{"id":12117,"date":"2024-05-10T18:23:39","date_gmt":"2024-05-10T18:23:39","guid":{"rendered":"https:\/\/dailyai.com\/?p=12117"},"modified":"2024-05-12T19:00:09","modified_gmt":"2024-05-12T19:00:09","slug":"alphafold-3-deepmind-evolves-its-ai-protein-folding-project","status":"publish","type":"post","link":"https:\/\/dailyai.com\/fr\/2024\/05\/alphafold-3-deepmind-evolves-its-ai-protein-folding-project\/","title":{"rendered":"AlphaFold 3 : DeepMind fait \u00e9voluer son projet d'IA de repliement des prot\u00e9ines"},"content":{"rendered":"<p><b><span class=\"noTranslate\" data-no-translation=\"\"><span class=\"noTranslate\" data-no-translation=\"\"><span class=\"noTranslate\" data-no-translation=\"\"><span class=\"noTranslate\" data-no-translation=\"\"><span class=\"noTranslate\" data-no-translation=\"\"><span class=\"noTranslate\" data-no-translation=\"\"><span class=\"noTranslate\" data-no-translation=\"\"><span class=\"noTranslate\" data-no-translation=\"\"><span class=\"noTranslate\" data-no-translation=\"\"><span class=\"noTranslate\" data-no-translation=\"\"><span class=\"noTranslate\" data-no-translation=\"\"><span class=\"noTranslate\" data-no-translation=\"\">DeepMind<\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span> annonc\u00e9e <span class=\"noTranslate\" data-no-translation=\"\">AlphaFold 3<\/span>, la derni\u00e8re it\u00e9ration de son projet de repliement des prot\u00e9ines. <\/b><\/p>\n<p><span style=\"font-weight: 400;\"><span class=\"noTranslate\" data-no-translation=\"\">AlphaFold 3<\/span>Comme ses pr\u00e9d\u00e9cesseurs, il pr\u00e9dit principalement la fa\u00e7on dont les prot\u00e9ines se replient sur la base de leurs s\u00e9quences d'acides amin\u00e9s. <\/span><\/p>\n<p><span style=\"font-weight: 400;\">Les prot\u00e9ines, \u00e9l\u00e9ments constitutifs de toute vie organique, sont constitu\u00e9es de longues cha\u00eenes d'acides amin\u00e9s qui se plient comme un origami pour former des structures en trois dimensions qui d\u00e9terminent leurs fonctions.\u00a0<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Comprendre comment ces structures se replient ouvre la voie au d\u00e9cryptage des m\u00e9canismes mol\u00e9culaires qui sous-tendent la sant\u00e9 et la maladie.<\/span><\/p>\n<p>Par exemple, dans certains cas, les prot\u00e9ines peuvent \u00eatre mal repli\u00e9es, ce qui perturbe leur fonction normale et contribue au d\u00e9veloppement de maladies telles que les maladies d'Alzheimer et de Parkinson.<\/p>\n<p>Les erreurs de pliage peuvent nuire \u00e0 la sant\u00e9 cellulaire en accumulant des prot\u00e9ines dysfonctionnelles qui peuvent endommager les cellules et les tissus.<\/p>\n<p class=\"whitespace-pre-wrap break-words\">En \u00e9lucidant les m\u00e9canismes \u00e0 l'origine de ce processus, les scientifiques peuvent mettre au point des m\u00e9dicaments qui d\u00e9barrassent efficacement l'organisme des prot\u00e9ines mal repli\u00e9es accumul\u00e9es ou des interventions qui emp\u00eachent le mauvais pliage de se produire en premier lieu.<\/p>\n<p><iframe loading=\"lazy\" title=\"Le repliement des prot\u00e9ines expliqu\u00e9\" width=\"1080\" height=\"608\" src=\"https:\/\/www.youtube.com\/embed\/KpedmJdrTpY?feature=oembed\" frameborder=\"0\" allow=\"accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture; web-share\" referrerpolicy=\"strict-origin-when-cross-origin\" allowfullscreen><\/iframe><\/p>\n<h2>Pr\u00e9sentation d'AlphaFold 3<\/h2>\n<p><span style=\"font-weight: 400;\"><span class=\"noTranslate\" data-no-translation=\"\"><span