{"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\/nb\/2024\/06\/university-of-toronto-researchers-build-peptide-prediction-model-that-beats-alphafold-2\/","title":{"rendered":"Forskere ved University of Toronto bygger peptidprediksjonsmodell som sl\u00e5r AlphaFold 2"},"content":{"rendered":"<p><b>Forskere ved Donelly Centre ved University of Toronto har utviklet en banebrytende AI-modell kalt PepFlow, som kan forutsi de ulike formene som peptider antar, med enest\u00e5ende n\u00f8yaktighet.\u00a0<\/b><\/p>\n<p><span style=\"font-weight: 400;\">Peptider er sm\u00e5 molekyler som best\u00e5r av aminosyrer, byggesteinene i proteiner.\u00a0<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Peptider ligner p\u00e5 proteiner, men de er mye mindre og mer fleksible, noe som gj\u00f8r at de kan foldes i en rekke ulike former.\u00a0<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Et peptids spesifikke form er avgj\u00f8rende fordi den bestemmer hvordan det interagerer med andre molekyler i kroppen, noe som i sin tur dikterer dets biologiske funksjon.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">\u00c5 forutsi strukturen til proteiner og peptider har lenge v\u00e6rt en utfordring innen biologien. P\u00e5 grunn av den komplekse matematikken som er involvert, er det et utmerket problem for maskinl\u00e6ring.\u00a0<\/span><\/p>\n<p><span style=\"font-weight: 400;\">De siste \u00e5rene har AI-modeller som <\/span><a href=\"https:\/\/dailyai.com\/nb\/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;\">utviklet av Googles DeepMind, har revolusjonert prediksjon av proteinstrukturer.\u00a0<\/span><\/p>\n<p><span style=\"font-weight: 400;\">AlphaFold2 bruker dyp l\u00e6ring til \u00e5 forutsi den mest sannsynlige 3D-strukturen til et protein basert p\u00e5 aminosyresekvensen. Men w<\/span><span style=\"font-weight: 400;\">elv om AlphaFold2 har v\u00e6rt utrolig vellykket for proteiner, har det sine begrensninger n\u00e5r det gjelder sv\u00e6rt fleksible molekyler som peptider.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">\"Vi har ikke v\u00e6rt i stand til \u00e5 modellere hele spekteret av konformasjoner for peptider f\u00f8r n\u00e5\", sier han. <\/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;\">sa Osama Abdin<\/span><\/a><span style=\"font-weight: 400;\">, studiens f\u00f8rsteforfatter.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Pepflow, dokumentert i en <a href=\"https:\/\/www.nature.com\/articles\/s42256-024-00860-4\" target=\"_blank\" rel=\"noopener\">studie publisert<\/a> i Nature Machine Intelligence, \"utnytter dyp l\u00e6ring til \u00e5 fange opp presise og n\u00f8yaktige konformasjoner av et peptid i l\u00f8pet av minutter\".<\/span><\/p>\n<p><span style=\"font-weight: 400;\">PepFlow benytter AI-modeller inspirert av <span class=\"noTranslate\" data-no-translation=\"\">Boltzmann generators.<\/span> Disse modellene l\u00e6rer oss de grunnleggende fysiske prinsippene som styrer hvordan peptiders kjemiske struktur bestemmer spekteret av mulige former.\u00a0<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Dette gj\u00f8r det mulig for PepFlow \u00e5 forutsi strukturene til peptider med uvanlige egenskaper, for eksempel sirkul\u00e6re peptider som dannes gjennom makrosyklisering. Makrosykliske peptider er spesielt interessante for legemiddelutvikling p\u00e5 grunn av deres unike bindingsegenskaper.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Det som skiller PepFlow fra modeller som AlphaFold2, er at den ikke bare kan forutsi \u00e9n struktur, men hele \"energilandskapet\" til et peptid.\u00a0<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Energilandskapet representerer alle de mulige formene et peptid kan anta, og hvordan det skifter mellom disse ulike konformasjonene.