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Related Concept Videos

Inhalation Anthrax01:25

Inhalation Anthrax

Anthrax is a zoonotic disease caused by Bacillus anthracis, a Gram-positive, spore-forming bacterium. It primarily affects herbivorous animals but can be transmitted to humans through skin contact, ingestion, or inhalation of spores.Cutaneous anthrax, the most common form, typically results from direct contact with bacterial spores through skin abrasions and is generally less severe. Gastrointestinal anthrax results from eating undercooked or contaminated meat. It affects the mouth, throat, or...
Endospores and Sporulation01:20

Endospores and Sporulation

Endospores are specialized, dormant cells primarily formed by Gram-positive bacteria, including Bacillus and Clostridium, enabling survival under extreme environmental conditions. Due to their unique composition and formation process, these structures are highly resistant to physical and chemical insults, such as extreme heat, ultraviolet and ionizing radiation, desiccation, and toxic chemicals. Rare instances of endospore-like structures have also been observed in some Gram-negative bacteria,...
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Bacterial Phylum Actinobacteria

Coryneform bacteria are gram-positive, aerobic, nonmotile rods that exhibit irregular, club-shaped, or V-shaped arrangements. Their V-shape results from snapping division, where the inner cell wall layer forms the cross-wall, while the outer layer remains intact until it ruptures on one side, causing the daughter cells to bend away.The primary genera are Corynebacterium and Arthrobacter. Corynebacterium includes diverse species, ranging from saprophytes to pathogens like Corynebacterium...
Production of Biopesticides01:18

Production of Biopesticides

Biopesticides offer a sustainable alternative to chemical pesticides, utilizing microbial agents to control agricultural pests. Bacillus thuringiensis (Bt) is a widely employed bacterium known for its potent insecticidal activity. Bt biopesticides are favored for their specificity to insect pests, minimal environmental impact, and natural degradability.Mechanism of Bt Toxin Action Bt produces insecticidal crystal (Cry) proteins during its sporulation phase. These proteins form parasporal...
Receptor-mediated Endocytosis01:20

Receptor-mediated Endocytosis

Receptor-mediated endocytosis is when bulk amounts of specific molecules are imported into a cell after binding to cell surface receptors. The molecules bound to these receptors are taken into the cell through inward folding of the cell surface membrane, which is eventually pinched off into a vesicle within the cell. Structural proteins, such as clathrin, coat the budding vesicle.
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Related Experiment Video

Updated: Jun 21, 2026

Recombinant Protein Expression, Crystallization, and Biophysical Studies of a Bacillus-conserved Nucleotide Pyrophosphorylase, BcMazG
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Recombinant Protein Expression, Crystallization, and Biophysical Studies of a Bacillus-conserved Nucleotide Pyrophosphorylase, BcMazG

Published on: May 16, 2017

The Bacillus anthracis spore.

Adam Driks1

  • 1Department of Microbiology and Immunology, Loyola University Medical Center, 2160 South First Avenue, Maywood, IL 60153, USA. adriks@lumc.edu

Molecular Aspects of Medicine
|August 18, 2009
PubMed
Summary
This summary is machine-generated.

Bacillus anthracis forms dormant, infectious spores to survive starvation and cause anthrax. Molecular analysis reveals unique spore shell structures crucial for survival and disease, offering biodefense insights.

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Opsono-Adherence Assay to Evaluate Functional Antibodies in Vaccine Development Against Bacillus anthracis and Other Encapsulated Pathogens
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Last Updated: Jun 21, 2026

Recombinant Protein Expression, Crystallization, and Biophysical Studies of a Bacillus-conserved Nucleotide Pyrophosphorylase, BcMazG
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Recombinant Protein Expression, Crystallization, and Biophysical Studies of a Bacillus-conserved Nucleotide Pyrophosphorylase, BcMazG

Published on: May 16, 2017

Opsono-Adherence Assay to Evaluate Functional Antibodies in Vaccine Development Against Bacillus anthracis and Other Encapsulated Pathogens
13:47

Opsono-Adherence Assay to Evaluate Functional Antibodies in Vaccine Development Against Bacillus anthracis and Other Encapsulated Pathogens

Published on: May 19, 2020

Area of Science:

  • Microbiology
  • Bacterial Pathogenesis
  • Structural Biology

Background:

  • Bacillus anthracis forms specialized spores for survival and infection.
  • Spores are dormant, stress-resistant, and infectious particles of anthrax.
  • Spore anatomy is unique, featuring concentric shells with distinct functions.

Purpose of the Study:

  • To detail the molecular anatomy of Bacillus anthracis spores.
  • To understand the function of each spore shell layer.
  • To identify potential targets for biodefense applications.

Main Methods:

  • Molecular analysis of spore shell structures.
  • Investigation of spore dormancy and germination mechanisms.
  • Examination of spore-host interactions.

Main Results:

  • Bacillus anthracis spores possess a unique multi-layered shell structure.
  • Each shell layer contributes to spore dormancy, resistance, and infectivity.
  • The outermost layer mediates surface interactions crucial for pathogenesis.

Conclusions:

  • Detailed understanding of spore structure-function relationships is key.
  • Targeting spore layers may lead to novel therapeutics and decontamination methods.
  • Further research on the outermost spore layer is critical for biodefense advancement.