Experimental and simulation studies reveal mechanism of action of human defensin derivatives

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dc.contributor.author Rani, Lata
dc.contributor.author Arora, Ankita
dc.contributor.author Majhi, Sasmita
dc.contributor.author Mishra, Abhijit
dc.contributor.author Mallajosyula, Sairam S.
dc.coverage.spatial United States of America
dc.date.accessioned 2021-12-24T11:50:53Z
dc.date.available 2021-12-24T11:50:53Z
dc.date.issued 2022-02
dc.identifier.citation Rani, Lata; Arora, Ankita; Majhi, Sasmita; Mishra, Abhijit and Mallajosyula, Sairam S., "Experimental and simulation studies reveal mechanism of action of human defensin derivatives", Biochimica et Biophysica Acta (BBA) - Biomembranes, DOI: 10.1016/j.bbamem.2021.183824, vol. 1864, no. 2, Feb. 2022 en_US
dc.identifier.issn 0005-2736
dc.identifier.uri https://doi.org/10.1016/j.bbamem.2021.183824
dc.identifier.uri https://repository.iitgn.ac.in/handle/123456789/7338
dc.description.abstract Antimicrobial peptides (AMPs) are naturally occurring promising candidates which can be used as antibiotics against a wide variety of bacteria. The key component for using them as a potent antibiotic is that their mechanism of action is less prone to bacterial resistance. However, the molecular details of their mechanism of action is not yet fully understood. In this study, we try to shed light on the mode of action of AMPs, possible reason behind it, and their interaction with lipid bilayers through experimental as well as molecular dynamics (MD) simulation studies. The focal of our study was Human beta defensin 3 (hBD-3) which is a naturally occurring AMP. We chose three derivatives of hBD-3, namely CHRG01, KSR, and KLR for the detailed analysis presented in this study. These three peptides are evaluated for their antibacterial potency, secondary structure analysis and mechanism of action. The experimental results reveal that these peptides are active against gram positive as well as gram negative bacteria and kill bacteria by forming membrane pores. The MD simulation results correlate well with the antibacterial activity and shed light into the early membrane insertion dynamics. Moreover, the specific amino acids responsible for membrane disruptions are also identified from the MD simulations. Understanding the molecular level interaction of individual amino acids with the lipid bilayer will greatly help in the design of more efficient antimicrobial peptides.
dc.description.statementofresponsibility by Lata Rani, Ankita Arora, Sasmita Majhi, Abhijit Mishra and Sairam S. Mallajosyula
dc.format.extent vol. 1864, no. 2
dc.language.iso en_US en_US
dc.publisher Elsevier en_US
dc.subject Molecular dynamics en_US
dc.subject Cell-penetrating peptides en_US
dc.subject Antimicrobial peptides en_US
dc.subject Antibacterial assay en_US
dc.title Experimental and simulation studies reveal mechanism of action of human defensin derivatives en_US
dc.type Article en_US
dc.relation.journal Biochimica et Biophysica Acta (BBA) - Biomembranes

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