{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,7,22]],"date-time":"2026-07-22T18:24:22Z","timestamp":1784744662679,"version":"3.55.0"},"reference-count":74,"publisher":"Public Library of Science (PLoS)","issue":"7","license":[{"start":{"date-parts":[[2026,7,22]],"date-time":"2026-07-22T00:00:00Z","timestamp":1784678400000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"DOI":"10.13039\/501100001843","name":"Anusandhan National Research Foundation","doi-asserted-by":"crossref","award":["ANRF\/ECRG\/2024\/003501\/LS"],"award-info":[{"award-number":["ANRF\/ECRG\/2024\/003501\/LS"]}],"id":[{"id":"10.13039\/501100001843","id-type":"DOI","asserted-by":"crossref"}]}],"content-domain":{"domain":["www.plosone.org"],"crossmark-restriction":false},"short-container-title":["PLoS One"],"abstract":"<jats:p>\n                    The global health crisis of antimicrobial resistance necessitates the discovery of new antibacterial agents. Underexplored marine microbiomes, particularly from the biodiverse Indian coast, represent a rich potential source of antimicrobial peptides (AMPs). Targeting the urgent threat of multidrug-resistant ESKAPE pathogens, the present study aimed to computationally identify novel, membrane-active AMPs from these unique metagenomic datasets, with a focus on inhibiting Gram-negative bacteria. In this study, we computationally mined Indian marine high-resolution shotgun metagenomic datasets through quality filtering, de novo assembly, and small open reading frame prediction. An ensemble of six machine learning-based AMP prediction tools identified over 51,000 high-confidence candidate AMPs. Subsequent filtering based on physicochemical properties and AlphaFold3-predicted structures prioritized ten peptides with favourable membrane-active characteristics. Two lead candidates, c_AMP_1 and c_AMP_2, were subjected to all-atom molecular dynamics simulations within Gram-negative membrane mimetic models of\n                    <jats:italic>Pseudomonas aeruginosa<\/jats:italic>\n                    ,\n                    <jats:italic>Acinetobacter baumannii<\/jats:italic>\n                    , and\n                    <jats:italic>Klebsiella pneumoniae<\/jats:italic>\n                    . Our simulations indicated distinct membrane interaction modes: c_AMP_1 adopted a stable, surface-associated \u03b1-helical orientation, while c_AMP_2 displayed a more flexible, membrane-inserting orientation in the simulations. Analysis of the MD simulations revealed distinct predicted peptide-membrane interaction profiles, characterized by specific hydrogen bonding patterns, peptide tilt angles, and membrane thinning, which collectively suggest differing biophysical interaction modes. Taken together, our work suggests the Indian marine microbiome as a promising reservoir for novel AMP candidates and suggests that an integrated computational pipeline \u2013 combining machine learning, structural biology, and biophysical simulation \u2013 may help prioritize candidate peptides for future experimental validation against critical pathogens.\n                  <\/jats:p>","DOI":"10.1371\/journal.pone.0353985","type":"journal-article","created":{"date-parts":[[2026,7,22]],"date-time":"2026-07-22T17:31:10Z","timestamp":1784741470000},"page":"e0353985","update-policy":"https:\/\/doi.org\/10.1371\/journal.pone.corrections_policy","source":"Crossref","is-referenced-by-count":0,"title":["In silico identification and biophysical characterization of candidate antimicrobial peptides from the Indian marine microbiome targeting multidrug-resistant ESKAPE pathogens"],"prefix":"10.1371","volume":"21","author":[{"given":"Sreelakshmi","family":"K. V","sequence":"first","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Nasri","family":"Thaha","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-9726-8454","authenticated-orcid":true,"given":"Budheswar","family":"Dehury","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"340","published-online":{"date-parts":[[2026,7,22]]},"reference":[{"issue":"4","key":"pone.0353985.ref001","doi-asserted-by":"crossref","first-page":"1050","DOI":"10.3390\/microorganisms11041050","article-title":"Antimicrobial Resistance in the Global Health Network: Known Unknowns and Challenges for Efficient Responses in the 21st Century","volume":"11","author":"TM 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