{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,9,29]],"date-time":"2026-09-29T06:40:28Z","timestamp":1790664028651,"version":"4.1.0"},"reference-count":54,"publisher":"American Chemical Society (ACS)","issue":"9","license":[{"start":{"date-parts":[[2026,9,9]],"date-time":"2026-09-09T00:00:00Z","timestamp":1788912000000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by-nc-nd\/4.0\/"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":[],"published-print":{"date-parts":[[2026,9,28]]},"abstract":"<jats:title>Abstract<\/jats:title>\n                  <jats:p>Integrins are crucial cell adhesion receptors and attractive therapeutic targets, but developing safe small-molecule inhibitors has been challenging, at least in part due to inadvertent partial agonism caused by stabilization of the integrin\u2019s open, high-affinity state. To address this challenge, we present a computational approach using Absolute Binding Free Energy Perturbation (AB-FEP) calculations to predict whether a ligand will stabilize the open or closed integrin states, leveraging the difference between the ligand\u2019s binding free energy to the respective end states. Despite challenges posed by Ca and Mg ions, metal-coordinating residues in the binding pocket, and the subtlety of structural differences between states, AB-FEP achieved excellent classification performance on a set of known opening and closing ligands, significantly outperforming docking scores and MM-GBSA results. We also showed a good correlation between AB-FEP binding free energy differences and experimental values. Furthermore, AB-FEP provided insights into intermediate integrin states and analysis of simulation trajectories confirmed the formation of a water-mediated hydrogen bond network with an ion in the binding pocket to be characteristic for closing ligands. This work demonstrates AB-FEP as a robust method for classifying integrin ligands by the conformation they stabilize and for understanding their functional mechanisms, offering valuable guidance for designing safe and conformationally selective integrin therapeutics.<\/jats:p>","DOI":"10.1021\/jacsau.6c00653","type":"journal-article","created":{"date-parts":[[2026,9,9]],"date-time":"2026-09-09T08:02:03Z","timestamp":1788940923000},"page":"5055-5067","source":"Crossref","is-referenced-by-count":1,"title":["Conformational Preference\nClassification of Integrin-Binding\nLigands Using Free Energy Perturbation"],"prefix":"10.1021","volume":"6","author":[{"given":"Martin","family":"Vo\u0308gele","sequence":"first","affiliation":[{"name":"Schro\u0308dinger, Inc ., 1540 Broadway, 24th Floor , , ,","place":["New York, New York, United States, 10036"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Rezvan","family":"Shahoei","sequence":"additional","affiliation":[{"name":"Schro\u0308dinger, Inc ., 1540 Broadway, 24th Floor , , ,","place":["New York, New York, United States, 10036"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Loukas","family":"Petridis","sequence":"additional","affiliation":[{"name":"Schro\u0308dinger, Inc ., 1540 Broadway, 24th Floor , , ,","place":["New York, New York, United States, 10036"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Jing","family":"Li","sequence":"additional","affiliation":[{"name":"Harvard Medical School , , 25 Shattuck St , , ,","place":["Boston, Massachusetts, United States, 02115"]},{"name":"Children\u2019s Hospital Boston , , 300 Longwood Ave , , ,","place":["Boston, Massachusetts, United States, 02115"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Fu-Yang","family":"Lin","sequence":"additional","affiliation":[{"name":"Eli Lilly and Company , 15 Necco St , , ,","place":["Boston, Massachusetts, United States, 02210"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-8170-6798","authenticated-orcid":true,"given":"Lingle","family":"Wang","sequence":"additional","affiliation":[{"name":"Schro\u0308dinger, Inc ., 1540 Broadway, 24th Floor , , ,","place":["New York, New York, United States, 10036"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Timothy A.","family":"Springer","sequence":"additional","affiliation":[{"name":"Children\u2019s Hospital Boston , , 300 Longwood Ave , , ,","place":["Boston, Massachusetts, United States, 02115"]},{"name":"Harvard Medical School , , 3 Blackfan Circle , , ,","place":["Boston, Massachusetts, United States, 02115"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-2498-1670","authenticated-orcid":true,"given":"Jeremie","family":"Vendome","sequence":"additional","affiliation":[{"name":"Schro\u0308dinger, Inc ., 1540 Broadway, 24th Floor , , ,","place":["New York, New York, United States, 10036"]}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"316","published-online":{"date-parts":[[2026,9,9]]},"reference":[{"issue":"5430","key":"2026092808084068400_cit1","doi-asserted-by":"publisher","first-page":"1028","DOI":"10.1126\/science.285.5430.1028","article-title":"Integrin Signaling","volume":"285","author":"Giancotti","year":"1999","journal-title":"Science"},{"issue":"6","key":"2026092808084068400_cit2","doi-asserted-by":"publisher","first-page":"673","DOI":"10.1016\/S0092-8674(02)00971-6","article-title":"Integrins:\nBidirectional, Allosteric Signaling Machines","volume":"110","author":"Hynes","year":"2002","journal-title":"Cell"},{"issue":"9","key":"2026092808084068400_cit3","doi-asserted-by":"publisher","DOI":"10.1101\/cshperspect.a005074","article-title":"Integrins in Cell Migration","volume":"3","author":"Huttenlocher","year":"2011","journal-title":"Cold Spring Harbor Perspect. 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