{"id":13145,"date":"2024-06-28T10:17:24","date_gmt":"2024-06-28T10:17:24","guid":{"rendered":"https:\/\/dailyai.com\/?p=13145"},"modified":"2024-07-01T11:19:48","modified_gmt":"2024-07-01T11:19:48","slug":"university-of-toronto-researchers-build-peptide-prediction-model-that-beats-alphafold-2","status":"publish","type":"post","link":"https:\/\/dailyai.com\/da\/2024\/06\/university-of-toronto-researchers-build-peptide-prediction-model-that-beats-alphafold-2\/","title":{"rendered":"Forskere fra University of Toronto bygger peptidforudsigelsesmodel, der sl\u00e5r AlphaFold 2"},"content":{"rendered":"<p><b>Forskere ved University of Toronto's Donelly Centre har udviklet en banebrydende AI-model kaldet PepFlow, der kan forudsige de forskellige former, som peptider antager, med en hidtil uset n\u00f8jagtighed.\u00a0<\/b><\/p>\n<p><span style=\"font-weight: 400;\">Peptider er sm\u00e5 molekyler, der best\u00e5r af aminosyrer, som er byggestenene i proteiner.\u00a0<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Selvom peptider ligner proteiner, er de meget mindre og mere fleksible, hvilket g\u00f8r det muligt for dem at folde sig i mange forskellige former.\u00a0<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Et peptids specifikke form er afg\u00f8rende, fordi den bestemmer, hvordan det interagerer med andre molekyler i kroppen, hvilket igen dikterer dets biologiske funktion.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Forudsigelse af proteiners og peptiders strukturer har l\u00e6nge v\u00e6ret en udfordring i biologien. P\u00e5 grund af den komplekse matematik, der er involveret, er det et fremragende problem for maskinl\u00e6ring.\u00a0<\/span><\/p>\n<p><span style=\"font-weight: 400;\">I de seneste \u00e5r har AI-modeller som <\/span><a href=\"https:\/\/dailyai.com\/da\/2024\/05\/alphafold-3-deepmind-evolves-its-ai-protein-folding-project\/\"><span style=\"font-weight: 400;\">AlphaFold 2 og 3<\/span><\/a><span style=\"font-weight: 400;\">udviklet af Googles DeepMind, har revolutioneret forudsigelsen af proteinstrukturer.\u00a0<\/span><\/p>\n<p><span style=\"font-weight: 400;\">AlphaFold2 bruger deep learning til at forudsige et proteins mest sandsynlige 3D-struktur ud fra dets aminosyresekvens. Men vi<\/span><span style=\"font-weight: 400;\">elvom AlphaFold2 har v\u00e6ret en utrolig succes for proteiner, har det sine begr\u00e6nsninger, n\u00e5r det g\u00e6lder meget fleksible molekyler som peptider.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">\"Vi har ikke v\u00e6ret i stand til at modellere hele spektret af konformationer for peptider f\u00f8r nu\". <\/span><a href=\"https:\/\/thedonnellycentre.utoronto.ca\/news\/u-t-researchers-develop-deep-learning-model-outperforms-google-ai-system-predict-peptide\" target=\"_blank\" rel=\"noopener\"><span style=\"font-weight: 400;\">sagde Osama Abdin<\/span><\/a><span style=\"font-weight: 400;\">, unders\u00f8gelsens f\u00f8rsteforfatter.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Pepflow, dokumenteret i en <a href=\"https:\/\/www.nature.com\/articles\/s42256-024-00860-4\" target=\"_blank\" rel=\"noopener\">unders\u00f8gelse offentliggjort<\/a> i Nature Machine Intelligence, \"udnytter dyb l\u00e6ring til at fange de pr\u00e6cise og n\u00f8jagtige konformationer af et peptid inden for f\u00e5 minutter.\"<\/span><\/p>\n<p><span style=\"font-weight: 400;\">PepFlow anvender AI-modeller inspireret af <span class=\"noTranslate\" data-no-translation=\"\">Boltzmann generators.<\/span> Disse modeller l\u00e6rer de grundl\u00e6ggende fysiske principper, der styrer, hvordan et peptids kemiske struktur bestemmer dets spektrum af mulige former.