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Cells were lysed using 1% SDS and reduction and alkylaiton were carried out using TCEP (10 mM) and 2-chloroacetamide (40 mM). Protein precipitation was carried out using an sp4 protocol. A solution of trypsin (6.25 ng/μL) in 25 mM ammonium bicarbonate buffer was added to the protein pellet, and the pellet was digested overnight at 37 degrees celcius. Sample (10 ng) was loaded onto Evotips for processing using nanoLC-MS/MS using an Evosep One coupled with a timsTOF HT (Bruker) equipped with an 8 cm × 150 µm, 1.5 µm analytical column (Evosep)."],"repository":["Pride"],"quantification_method":[""],"modification":[""],"data_protocol":["diaPASEF Bruker .d files were processed using library-free analysis in DIA-NN (version 1.8.1) 9 using the following parameters: Human database (downloaded from Uniprot on 6 June 2022 containing 79334 proteins); “deep learning-based spectra and RTs prediction” was enabled; trypsin with 1 missed cleavages; N-term Excision, C carbamidomethylation, Oxidation and N terminal Acetylation were enabled with maximum 2 variable modifications; MBR was enabled; quantification strategy set to “Robust LC (high precision)”; heuristic protein inference was disabled; Mass and MS1 accuracy set to 0."],"omics_type":["Proteomics"],"labhead":["Anna Barnard"],"instrument_platform":[""],"submission_type":["PARTIAL"],"labhead_affiliation":["Imperial College London"],"species":["Homo Sapiens (human)"],"publication":["10.1039/D6CB00065G"],"submitter_mail":["a.date19@imperial.ac.uk"],"submitter_affiliation":["Imperial College London"],"submitter_country":["United Kingdom"],"additional_accession":[]},"is_claimable":false,"name":"Whole proteome characterisation following treatment with α-helix mimetic inhibitors of MDM2","description":"A wide range of small molecule scaffolds capable of mimicking protein α-helices to modulate protein-protein interactions have been reported, yet their target selectivity is poorly understood. Here, we report the changes to the whole protoeme of SJSA-1 osteosarcoma cells following treatment with three structurally distinct classes of α-helix mimetics, N-substituted oligobenzamides, pyrrolopyrimidines, and oxopiperazines, all reported to inhibit the interaction between the tumour suppressor protein p53 and its negative regulator murine double minute 2 (MDM2).","dates":{"publication":"2026-08-05","submission":"2025-04-28"},"accession":"PXD063398","cross_references":{"TAXONOMY":["NEWT:6945","NEWT:3555","NEWT:2","NEWT:157546","NEWT:35554","NEWT:38942","NEWT:307972","NEWT:32046","NEWT:544496","NEWT:2042546","NEWT:45351","NEWT:43179","NEWT:4513","NEWT:5722","NEWT:376741","NEWT:55153","NCBITaxon:10407","NEWT:1736309","NEWT:309800","NEWT:1211601","NEWT:876138","NEWT:237561","NEWT:5833","NEWT:6928","NEWT:10036","NEWT:36745","NEWT:1351","NEWT:1438992","NEWT:2649997","NEWT:272563","NEWT:224326","NCBITaxon:79857","NEWT:1096976","NEWT:95648","NEWT:3885","NEWT:3888","NEWT:1589","NEWT:135622","NEWT:6915","NEWT:3649","NEWT:101510","NEWT:3880","NEWT:272559","NEWT:3641","NEWT:383379","NEWT:466585","NEWT:10029","NEWT:1000589","NEWT:85963","NEWT:85962","NEWT:317447","NEWT:7955","NEWT:7959","NEWT:2261","NEWT:31156","NEWT:398580","NEWT:4565","NEWT:1264690","NEWT:515619","NEWT:192875","NEWT:34305","NEWT:59729","NCBITaxon:183674","NEWT:224308","NEWT:84645","NEWT:626528","NEWT:139927","NEWT:4558","NEWT:209285","NEWT:1283","NEWT:931281","NEWT:4550","NEWT:1000561","NEWT:197","NCBITaxon:79824","NEWT:4787","NCBITaxon:4563","NEWT:5755","NEWT:44689","NEWT:3218","NEWT:5759","NEWT:1736231","NEWT:1270","NEWT:2242","NEWT:4784","NEWT:11320","NEWT:360106","NEWT:286","NEWT:287","NEWT:10117","NEWT:10239