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Multifaceted ABC transporters associated to microcin and bacteriocin export
Konstantinos Beis1, Sylvie Rebuffat2
1Department of Life Sciences, Imperial College London, London South Kensington, London, SW7 2AZ, United Kingdom; Rutherford Appleton Laboratory, Research Complex at Harwell, Didcot, Oxfordshire, OX11 0DE, United Kingdom.
Research in Microbiology
|August 12, 2019
Summary
Bacteria produce defense peptides like microcins and bacteriocins. ATP-binding cassette (ABC) transporters export these toxic peptides, protecting producers and targeting competitors.
Area of Science:
- Microbiology
- Molecular Biology
- Biochemistry
Background:
- Microcins and bacteriocins are defense peptides synthesized by bacteria.
- These peptides can be modified by enzymes and are toxic to competing bacteria.
- Bacteria possess immunity mechanisms, including dedicated proteins or export systems, to survive self-produced toxins.
Purpose of the Study:
- To review the characteristics of ATP-binding cassette (ABC) transporters involved in bacterial defense peptide export.
- To explore the diverse mechanisms employed by these ABC-exporters.
- To understand how these transporters provide immunity and target competitors.
Main Methods:
- Literature review of scientific publications on microcins, bacteriocins, and ABC transporters.
- Analysis of studies detailing the structure, function, and mechanisms of bacterial ABC-exporters.
- Synthesis of information regarding the specificity and additional functions of these transport systems.
Main Results:
- ABC transporters play a crucial role in exporting antimicrobial peptides out of producing bacterial cells.
- These transporters exhibit a range of specificities, from broad to highly selective.
- Some ABC-exporters possess additional functions beyond toxin export, contributing to bacterial survival and niche competition.
Conclusions:
- ABC transporters are key components of bacterial defense systems, mediating the export of microcins and bacteriocins.
- The diverse mechanisms of ABC-exporters highlight their adaptability and importance in bacterial inter-species competition.
- Further research into these transporters may reveal novel antimicrobial strategies.
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