Pediocin-like bacteriocins: new perspectives on mechanism of action and immunity

This review attempts to analyze the mechanism of action and immunity of class IIa bacteriocins. These peptides are promising alternative food preservatives and they have a great potential application in medical sciences. Class IIa bacteriocins act on the cytoplasmic membrane of Gram-positive cells d...

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Published in:Current genetics 2018-04, Vol.64 (2), p.345-351
Main Authors: Ríos Colombo, Natalia S., Chalón, Miriam C., Navarro, Silvia A., Bellomio, Augusto
Format: Article
Language:English
Subjects:
Antimicrobial peptides
Bacteriocins
Binding
Biochemistry
Biomedical and Life Sciences
Cell Biology
Forming
Immunity
Life Sciences
Mannose
Membrane composition
Membrane proteins
Membranes
Microbial Genetics and Genomics
Microbiology
Pediocin
Peptides
Phosphotransferase
Plant Sciences
Preservatives
Proteomics
Review
Toxicity
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container_end_page 351
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container_title Current genetics
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creator Ríos Colombo, Natalia S.
Chalón, Miriam C.
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description This review attempts to analyze the mechanism of action and immunity of class IIa bacteriocins. These peptides are promising alternative food preservatives and they have a great potential application in medical sciences. Class IIa bacteriocins act on the cytoplasmic membrane of Gram-positive cells dissipating the transmembrane electrical potential by forming pores. However, their toxicity and immunity mechanism remains elusive. Here we discuss the role of the mannose phosphotransferase system (man-PTS) as the receptor for class IIa bacteriocins and the influence of the membrane composition on the activity of these antimicrobial peptides. A model that is consistent with experimental results obtained by different researchers involves the non-specific binding of the bacteriocin to the negatively charged membrane of target bacteria. This step would facilitate a specific binding to the receptor protein, altering its functionality and forming an independent pore in which the bacteriocin is inserted in the membrane. An immunity protein could specifically recognize and block the pore. Bacteriocins function in bacterial ecosystems and energetic costs associated with their production are also discussed. Theoretical models based on solid experimental evidence are vital to understand bacteriocins mechanism of action and to promote new technological developments.
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subjects Antimicrobial peptides
Bacteriocins
Binding
Biochemistry
Biomedical and Life Sciences
Cell Biology
Forming
Immunity
Life Sciences
Mannose
Membrane composition
Membrane proteins
Membranes
Microbial Genetics and Genomics
Microbiology
Pediocin
Peptides
Phosphotransferase
Plant Sciences
Preservatives
Proteomics
Review
Toxicity
title Pediocin-like bacteriocins: new perspectives on mechanism of action and immunity
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