Natural and Synthetic Halogenated Amino Acids-Structural and Bioactive Features in Antimicrobial Peptides and Peptidomimetics

The 3D structure and surface characteristics of proteins and peptides are crucial for interactions with receptors or ligands and can be modified to some extent to modulate their biological roles and pharmacological activities. The introduction of halogen atoms on the side-chains of amino acids is a...

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Veröffentlicht in:Molecules (Basel, Switzerland) Switzerland), 2021-12, Vol.26 (23), p.7401
Hauptverfasser: Mardirossian, Mario, Rubini, Marina, Adamo, Mauro F A, Scocchi, Marco, Saviano, Michele, Tossi, Alessandro, Gennaro, Renato, Caporale, Andrea
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container_title Molecules (Basel, Switzerland)
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creator Mardirossian, Mario
Rubini, Marina
Adamo, Mauro F A
Scocchi, Marco
Saviano, Michele
Tossi, Alessandro
Gennaro, Renato
Caporale, Andrea
description The 3D structure and surface characteristics of proteins and peptides are crucial for interactions with receptors or ligands and can be modified to some extent to modulate their biological roles and pharmacological activities. The introduction of halogen atoms on the side-chains of amino acids is a powerful tool for effecting this type of tuning, influencing both the physico-chemical and structural properties of the modified polypeptides, helping to first dissect and then rationally modify features that affect their mode of action. This review provides examples of the influence of different types of halogenation in amino acids that replace native residues in proteins and peptides. Examples of synthetic strategies for obtaining halogenated amino acids are also provided, focusing on some representative compounds and their biological effects. The role of halogenation in native and designed antimicrobial peptides (AMPs) and their mimetics is then discussed. These are in the spotlight for the development of new antimicrobial drugs to counter the rise of antibiotic-resistant pathogens. AMPs represent an interesting model to study the role that natural halogenation has on their mode of action and also to understand how artificially halogenated residues can be used to rationally modify and optimize AMPs for pharmaceutical purposes.
doi_str_mv 10.3390/molecules26237401
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subjects Amino acids
Anti-Bacterial Agents - chemistry
Anti-Bacterial Agents - pharmacology
Antibiotic resistance
Antibiotics
Antiinfectives and antibacterials
Antimicrobial agents
Antimicrobial peptides
antimicrobial peptides (AMPs)
Antimicrobial Peptides - chemistry
Biological effects
bromo-tryptophan
Carbon
Drug development
Enzymes
Fluorine
fluoro amino acids
fluoro-proline
Gram-Negative Bacteria - drug effects
Gram-Positive Bacteria - drug effects
Halogenation
Halogens - chemistry
Humans
Microbial Sensitivity Tests
Mode of action
Peptides
Peptidomimetics
Peptidomimetics - chemistry
Peptidomimetics - metabolism
Peptoids - chemistry
Polypeptides
Proline - analogs & derivatives
Proline - chemistry
Protein folding
Proteins
Residues
Review
Signal transduction
Structure-Activity Relationship
Surface properties
title Natural and Synthetic Halogenated Amino Acids-Structural and Bioactive Features in Antimicrobial Peptides and Peptidomimetics
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