<\/span><\/p>\n<p><span style=\"font-weight: 400;\"> \u00c5 fange opp denne strukturelle kompleksiteten er n\u00f8kkelen til \u00e5<\/span><span style=\"font-weight: 400;\">nderst\u00e5 hvordan peptider fungerer i ulike biologiske sammenhenger.<\/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 utviklet en <a href=\"https:\/\/twitter.com\/hashtag\/DeepLearning?src=hash&amp;ref_src=twsrc%5Etfw\">#DeepLearning<\/a> modell, kalt PepFlow, som kan forutsi alle mulige peptidformer.<\/p>\n<p>PepFlow kan bidra til legemiddelutvikling gjennom design av peptider som fungerer som bindemidler. <a href=\"https:\/\/twitter.com\/hashtag\/DrugDiscovery?src=hash&amp;ref_src=twsrc%5Etfw\">#DrugDiscovery<\/a><\/p>\n<p>L\u00e6r mer \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 Centre (@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 \u00e5 forutsi sv\u00e6rt n\u00f8yaktige peptidstrukturer har stor betydning for utviklingen av peptidbaserte legemidler.\u00a0<\/span><\/p>\n<p><span style=\"font-weight: 400;\">\"Peptider var i fokus i PepFlow-modellen fordi de er sv\u00e6rt viktige biologiske molekyler, og de er naturlig nok sv\u00e6rt dynamiske, s\u00e5 vi m\u00e5 modellere de ulike konformasjonene deres for \u00e5 forst\u00e5 funksjonen deres, forklarer han. <span class=\"noTranslate\" data-no-translation=\"\">Philip M. Kim<\/span>, studiens hovedutforsker.\u00a0<\/span><\/p>\n<p><span style=\"font-weight: 400;\">\"De er ogs\u00e5 viktige som legemidler, noe GLP1-analoger som Ozempic, som brukes til behandling av diabetes og fedme, er et eksempel p\u00e5.\"<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Peptidmedisiner har flere fordeler i forhold til tradisjonelle sm\u00e5molekyl\u00e6re legemidler og st\u00f8rre proteinbaserte legemidler. De virker mer spesifikt, har lavere toksisitet enn sm\u00e5molekyl\u00e6re legemidler og er billigere og enklere \u00e5 produsere enn st\u00f8rre proteinmedisiner.\u00a0<\/span><\/p>\n<p><span style=\"font-weight: 400;\">PepFlow kan fremskynde oppdagelsen og utviklingen av nye peptidbaserte legemidler ved \u00e5 gj\u00f8re det mulig \u00e5 designe peptider med terapeutiske egenskaper.<\/span><\/p>\n<p>\"Det tok to og et halvt \u00e5r \u00e5 utvikle PepFlow og \u00e9n m\u00e5ned \u00e5 trene den opp, men det var verdt det \u00e5 bevege seg til neste grense, forbi modeller som bare forutsier \u00e9n struktur av et peptid\", konkluderer Abdin.<\/p>\n<p>Dette skjer etter utgivelsen av\u00a0<a href=\"https:\/\/dailyai.com\/nb\/2024\/06\/evolutionaryscales-esm3-a-generative-model-for-biology\/\">EvolutionaryScale ESM3 denne uken<\/a>, en generativ modell for biologi, som ogs\u00e5 fokuserer p\u00e5 proteiner.<\/p>","protected":false},"excerpt":{"rendered":"<p>Forskere ved Donelly Centre ved University of Toronto har utviklet en banebrytende AI-modell kalt PepFlow, som kan forutsi de ulike formene som peptider antar med enest\u00e5ende n\u00f8yaktighet.  Peptider er sm\u00e5 molekyler som best\u00e5r av aminosyrer, byggesteinene i proteiner.  Selv om peptider ligner p\u00e5 proteiner, er de mye mindre og mer fleksible, noe som gj\u00f8r at de kan foldes i et stort utvalg av former.  Et peptids spesifikke form er avgj\u00f8rende fordi den bestemmer hvordan det interagerer med andre molekyler i kroppen, noe som i sin tur dikterer dets biologiske funksjon. \u00c5 forutsi strukturen til proteiner og peptider har lenge v\u00e6rt 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\/nb\/2024\/06\/university-of-toronto-researchers-build-peptide-prediction-model-that-beats-alphafold-2\/\" \/>\n<meta property=\"og:locale\" content=\"nb_NO\" \/>\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\/nb\/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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