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The plant cell wall gives plant cells shape, support, and protection. As a cell matures, its cell wall specializes according to the cell type. For example, the parenchyma cells of leaves possess only a thin, primary cell wall.
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Plant cells have a cell wall, a rigid outer covering that protects the cell and provides shape and support. During cell division, a mixture of enzymes, proteins, and glucose molecules is transported via vesicles to the center of the cell. These vesicles continuously fuse and build a cell plate between the dividing cells. As the cell plate matures, new polysaccharides are added to it to form the cell walls of the daughter cells. The predominant polysaccharide in the cell wall is cellulose, made...
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The bacterial cell wall is an essential structural component that encases the plasma membrane, preserving cellular integrity, determining shape, and protecting against osmotic stress. This rigid yet flexible structure primarily comprises peptidoglycan, a polymer that forms a mesh-like matrix conferring mechanical strength and flexibility.Peptidoglycan Composition and StructurePeptidoglycan, the core of the bacterial cell wall, comprises alternating units of N-acetylglucosamine (NAG) and...
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Archaeal cell walls are structurally and compositionally distinct from their bacterial counterparts, lacking the characteristic peptidoglycan layer found in most bacteria. Instead, archaeal cell walls exhibit remarkable diversity, utilizing materials such as pseudomurein, polysaccharides, and proteins to construct their protective outer layers. This structural flexibility is closely tied to archaea's ecological adaptability.S-Layers: The Common Archaeal Cell WallThe S-layer is the most...
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Structure of PeptidoglycanPeptidoglycan is a vital structural component of the bacterial cell wall, providing mechanical strength and shape to the cell. It consists of repeating units of two sugars—N-acetylglucosamine (NAG) and N-acetylmuramic acid (NAM)—linked by β-1,4 glycosidic bonds. These sugar chains are cross-linked by short peptide chains, forming a mesh-like polymer that surrounds the bacterial plasma membrane.Cytoplasmic Phase – Precursor SynthesisPeptidoglycan...
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Updated: Feb 27, 2026

Stress-induced Antibiotic Susceptibility Testing on a Chip
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Targeting a cell wall biosynthesis hot spot.

Anna Müller1, Anna Klöckner, Tanja Schneider

  • 1Institute of Pharmaceutical Microbiology, University of Bonn, Bonn, Germany. tschneider@uni-bonn.de.

Natural Product Reports
|July 5, 2017
PubMed
Summary

Bacterial cell wall synthesis is a key antibiotic target. Targeting lipid II, a crucial precursor, offers a potent antibacterial strategy by disrupting cell membranes and essential enzymes.

Area of Science:

  • Bacteriology
  • Medicinal Chemistry
  • Molecular Biology

Background:

  • The bacterial cell wall biosynthetic network is a proven target for antibiotics.
  • Interfering with membrane-bound substrates like lipid II is an effective antibacterial strategy.
  • Lipid II is a conserved, accessible precursor in peptidoglycan synthesis.

Purpose of the Study:

  • To review the role of lipid II as an antibiotic target.
  • To explore the mechanisms of lipid II-binding antibiotics.
  • To discuss the diversity of natural product inhibitors targeting lipid II.

Main Methods:

  • Literature review of bacterial cell wall biosynthesis.
  • Analysis of natural product inhibitors targeting lipid II.
  • Discussion of lipid II's structural conservation and accessibility.

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Main Results:

  • Lipid II is a vulnerable, non-protein target in bacterial cell wall synthesis.
  • Antibiotics targeting lipid II can disrupt membrane integrity and enzyme complexes.
  • Nature provides diverse lipid II binders across five chemical classes.

Conclusions:

  • Lipid II represents a critical target for novel antibiotic development.
  • The physicochemical properties of lipid II binders dictate their cellular effects and efficacy.
  • Targeting lipid II offers a promising avenue for combating bacterial infections.