A MatP-divisome Interaction Coordinates Chromosome Segregation with Cell Division in E. Coli

Overview

Journal EMBO J

Specialties Biotechnology
Molecular Biology

Date 2012 May 15

PMID 22580828

Citations 108

Authors

Olivier Espeli

Romain Borne

Pauline Dupaigne

Axel Thiel

Emmanuelle Gigant

Romain Mercier

Frederic Boccard

Affiliations

Soon will be listed here.

Abstract

Initiation of chromosome segregation in bacteria is achieved by proteins acting near the origin of replication. Here, we report that the precise choreography of the terminus region of the Escherichia coli chromosome is also tightly controlled. The segregation of the terminus (Ter) macrodomain (MD) involves the structuring factor MatP. We characterized that migration of the Ter MD from the new pole to mid-cell and its subsequent persistent localization at mid-cell relies on several processes. First, the replication of the Ter DNA is concomitant with its recruitment from the new pole to mid-cell in a sequential order correlated with the position on the genetic map. Second, using a strain carrying a linear chromosome with the Ter MD split in two parts, we show that replisomes are repositioned at mid-cell when replication of the Ter occurs. Third, we demonstrate that anchoring the Ter MD at mid-cell depends on the specific interaction of MatP with the division apparatus-associated protein ZapB. Our results reveal how segregation of the Ter MD is integrated in the cell-cycle control.

Citing Articles

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