{"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\/sv\/2024\/06\/university-of-toronto-researchers-build-peptide-prediction-model-that-beats-alphafold-2\/","title":{"rendered":"Forskare vid University of Toronto bygger peptidprediktionsmodell som sl\u00e5r AlphaFold 2"},"content":{"rendered":"<p><b>Forskare vid University of Toronto's Donelly Centre har utvecklat en banbrytande AI-modell kallad PepFlow som kan f\u00f6ruts\u00e4ga de olika former som peptider antar med en aldrig tidigare sk\u00e5dad noggrannhet.\u00a0<\/b><\/p>\n<p><span style=\"font-weight: 400;\">Peptider \u00e4r sm\u00e5 molekyler som best\u00e5r av aminosyror, byggstenarna i proteiner.\u00a0<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Peptider liknar proteiner, men de \u00e4r mycket mindre och mer flexibla, vilket g\u00f6r att de kan vikas till en m\u00e4ngd olika former.\u00a0<\/span><\/p>\n<p><span style=\"font-weight: 400;\">En peptids specifika form \u00e4r avg\u00f6rande eftersom den best\u00e4mmer hur den interagerar med andra molekyler i kroppen, vilket i sin tur dikterar dess biologiska funktion.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Att f\u00f6ruts\u00e4ga proteiners och peptiders strukturer har l\u00e4nge varit en utmaning inom biologin. P\u00e5 grund av den komplexa matematik som \u00e4r inblandad \u00e4r det ett utm\u00e4rkt problem f\u00f6r maskininl\u00e4rning.\u00a0<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Under de senaste \u00e5ren har AI-modeller som <\/span><a href=\"https:\/\/dailyai.com\/sv\/2024\/05\/alphafold-3-deepmind-evolves-its-ai-protein-folding-project\/\"><span style=\"font-weight: 400;\">AlphaFold 2 och 3<\/span><\/a><span style=\"font-weight: 400;\">som utvecklats av Googles DeepMind, har revolutionerat f\u00f6ruts\u00e4gelsen av proteinstrukturer.\u00a0<\/span><\/p>\n<p><span style=\"font-weight: 400;\">AlphaFold2 anv\u00e4nder djupinl\u00e4rning f\u00f6r att f\u00f6ruts\u00e4ga ett proteins mest sannolika 3D-struktur baserat p\u00e5 dess aminosyrasekvens. Men w<\/span><span style=\"font-weight: 400;\">edan AlphaFold2 har varit otroligt framg\u00e5ngsrikt f\u00f6r proteiner har det sina begr\u00e4nsningar n\u00e4r det g\u00e4ller mycket flexibla molekyler som peptider.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">\"Vi har inte kunnat modellera hela spektrumet av konformationer f\u00f6r peptider f\u00f6rr\u00e4n 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;\">sade Osama Abdin<\/span><\/a><span style=\"font-weight: 400;\">, studiens f\u00f6rstef\u00f6rfattare.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Pepflow, dokumenterat i ett <a href=\"https:\/\/www.nature.com\/articles\/s42256-024-00860-4\" target=\"_blank\" rel=\"noopener\">studie publicerad<\/a> i Nature Machine Intelligence, \"utnyttjar djupinl\u00e4rning f\u00f6r att f\u00e5nga de exakta och exakta konformationerna hos en peptid inom n\u00e5gra minuter\".<\/span><\/p>\n<p><span style=\"font-weight: 400;\">PepFlow anv\u00e4nder AI-modeller inspirerade av <span class=\"noTranslate\" data-no-translation=\"\">Boltzmann generators.<\/span> Dessa modeller l\u00e4r sig de grundl\u00e4ggande fysiska principer som styr hur en peptids kemiska struktur best\u00e4mmer dess spektrum av m\u00f6jliga former.\u00a0<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Detta g\u00f6r att PepFlow med stor precision kan f\u00f6ruts\u00e4ga strukturen hos peptider med ovanliga egenskaper, t.ex. cirkul\u00e4ra peptider som bildas genom makrocyklisering. Makrocykliska peptider \u00e4r s\u00e4rskilt intressanta f\u00f6r l\u00e4kemedelsutveckling p\u00e5 grund av deras unika bindningsegenskaper.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Det som skiljer PepFlow fr\u00e5n modeller som AlphaFold2 \u00e4r dess f\u00f6rm\u00e5ga att inte bara f\u00f6ruts\u00e4ga en struktur, utan hela \"energilandskapet\" f\u00f6r en peptid.\u00a0<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Energilandskapet representerar alla m\u00f6jliga former som en peptid kan anta och hur den \u00f6verg\u00e5r mellan dessa olika konformationer.