Testing Antimicrobial Properties of Selected Short Amyloids |
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Authors: | Przemysł aw Gagat,Anna Duda-Madej,Michał Ostró wka,Filip Pietluch,Alicja Seniuk,Paweł Mackiewicz,Michał Burdukiewicz |
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Affiliation: | 1.Faculty of Biotechnology, University of Wrocław, Fryderyka Joliot-Curie 14a, 50-137 Wrocław, Poland;2.Department of Microbiology, Faculty of Medicine, Wrocław Medical University, Chałubińskiego 4, 50-368 Wrocław, Poland;3.Clinical Research Centre, Medical University of Bialystok, 15-089 Białystok, Poland |
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Abstract: | Amyloids and antimicrobial peptides (AMPs) have many similarities, e.g., both kill microorganisms by destroying their membranes, form aggregates, and modulate the innate immune system. Given these similarities and the fact that the antimicrobial properties of short amyloids have not yet been investigated, we chose a group of potentially antimicrobial short amyloids to verify their impact on bacterial and eukaryotic cells. We used AmpGram, a best-performing AMP classification model, and selected ten amyloids with the highest AMP probability for our experimental research. Our results indicate that four tested amyloids: VQIVCK, VCIVYK, KCWCFT, and GGYLLG, formed aggregates under the conditions routinely used to evaluate peptide antimicrobial properties, but none of the tested amyloids exhibited antimicrobial or cytotoxic properties. Accordingly, they should be included in the negative datasets to train the next-generation AMP prediction models, based on experimentally confirmed AMP and non-AMP sequences. In the article, we also emphasize the importance of reporting non-AMPs, given that only a handful of such sequences have been officially confirmed. |
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Keywords: | antimicrobial peptides amyloids bacteria machine learning non-antimicrobial peptides prediction |
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