\u00a0<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Det g\u00f8r det muligt for PepFlow pr\u00e6cist at forudsige strukturer af peptider med us\u00e6dvanlige egenskaber, f.eks. cirkul\u00e6re peptider, der er dannet ved makrocyklisering. Makrocykliske peptider er s\u00e6rligt interessante for l\u00e6gemiddeludvikling p\u00e5 grund af deres unikke bindingsegenskaber.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Det, der adskiller PepFlow fra modeller som AlphaFold2, er dens evne til at forudsige ikke bare \u00e9n struktur, men hele \"energilandskabet\" i et peptid.\u00a0<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Energilandskabet repr\u00e6senterer alle de mulige former, et peptid kan antage, og hvordan det skifter mellem disse forskellige konformationer.<\/span><\/p>\n<p><span style=\"font-weight: 400;\"> At indfange denne strukturelle kompleksitet er n\u00f8glen til u<\/span><span style=\"font-weight: 400;\">ndervisning i, hvordan peptider fungerer i forskellige biologiske sammenh\u00e6nge.<\/span><\/p>\n<blockquote class=\"twitter-tweet\">\n<p dir=\"ltr\" lang=\"en\">Forskere ved <a href=\"https:\/\/twitter.com\/UofT?ref_src=twsrc%5Etfw\">@UofT<\/a> har udviklet en <a href=\"https:\/\/twitter.com\/hashtag\/DeepLearning?src=hash&amp;ref_src=twsrc%5Etfw\">#DybdeL\u00e6ring<\/a> model, kaldet PepFlow, der kan forudsige alle mulige former for peptider.<\/p>\n<p>PepFlow kan informere l\u00e6gemiddeludviklingen gennem design af peptider, der fungerer som bindemidler. <a href=\"https:\/\/twitter.com\/hashtag\/DrugDiscovery?src=hash&amp;ref_src=twsrc%5Etfw\">1TP5DrugDiscovery<\/a><\/p>\n<p>F\u00e5 mere at vide \ud83d\udc49 <a href=\"https:\/\/t.co\/eAKOg5e7Cz\">https:\/\/t.co\/eAKOg5e7Cz<\/a> <a href=\"https:\/\/t.co\/mYP9YeiCOe\">pic.twitter.com\/mYP9YeiCOe<\/a><\/p>\n<p>- Donnelly Center (@DonnellyCentre) <a href=\"https:\/\/twitter.com\/DonnellyCentre\/status\/1806328554348527953?ref_src=twsrc%5Etfw\">27. juni 2024<\/a><\/p><\/blockquote>\n<p><script async src=\"https:\/\/platform.twitter.com\/widgets.js\" charset=\"utf-8\"><\/script><\/p>\n<h2>Betydning<\/h2>\n<p><span style=\"font-weight: 400;\">Evnen til at forudsige meget pr\u00e6cise peptidstrukturer har stor betydning for udviklingen af peptidbaserede l\u00e6gemidler.\u00a0<\/span><\/p>\n<p><span style=\"font-weight: 400;\">\"Peptider var fokus for PepFlow-modellen, fordi de er meget vigtige biologiske molekyler, og de er naturligvis meget dynamiske, s\u00e5 vi er n\u00f8dt til at modellere deres forskellige konformationer for at forst\u00e5 deres funktion,\" forklarer han. <span class=\"noTranslate\" data-no-translation=\"\">Philip M. Kim<\/span>, unders\u00f8gelsens ledende investigator.\u00a0<\/span><\/p>\n<p><span style=\"font-weight: 400;\">\"De er ogs\u00e5 vigtige som l\u00e6gemidler, som man kan se med GLP1-analoger som Ozempic, der bruges til at behandle diabetes og fedme.\"<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Peptidl\u00e6gemidler har flere fordele i forhold til traditionelle sm\u00e5molekyl\u00e6re l\u00e6gemidler og st\u00f8rre proteinbaserede l\u00e6gemidler. De er mere specifikke i deres virkning, har lavere toksicitet end sm\u00e5molekyl\u00e6re l\u00e6gemidler og er billigere og lettere at producere end st\u00f8rre proteinl\u00e6gemidler.\u00a0<\/span><\/p>\n<p><span style=\"font-weight: 400;\">PepFlow kan fremskynde opdagelsen og udviklingen af nye peptidbaserede l\u00e6gemidler ved at g\u00f8re det muligt at designe peptider med terapeutiske egenskaber.<\/span><\/p>\n<p>\"Det tog to et halvt \u00e5r at udvikle PepFlow og en m\u00e5ned at tr\u00e6ne det, men det var umagen v\u00e6rd at bev\u00e6ge sig til den n\u00e6ste gr\u00e6nse, ud over modeller, der kun forudsiger \u00e9n struktur af et peptid\", konkluderer Abdin.