class=\"noTranslate\" data-no-translation=\"\"><span class=\"noTranslate\" data-no-translation=\"\"><span class=\"noTranslate\" data-no-translation=\"\"><span class=\"noTranslate\" data-no-translation=\"\"><span class=\"noTranslate\" data-no-translation=\"\"><span class=\"noTranslate\" data-no-translation=\"\"><span class=\"noTranslate\" data-no-translation=\"\"><span class=\"noTranslate\" data-no-translation=\"\"><span class=\"noTranslate\" data-no-translation=\"\"><span class=\"noTranslate\" data-no-translation=\"\"><span class=\"noTranslate\" data-no-translation=\"\">DeepMind<\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span> a r\u00e9cemment annonc\u00e9 <\/span><a href=\"https:\/\/blog.google\/technology\/ai\/google-deepmind-isomorphic-alphafold-3-ai-model\/\" target=\"_blank\" rel=\"noopener\"><span style=\"font-weight: 400;\">AlphaFold 3<\/span><\/a><span style=\"font-weight: 400;\">qui pr\u00e9sente une version am\u00e9lior\u00e9e du module Evoformer, qui fait partie de l'architecture d'apprentissage en profondeur sur laquelle repose AlphaFold 2. <\/span><\/p>\n<p><span style=\"font-weight: 400;\">Une fois que le module Evoformer a trait\u00e9 les mol\u00e9cules d'entr\u00e9e, AlphaFold 3 utilise un nouveau r\u00e9seau de diffusion pour assembler les structures pr\u00e9dites.\u00a0<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Ce r\u00e9seau est similaire \u00e0 ceux utilis\u00e9s dans les g\u00e9n\u00e9rateurs d'images d'IA tels que <span class=\"noTranslate\" data-no-translation=\"\"><span class=\"noTranslate\" data-no-translation=\"\"><span class=\"noTranslate\" data-no-translation=\"\"><span class=\"noTranslate\" data-no-translation=\"\"><span class=\"noTranslate\" data-no-translation=\"\"><span class=\"noTranslate\" data-no-translation=\"\"><span class=\"noTranslate\" data-no-translation=\"\"><span class=\"noTranslate\" data-no-translation=\"\"><span class=\"noTranslate\" data-no-translation=\"\"><span class=\"noTranslate\" data-no-translation=\"\"><span class=\"noTranslate\" data-no-translation=\"\"><span class=\"noTranslate\" data-no-translation=\"\">DALL-E<\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span>. Il part d'un \"nuage\" d'atomes et affine la structure de mani\u00e8re it\u00e9rative au cours d'une s\u00e9rie d'\u00e9tapes jusqu'\u00e0 ce qu'il converge vers une configuration mol\u00e9culaire finale, probablement pr\u00e9cise. <\/span><\/p>\n<p><span style=\"font-weight: 400;\">Le mod\u00e8le AlphaFold 3 a \u00e9volu\u00e9 au-del\u00e0 des seules prot\u00e9ines - il capture \u00e9galement les interactions de l'ADN, de l'ARN et des ligands. Un ligand est une mol\u00e9cule qui se lie \u00e0 une autre mol\u00e9cule, g\u00e9n\u00e9ralement une prot\u00e9ine, pour former un complexe et d\u00e9clenche souvent une r\u00e9ponse biologique ou un changement dans la fonction de la prot\u00e9ine.<\/span><\/p>\n<p><a href=\"https:\/\/www.isomorphiclabs.com\/\" target=\"_blank\" rel=\"noopener\"><span style=\"font-weight: 400;\">Isomorphic Labs<\/span><\/a><span style=\"font-weight: 400;\">qui a collabor\u00e9 avec <span class=\"noTranslate\" data-no-translation=\"\"><span class=\"noTranslate\" data-no-translation=\"\"><span class=\"noTranslate\" data-no-translation=\"\"><span class=\"noTranslate\" data-no-translation=\"\"><span class=\"noTranslate\" data-no-translation=\"\"><span class=\"noTranslate\" data-no-translation=\"\"><span class=\"noTranslate\" data-no-translation=\"\"><span class=\"noTranslate\" data-no-translation=\"\"><span class=\"noTranslate\" data-no-translation=\"\"><span class=\"noTranslate\" data-no-translation=\"\"><span class=\"noTranslate\" data-no-translation=\"\"><span class=\"noTranslate\" data-no-translation=\"\">DeepMind<\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span> sur le projet AlphaFold 3, travaille d\u00e9j\u00e0 avec des entreprises pharmaceutiques, appliquant le mod\u00e8le \u00e0 des d\u00e9fis r\u00e9els de conception de m\u00e9dicaments.