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Related Concept Videos

Binary Fission01:26

Binary Fission

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Binary fission is the primary mode of asexual reproduction in prokaryotes, such as bacteria. It results in the production of two genetically identical daughter cells. This highly efficient process ensures the rapid propagation of bacterial populations under favorable conditions and involves coordinated cellular and molecular events.DNA Replication and SeparationThe process begins with the replication of the bacterial chromosome. The circular DNA molecule unwinds at a specific origin of...
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Molecular Factors Affecting Cell Division01:27

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Several external and internal factors influence the initiation and inhibition of cell division. For instance, the death of nearby cells or the release of human growth hormone (hGH) promotes cell division. In contrast, lack of hGH or crowding of cells can inhibit cell division.
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Bacterial cells were initially considered simple, randomly organized structures lacking a cytoskeleton. However, the discovery of cytoskeleton homologs in bacteria led to the change of this opinion. Bacterial cytoskeletal filaments regulate the cell shape, cell polarity, cell division, and partitioning of plasmids during cell division. It was later discovered that bacterial cytoskeletal proteins, mainly actin and tubulin homologs, are diverse compared to their eukaryotic counterparts. On the...
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Determining the Plane of Cell Division02:13

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Positioning the cell division plane is a critical step during development and cell differentiation, particularly during mitosis when the plane is essential for determining the size of the two daughter cells. The cell division plane is perpendicular to the plane of chromosome segregation, but different types of organisms have different cell division mechanisms to suit their morphology and function. 
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Updated: Sep 19, 2025

Live-Cell Fluorescence Microscopy to Investigate Subcellular Protein Localization and Cell Morphology Changes in Bacteria
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Staphylococcus aureus as an emerging model to study bacterial cell division.

Félix Ramos-León1, Kumaran S Ramamurthi1

  • 1Laboratory of Molecular Biology, National Cancer Institute, National Institutes of Health, Bethesda, Maryland, USA.

The Journal of Biological Chemistry
|June 8, 2025
PubMed
Summary

Staphylococcus aureus, a Gram-positive coccus, uses unique mechanisms for cell division, focusing on peptidoglycan assembly and septum placement. This research explores how these processes ensure accurate binary fission in spherical bacteria.

Keywords:
AAA+DivIVAEVE domainFacZFtsZMcrBMin systemNocPBP3PcdARodAlipoteichoic acidorthogonal cell divisionsortasewall teichoic acid

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Area of Science:

  • Microbiology
  • Cell Biology
  • Bacterial Physiology

Background:

  • Traditional bacterial cell division research primarily uses rod-shaped bacteria like Escherichia coli.
  • Diverse bacterial shapes and lifestyles necessitate broader study beyond model organisms.
  • Gram-positive cocci, like Staphylococcus aureus, present unique challenges for cell division due to lack of obvious polarity.

Purpose of the Study:

  • To investigate the cell division mechanisms in Staphylococcus aureus, a Gram-positive coccus.
  • To understand how S. aureus achieves accurate septum placement and binary fission despite its spherical shape.
  • To explore the role of the division septum in peptidoglycan modification and cell surface decoration.

Main Methods:

  • Review of recent research on Staphylococcus aureus cell division.
  • Analysis of peptidoglycan assembly and cell wall synthesis pathways.
  • Investigation of septum placement and cell elongation processes.

Main Results:

  • S. aureus employs distinct mechanisms for peptidoglycan assembly and division septum placement.
  • The division septum acts as a central hub for modifying peptidoglycan.
  • These processes are crucial for accurate binary fission and cell surface architecture in cocci.

Conclusions:

  • Studying Staphylococcus aureus provides crucial insights into bacterial cell division adaptations.
  • Understanding coccal division mechanisms expands our knowledge beyond rod-shaped models.
  • The division septum plays a multifaceted role in coccal cell biology.