{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,5,26]],"date-time":"2026-05-26T02:03:31Z","timestamp":1779761011371,"version":"3.53.1"},"reference-count":59,"publisher":"Wiley","issue":"5","license":[{"start":{"date-parts":[[2026,4,29]],"date-time":"2026-04-29T00:00:00Z","timestamp":1777420800000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/onlinelibrary.wiley.com\/termsAndConditions#vor"},{"start":{"date-parts":[[2026,4,29]],"date-time":"2026-04-29T00:00:00Z","timestamp":1777420800000},"content-version":"tdm","delay-in-days":0,"URL":"http:\/\/doi.wiley.com\/10.1002\/tdm_license_1.1"}],"content-domain":{"domain":["analyticalsciencejournals.onlinelibrary.wiley.com"],"crossmark-restriction":true},"short-container-title":["Luminescence"],"published-print":{"date-parts":[[2026,5]]},"abstract":"<jats:title>ABSTRACT<\/jats:title>\n                  <jats:p>\n                    The binding interaction between acacetin and pepsin was explored by multispectral techniques combined with molecular docking. Fluorescence quenching revealed that acacetin quenched the intrinsic fluorescence of pepsin concentration\u2010dependently, and the reduced\n                    <jats:italic>K<\/jats:italic>\n                    <jats:sub>SV<\/jats:sub>\n                    at higher temperatures verified a primary static quenching mechanism. The binding constant reached 10\n                    <jats:sup>6<\/jats:sup>\n                    \u2009L mol\n                    <jats:sup>\u22121<\/jats:sup>\n                    with nearly one binding site, indicating specific intermolecular binding. Negative \u0394\n                    <jats:italic>G<\/jats:italic>\n                    \u00b0 reflected spontaneous binding, while negative values of \u0394\n                    <jats:italic>H<\/jats:italic>\n                    \u00b0 and \u0394\n                    <jats:italic>S<\/jats:italic>\n                    \u00b0 indicated that hydrogen bonding and van der Waals forces were the main driving forces. FRET calculations gave\n                    <jats:italic>J<\/jats:italic>\n                    \u2009=\u20099.8871\u2009\u00d7\u200910\n                    <jats:sup>\u221215<\/jats:sup>\n                    \u2009cm\n                    <jats:sup>3<\/jats:sup>\n                    \u00b7L\u00b7mol\n                    <jats:sup>\u22121<\/jats:sup>\n                    ,\n                    <jats:italic>E<\/jats:italic>\n                    \u2009=\u200943.28%,\n                    <jats:italic>R<\/jats:italic>\n                    <jats:sub>0<\/jats:sub>\n                    \u2009=\u20092.127\u2009nm, and\n                    <jats:italic>r<\/jats:italic>\n                    \u2009=\u20092.225\u2009nm, confirming close\u2010range interaction. UV\u2013visible, synchronous, 3D fluorescence, FT\u2010IR, and circular dichroism spectra revealed that acacetin altered the microenvironment of aromatic residues and caused conformational alterations of pepsin, especially in\n                    <jats:italic>\u03b2<\/jats:italic>\n                    \u2010sheet structure. Molecular docking indicated steady binding of acacetin near the pepsin active cleft through hydrogen bonds and non\u2010covalent interactions. This work clarifies the molecular interaction mechanism, providing references for flavonoid\u2010protein studies, ligand design and relevant food and pharmaceutical applications.\n                  <\/jats:p>","DOI":"10.1002\/bio.70494","type":"journal-article","created":{"date-parts":[[2026,4,30]],"date-time":"2026-04-30T01:09:11Z","timestamp":1777511351000},"update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":0,"title":["The Interaction Between Acacetin and Pepsin: A Studied by Multi\u2010Spectral Method and Molecular Docking Simulation"],"prefix":"10.1002","volume":"41","author":[{"given":"Xiaolong","family":"Zhang","sequence":"first","affiliation":[{"name":"Key Laboratory of Medicinal Chemistry and Molecular Diagnosis of Ministry of Education, Key Laboratory of Analytical Science and Technology of Hebei Province, College of Chemistry and Materials Science Hebei University  Baoding China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-4497-0693","authenticated-orcid":false,"given":"Lei","family":"Shi","sequence":"additional","affiliation":[{"name":"College of Nursing Hebei University  Baoding P. 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