<\/p>\n<p>Det sker efter udgivelsen af\u00a0<a href=\"https:\/\/dailyai.com\/da\/2024\/06\/evolutionaryscales-esm3-a-generative-model-for-biology\/\">EvolutionaryScale ESM3 i denne uge<\/a>en gr\u00e6nses\u00f8gende generativ model for biologi, som ogs\u00e5 fokuserer p\u00e5 proteiner.<\/p>","protected":false},"excerpt":{"rendered":"<p>Forskere ved University of Toronto's Donelly Centre har udviklet en banebrydende AI-model kaldet PepFlow, der kan forudsige de forskellige former, som peptider antager, med en hidtil uset n\u00f8jagtighed.  Peptider er sm\u00e5 molekyler, der best\u00e5r af aminosyrer, byggestenene i proteiner.  Selvom peptider ligner proteiner, er de meget mindre og mere fleksible, hvilket g\u00f8r det muligt for dem at folde sig i et stort udvalg af former.  Et peptids specifikke form er afg\u00f8rende, fordi den bestemmer, hvordan det interagerer med andre molekyler i kroppen, hvilket igen dikterer dets biologiske funktion. Forudsigelse af proteiners og peptiders strukturer har l\u00e6nge v\u00e6ret et<\/p>","protected":false},"author":2,"featured_media":13152,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[88],"tags":[353,204,178],"class_list":["post-13145","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-ethics","tag-biology","tag-healthcare","tag-medicine"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.4 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>University of Toronto researchers build peptide prediction model that beats AlphaFold 2 | DailyAI<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/dailyai.com\/da\/2024\/06\/university-of-toronto-researchers-build-peptide-prediction-model-that-beats-alphafold-2\/\" \/>\n<meta property=\"og:locale\" content=\"da_DK\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"University of Toronto researchers build peptide prediction model that beats AlphaFold 2 | DailyAI\" \/>\n<meta property=\"og:description\" content=\"Scientists at the University of Toronto&#8217;s Donelly Centre have developed a cutting-edge AI model called PepFlow that can predict the diverse shapes that peptides adopt with unprecedented accuracy.\u00a0 Peptides are small molecules made up of amino acids, the building blocks of proteins.\u00a0 While peptides are similar to proteins, they\u2019re much smaller and more flexible, allowing them to fold into a huge variety of shapes.\u00a0 A peptide&#8217;s specific shape is crucial because it determines how it interacts with other molecules in the body, which in turn dictates its biological function. Predicting the structures of proteins and peptides has been a longstanding\" \/>\n<meta property=\"og:url\" content=\"https:\/\/dailyai.com\/da\/2024\/06\/university-of-toronto-researchers-build-peptide-prediction-model-that-beats-alphafold-2\/\" \/>\n<meta property=\"og:site_name\" content=\"DailyAI\" \/>\n<meta property=\"article:published_time\" content=\"2024-06-28T10:17:24+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2024-07-01T11:19:48+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/dailyai.com\/wp-content\/uploads\/2024\/06\/DALL\u00b7E-2024-06-28-11.28.34-Create-a-high-quality-smooth-landscape-image-focusing-on-peptides-in-a-futuristic-lab-environment.-The-image-should-display-clear-molecular-structure.webp\" \/>\n\t<meta property=\"og:image:width\" content=\"1792\" \/>\n\t<meta property=\"og:image:height\" content=\"1024\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/webp\" \/>\n<meta name=\"author\" content=\"Sam Jeans\" \/>\n<meta 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