\u00a0<\/span><\/p>\n<p><span style=\"font-weight: 400;\"><span class=\"noTranslate\" data-no-translation=\"\"><span class=\"noTranslate\" data-no-translation=\"\"><span class=\"noTranslate\" data-no-translation=\"\"><span class=\"noTranslate\" data-no-translation=\"\"><span class=\"noTranslate\" data-no-translation=\"\"><span class=\"noTranslate\" data-no-translation=\"\"><span class=\"noTranslate\" data-no-translation=\"\"><span class=\"noTranslate\" data-no-translation=\"\"><span class=\"noTranslate\" data-no-translation=\"\"><span class=\"noTranslate\" data-no-translation=\"\"><span class=\"noTranslate\" data-no-translation=\"\"><span class=\"noTranslate\" data-no-translation=\"\">DeepMind<\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span> a \u00e9galement lanc\u00e9 l'initiative <\/span><a href=\"https:\/\/alphafoldserver.com\/\" target=\"_blank\" rel=\"noopener\"><span style=\"font-weight: 400;\">Serveur AlphaFold<\/span><\/a><span style=\"font-weight: 400;\">AlphaFold 3 est une plateforme gratuite et conviviale qui permet aux chercheurs d'exploiter la puissance d'AlphaFold 3 sans disposer de ressources informatiques importantes ou d'une expertise en apprentissage automatique.\u00a0<\/span><\/p>\n<h2>Un bref historique du projet AlphaFold<\/h2>\n<p><span style=\"font-weight: 400;\">Avant l'apprentissage automatique, le calcul du nombre de configurations que pouvait prendre une prot\u00e9ine prenait un temps astronomique.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Le projet AlphaFold a d\u00e9but\u00e9 en 2016 et s'est achev\u00e9 en 2018, peu apr\u00e8s la victoire historique d'AlphaGo contre Lee Sedol, un grand joueur international de Go.\u00a0<\/span><\/p>\n<p><span style=\"font-weight: 400;\">En 2018, <span class=\"noTranslate\" data-no-translation=\"\"><span class=\"noTranslate\" data-no-translation=\"\"><span class=\"noTranslate\" data-no-translation=\"\"><span class=\"noTranslate\" data-no-translation=\"\"><span class=\"noTranslate\" data-no-translation=\"\"><span class=\"noTranslate\" data-no-translation=\"\"><span class=\"noTranslate\" data-no-translation=\"\"><span class=\"noTranslate\" data-no-translation=\"\"><span class=\"noTranslate\" data-no-translation=\"\"><span class=\"noTranslate\" data-no-translation=\"\"><span class=\"noTranslate\" data-no-translation=\"\"><span class=\"noTranslate\" data-no-translation=\"\">DeepMind<\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span> a pr\u00e9sent\u00e9 AlphaFold 1, la premi\u00e8re version du syst\u00e8me d'intelligence artificielle, lors de la conf\u00e9rence de l'Union europ\u00e9enne. <\/span><a href=\"https:\/\/predictioncenter.org\/casp13\/\" target=\"_blank\" rel=\"noopener\"><span style=\"font-weight: 400;\">CASP13<\/span><\/a><span style=\"font-weight: 400;\"> (\u00c9valuation critique de la pr\u00e9diction de la structure des prot\u00e9ines).\u00a0<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Ce concours bisannuel rassemble des groupes de recherche du monde entier qui testent la pr\u00e9cision de leurs pr\u00e9dictions de structures prot\u00e9iques par rapport \u00e0 des donn\u00e9es exp\u00e9rimentales r\u00e9elles.