Unite to divide: Oligomerization of tubulin and actin homologs regulates initiation of bacterial cell division

  • Krupka M
  • Margolin W
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Abstract

To generate two cells from one, bacteria such as Escherichia coli use a complex of membrane-embedded proteins called the divisome that synthesize the division septum. The initial stage of cytokinesis requires a tubulin homolog, FtsZ, which forms polymers that treadmill around the cell circumference. The attachment of these polymers to the cytoplasmic membrane requires an actin homolog, FtsA, which also forms dynamic polymers that directly bind to FtsZ. Recent evidence indicates that FtsA and FtsZ regulate each other’s oligomeric state in E. coli to control the progression of cytokinesis, including the recruitment of septum synthesis proteins. In this review, we focus on recent advances in our understanding of protein-protein association between FtsZ and FtsA in the initial stages of divisome function, mainly in the well-characterized E. coli system.

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Krupka, M., & Margolin, W. (2018). Unite to divide: Oligomerization of tubulin and actin homologs regulates initiation of bacterial cell division. F1000Research, 7, 235. https://doi.org/10.12688/f1000research.13504.1

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