<\/span><\/p>\n<p><span style=\"font-weight: 400;\"> Att f\u00e5nga upp denna strukturella komplexitet \u00e4r nyckeln till u<\/span><span style=\"font-weight: 400;\">F\u00f6rst\u00e5else f\u00f6r hur peptider fungerar i olika biologiska sammanhang.<\/span><\/p>\n<blockquote class=\"twitter-tweet\">\n<p dir=\"ltr\" lang=\"en\">Forskare vid <a href=\"https:\/\/twitter.com\/UofT?ref_src=twsrc%5Etfw\">@UofT<\/a> har utvecklat en <a href=\"https:\/\/twitter.com\/hashtag\/DeepLearning?src=hash&amp;ref_src=twsrc%5Etfw\">#Djupt l\u00e4rande<\/a> modell, kallad PepFlow, som kan f\u00f6ruts\u00e4ga alla m\u00f6jliga former av peptider.<\/p>\n<p>PepFlow kan bidra till l\u00e4kemedelsutveckling genom design av peptider som fungerar som bindemedel. <a href=\"https:\/\/twitter.com\/hashtag\/DrugDiscovery?src=hash&amp;ref_src=twsrc%5Etfw\">1TP5L\u00e4kemedelsuppt\u00e4ckt<\/a><\/p>\n<p>L\u00e4s 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>Betydelse<\/h2>\n<p><span style=\"font-weight: 400;\">F\u00f6rm\u00e5gan att f\u00f6ruts\u00e4ga peptidstrukturer med h\u00f6g precision har stor betydelse f\u00f6r utvecklingen av peptidbaserade l\u00e4kemedel.\u00a0<\/span><\/p>\n<p><span style=\"font-weight: 400;\">\"Peptiderna var i fokus f\u00f6r PepFlow-modellen eftersom de \u00e4r mycket viktiga biologiska molekyler och de \u00e4r naturligtvis mycket dynamiska, s\u00e5 vi m\u00e5ste modellera deras olika konformationer f\u00f6r att f\u00f6rst\u00e5 deras funktion\", f\u00f6rklarar <span class=\"noTranslate\" data-no-translation=\"\">Philip M. Kim<\/span>, studiens huvudpr\u00f6vare.\u00a0<\/span><\/p>\n<p><span style=\"font-weight: 400;\">\"De \u00e4r ocks\u00e5 viktiga som l\u00e4kemedel, vilket framg\u00e5r av GLP1-analogerna, som Ozempic, som anv\u00e4nds f\u00f6r att behandla diabetes och fetma.\"<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Peptidl\u00e4kemedel har flera f\u00f6rdelar j\u00e4mf\u00f6rt med traditionella sm\u00e5molekyl\u00e4ra l\u00e4kemedel och st\u00f6rre proteinbaserade l\u00e4kemedel. De \u00e4r mer specifika i sin verkan, har l\u00e4gre toxicitet \u00e4n sm\u00e5molekyl\u00e4ra l\u00e4kemedel och \u00e4r billigare och enklare att producera \u00e4n st\u00f6rre proteinl\u00e4kemedel.\u00a0<\/span><\/p>\n<p><span style=\"font-weight: 400;\">PepFlow kan p\u00e5skynda uppt\u00e4ckten och utvecklingen av nya peptidbaserade l\u00e4kemedel genom att m\u00f6jligg\u00f6ra design av peptider med terapeutiska egenskaper.<\/span><\/p>\n<p>\"Det tog tv\u00e5 och ett halvt \u00e5r att utveckla PepFlow och en m\u00e5nad att tr\u00e4na upp det, men det var v\u00e4rt att ta steget till n\u00e4sta gr\u00e4ns, bortom modeller som bara f\u00f6rutsp\u00e5r en struktur hos en peptid\", avslutar Abdin.<\/p>\n<p>Detta f\u00f6ljer p\u00e5 lanseringen av\u00a0<a href=\"https:\/\/dailyai.com\/sv\/2024\/06\/evolutionaryscales-esm3-a-generative-model-for-biology\/\">EvolutionaryScale ESM3 denna vecka<\/a>en generativ gr\u00e4nsmodell f\u00f6r biologi, som ocks\u00e5 fokuserar p\u00e5 proteiner.<\/p>","protected":false},"excerpt":{"rendered":"<p>Forskare vid University of Toronto's Donelly Centre har utvecklat en banbrytande AI-modell kallad PepFlow som kan f\u00f6ruts\u00e4ga de olika former som peptider antar med en aldrig tidigare sk\u00e5dad noggrannhet.  Peptider \u00e4r sm\u00e5 molekyler som best\u00e5r av aminosyror, byggstenarna i proteiner.  \u00c4ven om peptider liknar proteiner \u00e4r de mycket mindre och mer flexibla, vilket g\u00f6r att de kan vikas till en m\u00e4ngd olika former.  En peptids specifika form \u00e4r avg\u00f6rande eftersom den avg\u00f6r hur den interagerar med andra molekyler i kroppen, vilket i sin tur dikterar dess biologiska funktion. Att f\u00f6ruts\u00e4ga proteiners och peptiders strukturer har l\u00e4nge varit ett<\/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\/sv\/2024\/06\/university-of-toronto-researchers-build-peptide-prediction-model-that-beats-alphafold-2\/\" \/>\n<meta property=\"og:locale\" content=\"sv_SE\" \/>\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\/sv\/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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