\u00a0<\/span><\/p>\n<p><span style=\"font-weight: 400;\">AlphaFold 1 s'est class\u00e9 premier dans la comp\u00e9tition, ce qui constitue une \u00e9tape importante dans le domaine de la biologie informatique.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Deux ans plus tard, lors de la 14e \u00e9dition du CASP en 2020, <span class=\"noTranslate\" data-no-translation=\"\"><span class=\"noTranslate\" data-no-translation=\"\"><span class=\"noTranslate\" data-no-translation=\"\"><span class=\"noTranslate\" data-no-translation=\"\"><span class=\"noTranslate\" data-no-translation=\"\"><span class=\"noTranslate\" data-no-translation=\"\"><span class=\"noTranslate\" data-no-translation=\"\"><span class=\"noTranslate\" data-no-translation=\"\"><span class=\"noTranslate\" data-no-translation=\"\"><span class=\"noTranslate\" data-no-translation=\"\"><span class=\"noTranslate\" data-no-translation=\"\"><span class=\"noTranslate\" data-no-translation=\"\">DeepMind<\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span> a pr\u00e9sent\u00e9 AlphaFold 2, d\u00e9montrant une pr\u00e9cision si \u00e9lev\u00e9e que la communaut\u00e9 scientifique a consid\u00e9r\u00e9 que le probl\u00e8me du repliement des prot\u00e9ines \u00e9tait essentiellement r\u00e9solu.\u00a0<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Les performances d'AlphaFold 2 ont \u00e9t\u00e9 remarquables. Il a obtenu une pr\u00e9cision m\u00e9diane de 92,4 GDT (Global Distance Test) sur l'ensemble des cibles.\u00a0<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Pour mettre cela en perspective, un score de 90 GDT est consid\u00e9r\u00e9 comme comp\u00e9titif par rapport aux r\u00e9sultats obtenus par des m\u00e9thodes exp\u00e9rimentales. L'article sur les m\u00e9thodes AlphaFold 2 a depuis re\u00e7u plus de 20 000 citations, ce qui le place parmi les 500 articles les plus cit\u00e9s dans tous les domaines scientifiques.<\/span><span style=\"font-weight: 400;\">\u00a0<\/span><\/p>\n<p>AlphaFold a jou\u00e9 un r\u00f4le d\u00e9terminant dans de nombreux projets de recherche novateurs, tels que l'\u00e9tude des prot\u00e9ines susceptibles de d\u00e9grader les polluants environnementaux, comme les plastiques, et l'am\u00e9lioration de notre compr\u00e9hension de maladies tropicales peu courantes comme la leishmaniose et la maladie de Chagas.<\/p>\n<p><iframe loading=\"lazy\" title=\"AlphaFold : La r\u00e9alisation d&#039;une perc\u00e9e scientifique\" width=\"1080\" height=\"608\" src=\"https:\/\/www.youtube.com\/embed\/gg7WjuFs8F4?feature=oembed\" frameborder=\"0\" allow=\"accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture; web-share\" referrerpolicy=\"strict-origin-when-cross-origin\" allowfullscreen><\/iframe><\/p>\n<p><span style=\"font-weight: 400;\">En juillet 2021, <span class=\"noTranslate\" data-no-translation=\"\"><span class=\"noTranslate\" data-no-translation=\"\"><span class=\"noTranslate\" data-no-translation=\"\"><span class=\"noTranslate\" data-no-translation=\"\"><span class=\"noTranslate\" data-no-translation=\"\"><span class=\"noTranslate\" data-no-translation=\"\"><span class=\"noTranslate\" data-no-translation=\"\"><span class=\"noTranslate\" data-no-translation=\"\"><span class=\"noTranslate\" data-no-translation=\"\"><span class=\"noTranslate\" data-no-translation=\"\"><span class=\"noTranslate\" data-no-translation=\"\"><span class=\"noTranslate\" data-no-translation=\"\">DeepMind<\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span>en partenariat avec l'Institut europ\u00e9en de bioinformatique de l'EMBL (EMBL-EBI), a publi\u00e9 la base de donn\u00e9es AlphaFold sur la structure des prot\u00e9ines, qui donne acc\u00e8s \u00e0 plus de 350 000 pr\u00e9dictions sur la structure des prot\u00e9ines, y compris le prot\u00e9ome humain complet.