clusters associate in transcription-dependent condensates
Cho, W.-K., Spille, J.-H., Hecht, M., Lee, C., Li, C., Grube, V., & Cisse, I. I. (2018) · Science · doi:10.1126/science.aar4199 · Cited by 1,403
The Bacterial Cytoplasm Has Glass-like Properties and Is Fluidized by Metabolic Activity
Parry, B. R., Surovtsev, I. V., Cabeen, M. T., O’Hern, C. S., Dufresne, E. R., & Jacobs-Wagner, C. (2014) · Cell · doi:10.1016/j.cell.2013.11.028 · Cited by 822
Chechkin, A. V., Seno, F., Metzler, R., & Sokolov, I. M. (2017) · Physical Review X · doi:10.1103/physrevx.7.021002 · Cited by 432
Transcription-coupled changes in nuclear mobility of mammalian cis-regulatory elements
Gu, B., Swigut, T., Spencley, A., Bauer, M. R., Chung, M., Meyer, T., & Wysocka, J. (2018) · Science · doi:10.1126/science.aao3136 · Cited by 363
Metadata
- Authors
- Weber, S. C., Spakowitz, A. J., & Theriot, J. A.
- Venue
- Physical Review Letters
- Publisher
- American Physical Society (APS)
- Published
- 2010-06-08
- Volume
- 104
- Issue
- 23
- Pages
- 238102-238102
- ISSN
- 0031-9007 (ISSN-L)
- 1079-7114
- OpenAlex
- W2058946062
- Cited by
- 633
- References
- 1
- FWCI
- 40.81
- Type
- journal article
- Language
- en
- Open access
- green
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- Weber, S. C., Spakowitz, A. J., & Theriot, J. A. (2010). Bacterial Chromosomal Loci Move Subdiffusively through a Viscoelastic Cytoplasm. Physical Review Letters. https://doi.org/10.1103/physrevlett.104.238102
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Contains information from the Semantic Scholar Academic Graph Datasets, made available under the ODC Attribution License (ODC-BY 1.0).
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