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Related Experiment Video

Updated: Jun 12, 2026

Reconstitution of Cell-cycle Oscillations in Microemulsions of Cell-free Xenopus Egg Extracts

Reconstitution of Cell-cycle Oscillations in Microemulsions of Cell-free Xenopus Egg Extracts

Published on: September 27, 2018

Changes in the Min oscillation pattern before and after cell birth.

Jennifer R Juarez¹, William Margolin

¹Department of Microbiology and Molecular Genetics, University of Texas Medical School, Houston, TX 77030, USA.

Journal of Bacteriology

|June 15, 2010

Summary

This summary is machine-generated.

The bacterial Min system

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Area of Science:

Bacterial cell division
Cell biology
Microbiology

Background:

The Min system is crucial for bacterial cell division, ensuring proper placement of the division site.
In Escherichia coli, MinD protein oscillates between cell poles, preventing aberrant FtsZ ring formation.

Purpose of the Study:

To investigate the dynamic behavior of the MinD protein during cell division using live-cell imaging.
To understand the role of the septum and MinC in MinD localization and oscillation.

Main Methods:

Time-lapse microscopy of Escherichia coli expressing a green fluorescent protein (GFP)-MinD fusion.
Observation of GFP-MinD localization and dynamics in growing and dividing cells.

Main Results:

GFP-MinD exhibited pausing at midcell, with increased frequency as cells elongated and approached division.
MinD showed specific pausing at the developing septum, independent of MinC, and later split into daughter cells.
Minicells displayed regular MinD oscillation over short distances, highlighting geometric influences.

Conclusions:

MinD localization and oscillation are influenced by cell geometry and the developing septum.
MinD interacts with septal components independently of MinC, suggesting direct recognition of septal targets.
The observed MinD splitting mechanism ensures equitable distribution to daughter cells.