\u00a0<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Cette base de donn\u00e9es a depuis \u00e9t\u00e9 \u00e9tendue \u00e0 plus de 200 millions de structures, couvrant la quasi-totalit\u00e9 des prot\u00e9ines catalogu\u00e9es connues de la science.\u00a0<\/span><\/p>\n<p><span style=\"font-weight: 400;\">\u00c0 ce jour, la base de donn\u00e9es AlphaFold sur la structure des prot\u00e9ines a \u00e9t\u00e9 consult\u00e9e par plus d'un million d'utilisateurs dans plus de 190 pays, ce qui a permis des d\u00e9couvertes dans des domaines allant de la m\u00e9decine \u00e0 l'agriculture et au-del\u00e0.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">AlphaFold 3 est une nouvelle it\u00e9ration de ce syst\u00e8me de d\u00e9couverte et d'analyse des prot\u00e9ines, le meilleur de sa cat\u00e9gorie.\u00a0<\/span><\/p>","protected":false},"excerpt":{"rendered":"<p>DeepMind a annonc\u00e9 AlphaFold 3, la derni\u00e8re it\u00e9ration de son projet de pliage des prot\u00e9ines. AlphaFold 3, comme ses pr\u00e9d\u00e9cesseurs, pr\u00e9dit principalement la mani\u00e8re dont les prot\u00e9ines se plient en fonction de leurs s\u00e9quences d'acides amin\u00e9s. Les prot\u00e9ines, \u00e9l\u00e9ments constitutifs de toute vie organique, sont constitu\u00e9es de longues cha\u00eenes d'acides amin\u00e9s qui se plient comme un origami pour former des structures en 3D qui d\u00e9terminent leurs fonctions.  Comprendre comment ces structures se plient ouvre la voie au d\u00e9cryptage des m\u00e9canismes mol\u00e9culaires qui sous-tendent la sant\u00e9 et la maladie. Par exemple, dans certains cas, les prot\u00e9ines peuvent \u00eatre mal repli\u00e9es, ce qui perturbe leur fonction normale et contribue au d\u00e9veloppement de maladies telles que les maladies d'Alzheimer et de Parkinson. Le mauvais pliage peut interf\u00e9rer<\/p>","protected":false},"author":2,"featured_media":12119,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[84],"tags":[604,147],"class_list":["post-12117","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-industry","tag-alphafold","tag-deepmind"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.4 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>AlphaFold 3: DeepMind evolves its AI protein folding project | 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\/fr\/2024\/05\/alphafold-3-deepmind-evolves-its-ai-protein-folding-project\/\" \/>\n<meta property=\"og:locale\" content=\"fr_FR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"AlphaFold 3: DeepMind evolves its AI protein folding project | DailyAI\" \/>\n<meta property=\"og:description\" content=\"DeepMind announced AlphaFold 3, the latest iteration of its protein folding project. AlphaFold 3, like its predecessors, primarily predicts how proteins fold based on their amino acid sequences. Proteins, the building blocks of all organic life, comprise long chains of amino acids that fold like &#8216;origami&#8217; into 3D structures that determine their functions.\u00a0 Understanding how these structures fold opens the door to deciphering the molecular mechanisms that underpin health and disease. For example, in some cases, proteins can become misfolded, which disrupts their normal function and contributes to the development of diseases such as Alzheimer&#8217;s and Parkinson&#8217;s. 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