KEY PUBLICATIONS

Alternative modes of client binding enable functional plasticity of Hsp70
Alireza Mashaghi et al. | Nature 539, 448-451 (2016) | pdf & DOI: 10.1038/nature20137
Stochasticity of metabolism and growth at the single-cell level
Daniel J. Kiviet et al. | Nature 514, 376-379 (2014) | pdf & DOI: 10.1038/nature13582
Reshaping of the conformational search of a protein by the chaperone trigger factor
Alireza Mashaghi et al. | Nature 500, 98-101 (2013) | pdf & DOI: 10.1038/nature12293
Tradeoffs and optimality in the evolution of gene regulation
Frank J. Poelwijk et al. | Cell 146, 462-470 (2011) | pdf & DOI:10.1016/j.cell.2011.06.035
Direct Observation of Chaperone-Induced Changes in a Protein Folding Pathway
Philipp Bechtluft, Ruud van Leeuwen et al. | Science 318:1458-1461 (2007) | pdf & DOI:10.1126/science.1144972
Empirical fitness landscapes reveal accessible evolutionary paths
Frank Poelwijk, Daan Kiviet et al. | Nature 445:383-386 (2007) | pdf & DOI:10.1038/nature05451
The bacteriophage phi29 portal motor can package DNA against a large internal force
Douglas E. Smith, Sander J. Tans et al. | Nature 413:748-52 (2001) | pdf & DOI:10.1038/35099581
Molecular transistors: Potential modulations along carbon nanotubes
Sander J. Tans, Cees Dekker. | Nature 404:834-35 (2000) | pdf & DOI:10.1038/35009026
Imaging electron wave functions of quantized energy levels in carbon nanotubes
Liesbeth C. Venema et al. | Science 283:52-55 (1999) | pdf & DOI:10.1126/science.283.5398.52
Electron-electron correlations in carbon nanotubes
Sander J. Tans et al. | Nature 394:761-64 (1998) | pdf & DOI:10.1038/29494
Room-temperature transistor based on a single carbon nanotube
Sander J. Tans, Alwin R. M. Verschueren & Cees Dekker | Nature 393:49-52 (1998) | pdf & DOI:10.1038/29954
Individual single-wall carbon nanotubes as quantum wires
Sander J. Tans et al. | Nature 386:474-77 (1997) | pdf & DOI:10.1038/386474a0
Fullerene 'crop circles'
Jie Liu et al. | Nature 385, 780-781 (1997) | pdf & DOI:10.1038/385780b0

Size Laws and Division Ring Dynamics in Filamentous Escherichia coli cells

Wehrens, M.; Ershov, D.; Rozendaal, R.; Walker, N.; Schultz, D.; Kishony, R.; Levin, P. A.; Tans, S. J.
Abstract:
Our understanding of bacterial cell size control is based mainly on stress-free growth conditions in the laboratory [1-10]. In the real world, however, bacteria are routinely faced with stresses that produce long filamentous cell morphologies [11-28]. Escherichia coli is observed to filament in response to DNA damage [22-25], antibiotic treatment [11-14, 28], host immune systems [15, 16], temperature [17], starvation [20], and more [18, 19, 21], conditions which are relevant to clinical settings and food preservation [26]. This shape plasticity is considered a survival strategy [27]. Size control in this regime remains largely unexplored. Here we report that E. coli cells use a dynamic size ruler to determine division locations combined with an adder-like mechanism to trigger divisions. As filamentous cells increase in size due to growth, or decrease in size due to divisions, its multiple Fts division rings abruptly reorganize to remain one characteristic cell length away from the cell pole and two such length units away from each other. These rules can be explained by spatiotemporal oscillations of Min proteins. Upon removal of filamentation stress, the cells undergo a sequence of division events, randomly at one of the possible division sites, on average after the time required to grow one characteristic cell size. These results indicate that E. coli cells continuously keep track of absolute length to control size, suggest a wider relevance for the adder principle beyond the control of normally sized cells, and provide a new perspective on the function of the Fts and Min systems.
Year:
2018
Type of Publication:
Article
Journal:
Curr. Biol.
Volume:
28
Number:
6
Pages:
972-979
Month:
March
Note:
[DOI:\href{https://dx.doi.org/10.1016/j.cub.2018.02.006}{10.1016/j.cub.2018.02.006}] [PubMed:\href{https://www.ncbi.nlm.nih.gov/pubmed/29502951}{29502951}]
Hits: 270