","NEWT:10116","NEWT:1280","NEWT:1735272","NEWT:83334","NEWT:83332","NEWT:44685","NEWT:317513","NEWT:1148","NEWT:580240","NEWT:294128","NEWT:11676","NEWT:55571","NEWT:100226","NEWT:4530","NEWT:4896","NEWT:75058","NEWT:13616","NEWT:1094343","NEWT:296543","NEWT:1773","NEWT:1895","NEWT:1182590","NEWT:935293","NEWT:64152","NEWT:4924","NEWT:749200","NEWT:990346","NEWT:145953","NEWT:257309","NEWT:100816","NEWT:263","NEWT:230741","NEWT:52283","NEWT:284812","NCBITaxon:1313","NEWT:43330","NEWT:1603293","NEWT:408169","NEWT:44544","NEWT:4911","NEWT:645463","NEWT:3702","NEWT:129249","NEWT:243277","NEWT:990119","NEWT:408172","NEWT:408170","NEWT:493760","NEWT:260710","NEWT:257313","NEWT:400772","NEWT:3708","NEWT:128161","NEWT:332648","NEWT:106592","NEWT:536231","NEWT:460519","NEWT:1187947","NEWT:1432138","NEWT:10312","NEWT:1424507","NCBITaxon:1773","NEWT:9598","NEWT:8030","NEWT:1639","NEWT:188229","NEWT:3818","NEWT:480","NEWT:4909","NEWT:67767","NEWT:432359","NEWT:46835","NEWT:1182263","NEWT:2711","NEWT:376686","NEWT:95486","NEWT:9103","NEWT:29159","NEWT:253","NEWT:10306","NCBITaxon:2759","NEWT:1233435","NEWT:8022","NEWT:145943","NCBITaxon:4932","NEWT:595536","NEWT:240906","NEWT:593117","NEWT:3635","NEWT:5811","NEWT:235443","NEWT:272624","NEWT:411483","NEWT:884019","NEWT:198215","NEWT:411490","NEWT:983964","NEWT:169963","NEWT:32644","NEWT:499175","NEWT:109779","NEWT:476272","NEWT:3747","NEWT:195051","NEWT:367830","NEWT:1255228","NEWT:178616","NEWT:410289","NEWT:373153","NEWT:352472","NEWT:357","NEWT:360094","NEWT:470","NEWT:1313","NEWT:411469","NEWT:84023","NEWT:559292","NEWT:39491","NCBITaxon:5811","NEWT:411464","NEWT:411460","NEWT:2014887","NEWT:2762","NEWT:1174673","NEWT:562","NEWT:411470","NEWT:33952","NEWT:2094720","NCBITaxon:2697049","NEWT:571256","NEWT:28038","NEWT:1663","NEWT:1423","NEWT:4932","NEWT:3603","NEWT:2759","NEWT:3847","NEWT:327159","NEWT:178876","NEWT:327160","NEWT:573","NEWT:9031","NEWT:7091","NEWT:241368","NEWT:42528","NEWT:190802","NEWT:9778","NEWT:150475","NEWT:303","NEWT:9417","NEWT:7111","NEWT:347515","NEWT:1216979","NEWT:5180","NEWT:256737","NEWT:115104","NEWT:1121114","NEWT:663","NEWT:1081927","NEWT:1238993","NEWT:67825","NEWT:185579","NEWT:941442","NEWT:220668","NEWT:13076","NEWT:1249668","NEWT:317","NEWT:7227","NEWT:7469","NEWT:885318","NEWT:9402","NEWT:415540","NEWT:550","NEWT:675060","NEWT:4081","NEWT:334542","NEWT:554","NEWT:98334","NEWT:426428","NEWT:7574","NEWT:1715256","NEWT:7215","NEWT:575412","NEWT:29204","NEWT:2172103","NEWT:507601","NEWT:643680","NCBITaxon:6157","NEWT:746360","NEWT:6239","NEWT:470150","NEWT:216257","NEWT:102169","NEWT:9986","NEWT:4054","NEWT:73239","NEWT:226186","NEWT:1268063","NEWT:8782","NEWT:1263854","NEWT:435590","NEWT:1902","NEWT:160488","NEWT:28104","NEWT:1908","NCBITaxon:2","NEWT:985076","NEWT:1215323","NEWT:52641","NEWT:7038","NEWT:6192","NEWT:28532","NCBITaxon:38727","NEWT:353152","NEWT:2829","NEWT:366581","NEWT:216599","NEWT:216595","NEWT:243230","NEWT:8355","NEWT:9685","NEWT:7029","NEWT:1080772","NEWT:1283300","NEWT:6183","NEWT:6063","NEWT:334747","NEWT:61235","NEWT:6289","NEWT:436486","NEWT:6287","NEWT:300641","NEWT:727","NEWT:9796","NEWT:725","NEWT:170187","NEWT:260707","NCBITaxon:6191","NEWT:1836","NEWT:185431","NEWT:29760","NEWT:260704","NEWT:703612","NEWT:260705","NEWT:80863","NEWT:2697049","NEWT:105231","NEWT:1216981","NCBITaxon:6073","NEWT:884204","NEWT:6279","NEWT:1123869","NEWT:9544","NEWT:7370","NEWT:83906","NEWT:607699","NEWT:6282","NEWT:208964","NEWT:1134506","NEWT:575584","NEWT:38783","NEWT:8727","NEWT:4006","NEWT:8726","NEWT:6426","NEWT:6669","NEWT:10090","NEWT:4120","NEWT:51515","NEWT:5693","NEWT:8724","NEWT:51511","NEWT:92867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