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Antimicrobial peptides: biochemical determinants of activity and biophysical techniques of elucidating their functionality

  • Nadin Shagaghi
  • Enzo A. Palombo
  • Andrew H. A. Clayton
  • Mrinal Bhave
Review

Abstract

Antimicrobial peptides (AMPs) have been established over millennia as powerful components of the innate immune system of many organisms. Due to their broad spectrum of activity and the development of host resistance against them being unlikely, AMPs are strong candidates for controlling drug-resistant pathogenic microbial pathogens. AMPs cause cell death through several independent or cooperative mechanisms involving membrane lysis, non-lytic activity, and/or intracellular mechanisms. Biochemical determinants such as peptide length, primary sequence, charge, secondary structure, hydrophobicity, amphipathicity and host cell membrane composition together influence the biological activities of peptides. A number of biophysical techniques have been used in recent years to study the mechanisms of action of AMPs. This work appraises the molecular parameters that determine the biocidal activity of AMPs and overviews their mechanisms of actions and the diverse biochemical, biophysical and microscopy techniques utilised to elucidate these.

Keywords

Antimicrobial peptides (AMPs) Mechanisms of action Peptide design Persistent infections 

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Copyright information

© Springer Science+Business Media B.V., part of Springer Nature 2018

Authors and Affiliations

  • Nadin Shagaghi
    • 1
  • Enzo A. Palombo
    • 1
  • Andrew H. A. Clayton
    • 1
  • Mrinal Bhave
    • 1
  1. 1.Faculty of Science, Engineering and TechnologySwinburne University of TechnologyHawthornAustralia

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