{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,10,20]],"date-time":"2026-10-20T14:55:39Z","timestamp":1792508139651,"version":"4.5.0"},"reference-count":61,"publisher":"Wiley","issue":"1","license":[{"start":{"date-parts":[[2023,5,18]],"date-time":"2023-05-18T00:00:00Z","timestamp":1684368000000},"content-version":"vor","delay-in-days":137,"URL":"http:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"content-domain":{"domain":["onlinelibrary.wiley.com"],"crossmark-restriction":true},"short-container-title":["BioMed Research International"],"published-print":{"date-parts":[[2023,1]]},"abstract":"<jats:p>Methicillin\u2010resistant <jats:italic>Staphylococcus aureus<\/jats:italic> (MRSA) has evolved resistance even against the last resort <jats:italic>\u03b2<\/jats:italic>\u2010lactam antibiotics. This is because of the acquisition of an additional penicillin\u2010binding protein 2a (PBP2a) which is a resistance determinant in MRSA. Currently, available PBP2a inhibitors are ineffective against life\u2010threatening and fatal infections caused by microorganisms. Therefore, there is an urgent need to screen natural compounds that could overpass the resistance issue alone or in combination with antibacterial drugs. We studied the interactions of different phytochemicals with PBP2a so that crosslinking of peptidoglycans could be inhibited. In structure\u2010based drug designing, <jats:italic>in silico<\/jats:italic> approach plays a key role in determining phytochemical interactions with PBP2a. In this study, a total of 284 antimicrobial phytochemicals were screened using the molecular docking approach. The binding affinity of methicillin, \u201011.241\u2009kcal\/mol, was used as the threshold value. The phytochemicals having binding affinities with PBP2a stronger than methicillin were identified, and the drug\u2010likeness properties and toxicities of the screened phytochemicals were calculated. Out of the multiple phytochemicals screened, nine were found as good inhibitors to be PBP2a, among which cyanidin, tetrandrine, cyclomorusin, lipomycin, and morusin showed strong binding potential with the receptor protein. These best\u2010selected phytochemicals were also docked to the allosteric site of PBP2a, and most of the compounds revealed strong interactions with the allosteric site. These compounds were safe to be used as drugs because they did not show any toxicity and had good bioactivity scores. Cyanidin had the highest binding affinity (S\u2010score of \u201016.061\u2009kcal\/mol) with PBP2a and with high gastrointestinal (GI) absorption. Our findings suggest that cyanidin can be used as a drug against MRSA infection either in purified form or that its structure can lead to the development of more potent anti\u2010MRSA medicines. However, experimental studies are required to evaluate the inhibitory potential of these phytochemicals against MRSA.<\/jats:p>","DOI":"10.1155\/2023\/5100400","type":"journal-article","created":{"date-parts":[[2023,5,19]],"date-time":"2023-05-19T00:50:08Z","timestamp":1684457408000},"update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":19,"title":["<i>In Silico<\/i> Method for the Screening of Phytochemicals against Methicillin\u2010Resistant <i>Staphylococcus 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