{"id":50899,"date":"2024-09-10T13:44:31","date_gmt":"2024-09-10T11:44:31","guid":{"rendered":"https:\/\/www.ub.edu\/in2ub\/?p=50899"},"modified":"2024-09-10T13:45:30","modified_gmt":"2024-09-10T11:45:30","slug":"es-descriu-una-nova-bioquimica-per-a-larn-a-baixes-temperatures","status":"publish","type":"post","link":"https:\/\/www.ub.edu\/in2ub\/ca\/es-descriu-una-nova-bioquimica-per-a-larn-a-baixes-temperatures\/","title":{"rendered":"Es descriu una nova bioqu\u00edmica per a l\u2019ARN a baixes temperatures"},"content":{"rendered":"<p>Un equip de la UB descriu una nova bioqu\u00edmica per a l\u2019ARN a baixes temperatures. En quest treball s&#8217;utilitza el desplegament mec\u00e0nic de l\u2019ARN per entendre precisament les formes diverses que adopta l\u2019ARN en plegar-se sobre si mateix. L&#8217;estudi, liderat pel Prof.\u00a0 F\u00e8lix Ritort, <a href=\"https:\/\/www.ub.edu\/in2ub\/grup-de-recerca\/biomolecule-and-small-system-physics\/\" target=\"_blank\" rel=\"noopener\">The Small Biosystems Lab<\/a> i publicat a la<br \/>\na la revista Proceedings of the National Academy of Sciences (PNAS) descriu per primer cop com el proc\u00e9s de plegament de l\u2019ARN a baixes temperatures pot obrir una perspectiva innovadora sobre la bioqu\u00edmica primordial i l\u2019evoluci\u00f3 de la vida al planeta. Tal i com el Prof. F\u00e8lix Ritort ens detalla: \u00ables estructures plegades de les mol\u00e8cules biol\u00f2giques, de l\u2019ADN a l\u2019ARN i les prote\u00efnes, determinen la seva acci\u00f3 biol\u00f2gica. Sense estructura no hi ha funci\u00f3, i sense funci\u00f3 no hi ha vida\u00bb.<\/p>\n<p>Rissone, P.; Severino, A.; Pastor, I.; Ritort, F. \u00abUniversal cold RNA phase transitions\u00bb.\u00a0<em>Proceedings of the National Academy of Sciences\u00a0<\/em>(PNAS), August 2024. DOI:\u00a0<a href=\"https:\/\/doi.org\/10.1073\/pnas.2408313121\" target=\"_blank\" rel=\"noopener\">10.1073\/pnas.240831312<\/a><\/p>\n<p><strong>Llegiu m\u00e9s- Font: <a href=\"https:\/\/web.ub.edu\/web\/actualitat\/w\/nova-bioquimica-arn\" target=\"_blank\" rel=\"noopener\">Not\u00edcies UB<\/a><\/strong><\/p>\n<p>Imatge: La imatge mostra una representaci\u00f3 art\u00edstica de la depend\u00e8ncia de la temperatura del paisatge d\u2019energia lliure (FEL) del plegament de l&#8217;ARN. Els autors van demostrar que els ARN experimenten una transici\u00f3 de fase en fred i es pleguen malament perqu\u00e8 el FEL canvia amb la temperatura. Quan baixa la temperatura, el paisatge des\u00e8rtic en qu\u00e8 el sistema troba el m\u00ednim d\u2019energia per plegar-se a la forquilla nativa dona pas a congostos separats per barreres. El sistema queda atrapat en aquests m\u00ednims locals que donen lloc a diverses conformacions mal plegades. Imatge: Paolo Rissone<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Un equip de la UB descriu una nova bioqu\u00edmica per a l\u2019ARN a baixes temperatures. En quest treball s&#8217;utilitza el desplegament mec\u00e0nic de l\u2019ARN per entendre precisament les formes diverses que adopta l\u2019ARN en plegar-se sobre si mateix. L&#8217;estudi, liderat pel Prof.\u00a0 F\u00e8lix Ritort, The Small Biosystems Lab i publicat a la a la revista&#8230;<\/p>\n","protected":false},"author":2,"featured_media":50900,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[18],"tags":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v23.5 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Es descriu una nova bioqu\u00edmica per a l\u2019ARN a baixes temperatures - IN\u00b2UB<\/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:\/\/www.ub.edu\/in2ub\/ca\/es-descriu-una-nova-bioquimica-per-a-larn-a-baixes-temperatures\/\" \/>\n<meta property=\"og:locale\" content=\"ca_ES\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Es descriu una nova bioqu\u00edmica per a l\u2019ARN a baixes temperatures - IN\u00b2UB\" \/>\n<meta property=\"og:description\" content=\"Un equip de la UB descriu una nova bioqu\u00edmica per a l\u2019ARN a baixes temperatures. 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