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Related Concept Videos

Antimicrobial Proteins01:23

Antimicrobial Proteins

Antimicrobial proteins are important components of the immune system. They aid the body in combating pathogens by either killing them directly or hindering their replication processes. Four main types of antimicrobial substances are interferons, the complement system, iron-binding proteins, and antimicrobial proteins.
Interferons
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Methicillin-resistant Staphylococcus aureus (MRSA) presents a critical public health threat, arising from its capacity to resist β-lactam antibiotics due to acquisition of the mecA gene within the staphylococcal cassette chromosome mec (SCCmec). This gene encodes penicillin-binding protein 2a (PBP2a), which impairs binding efficacy of methicillin and other β-lactams. MRSA has evolved into distinct clonal lineages impacting humans and animals alike, reinforcing its significance within the One...
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Quorum sensing is a mechanism of bacterial communication that enables coordinated gene expression in response to changes in population density. This facilitates collective behaviors that enhance survival, resource acquisition, and ecological adaptation. This process relies on small signaling molecules called autoinducers that accumulate as bacterial populations grow. When a critical threshold concentration of autoinducers is reached, bacterial cells collectively modify gene expression,...
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Biological Methods for Microbial Control

Biological agents offer an effective means of controlling microbial growth by leveraging natural processes like predation, competition, and the secretion of antimicrobial substances.Predatory bacteria such as Bdellovibrio species target and kill pathogens like Salmonella and E. coli. They are widely used in poultry farms to control infections. Myxococcus species help combat plant-pathogenic fungi. These naturally occurring predators serve as eco-friendly alternatives to chemical pesticides and...
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Related Experiment Video

Updated: May 7, 2026

Production and Visualization of Bacterial Spheroplasts and Protoplasts to Characterize Antimicrobial Peptide Localization
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Production and Visualization of Bacterial Spheroplasts and Protoplasts to Characterize Antimicrobial Peptide Localization

Published on: August 11, 2018

Antimicrobial peptides from marine proteobacteria.

Florie Desriac1, Camille Jégou, Eric Balnois

  • 1University of Brest, LUBEM EA 3882, SFR 148, Quimper 29000, France. florie.desriac@univ-brest.fr.

Marine Drugs
|October 3, 2013
PubMed
Summary

Marine bacteria, particularly Proteobacteria, are a promising source of novel antimicrobial compounds like non-ribosomal peptides (NRPs). This review compiles data on these important drug candidates to combat multidrug-resistant bacteria.

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Antimicrobial Peptides Produced by Selective Pressure Incorporation of Non-canonical Amino Acids
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Antimicrobial Peptides Produced by Selective Pressure Incorporation of Non-canonical Amino Acids

Published on: May 4, 2018

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Last Updated: May 7, 2026

Production and Visualization of Bacterial Spheroplasts and Protoplasts to Characterize Antimicrobial Peptide Localization
10:13

Production and Visualization of Bacterial Spheroplasts and Protoplasts to Characterize Antimicrobial Peptide Localization

Published on: August 11, 2018

Antimicrobial Peptides Produced by Selective Pressure Incorporation of Non-canonical Amino Acids
11:56

Antimicrobial Peptides Produced by Selective Pressure Incorporation of Non-canonical Amino Acids

Published on: May 4, 2018

Area of Science:

  • Microbiology
  • Marine Biotechnology
  • Drug Discovery

Background:

  • Declining efficacy of traditional antibiotics due to multidrug-resistant (MDR) strains necessitates new therapeutic agents.
  • Marine bacteria, excluding Actinomycetes and Cyanobacteria, remain an underexplored reservoir for novel bioactive metabolites.
  • Marine Proteobacteria have yielded several antimicrobial compounds, with polyketides (PKs) and non-ribosomal peptides (NRPs) showing significant promise.

Purpose of the Study:

  • To review and compile existing data on antimicrobial peptides.
  • To highlight the potential of marine Proteobacteria as a source of these compounds.
  • To focus on non-ribosomal peptides (NRPs) due to their unique structures and antimicrobial properties.

Main Methods:

  • Literature review and data compilation.
  • Analysis of structures and bioactivities of antimicrobial compounds.
  • Focus on compounds isolated from marine Proteobacteria.

Main Results:

  • Identification of various antimicrobial compounds from marine Proteobacteria.
  • Emphasis on polyketides (PKs) and non-ribosomal peptides (NRPs) as key classes.
  • NRPs are highlighted as naturally modified peptides with significant antimicrobial potential.

Conclusions:

  • Marine Proteobacteria represent a valuable, yet underexplored, resource for discovering novel antibiotics.
  • Non-ribosomal peptides (NRPs) from these bacteria are critical for developing new strategies against MDR infections.
  • Further research into marine bacterial metabolites is crucial for addressing the global antibiotic resistance crisis.