Long-term positioning and polar preference of chemoreceptor clusters in E. coli

Moriah Koler, Eliran Peretz, Chetan Aditya, Thomas S. Shimizu and Ady Vaknin ()
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Moriah Koler: The Hebrew University
Eliran Peretz: The Hebrew University
Chetan Aditya: AMOLF Institute
Thomas S. Shimizu: AMOLF Institute
Ady Vaknin: The Hebrew University

Nature Communications, 2018, vol. 9, issue 1, 1-10

Abstract: Abstract The bacterial chemosensory arrays are a notable model for studying the basic principles of receptor clustering and cellular organization. Here, we provide a new perspective regarding the long-term dynamics of these clusters in growing E. coli cells. We demonstrate that pre-existing lateral clusters tend to avoid translocation to pole regions and, therefore, continually shuttle between the cell poles for many generations while being static relative to the local cell-wall matrix. We also show that the polar preference of clusters results fundamentally from reduced clustering efficiency in the lateral region, rather than a developmental-like progression of clusters. Furthermore, polar preference is surprisingly robust to structural alterations designed to probe preference due to curvature sorting, perturbing the cell envelope physiology affects the cluster-size distribution, and the size-dependent mobility of receptor complexes differs between polar and lateral regions. Thus, distinct envelope physiology in the polar and lateral cell regions may contribute to polar preference.

Date: 2018
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DOI: 10.1038/s41467-018-06835-5

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