
{"id":8389,"date":"2014-08-18T13:59:46","date_gmt":"2014-08-18T13:59:46","guid":{"rendered":"http:\/\/ibecbarcelona.eu\/new\/investigadors-mesuren-per-primera-vegada-una-propietat-del-adn\/"},"modified":"2015-08-24T14:02:32","modified_gmt":"2015-08-24T14:02:32","slug":"investigadors-mesuren-per-primera-vegada-una-propietat-del-adn","status":"publish","type":"post","link":"https:\/\/ibecbarcelona.eu\/ca\/investigadors-mesuren-per-primera-vegada-una-propietat-del-adn\/","title":{"rendered":"Investigadors mesuren per primera vegada una propietat del ADN"},"content":{"rendered":"<p>Els investigadors ho han aconseguit gr\u00e0cies a l\u2019\u00fas de la seva pr\u00f2pia t\u00e8cnica, desenvolupada recentment al IBEC, basada en el microscopi de for\u00e7a electrost\u00e0tica (EFM de l\u2019angl\u00e8s electrost\u00e0tic force microscopy). Aquesta mena de microscopi permet als investigadors explorar no nom\u00e9s la morfologia dels complexes biol\u00f2gics individuals en els eu entorn natural, sin\u00f3 tamb\u00e9 per a mesurar les propietats electrost\u00e0tiques que fan que cada objecte sigui \u00fanic. No obstant aix\u00f2, fins ara aquesta propietat clau del ADN \u2013 la seva capacitat de polaritzaci\u00f3 el\u00e8ctrica \u2013 ha perm\u00e8s desconeguda, degut a les dificultats inherents per aconseguir aquesta mesura donada la complexa estructura del ADN.<\/p>\n<p>Els investigadors han estat capa\u00e7os de quantificar la constant diel\u00e8ctrica del ADN d\u2019una manera no invasiva mitjan\u00e7ant la mesura del ADN en el seu estat, condensat, dins d\u2019un bacteri\u00f2fag \u2013 un virus que infecta i es replica dins d\u2019una bact\u00e8ria. La naturalesa especial d\u2019aquests virus significa que porten informaci\u00f3 gen\u00e8tica condensada en una petita carcassa, el que significa que mantenen l\u2019ADN en una estructura quasi cristal\u00b7lina que els investigadors han estat capa\u00e7os de disseccionar per determinar les constants diel\u00e8ctriques dels principals components; la coberta de prote\u00efna i l\u2019ADN.<\/p>\n<p>Els resultats mostren que la constant diel\u00e8ctrica del ADN est\u00e0 al voltant de 8, molt per sobre del que es sol suposar, i els investigadors confirmen aquest valor basant-se en c\u00e0lculs te\u00f2rics molt acurats, que han obtingut utilitzant eines computacionals atom\u00edstiques d\u2019\u00faltima generaci\u00f3 i els recursos computacionals del Barcelona Supercomputing Center \u2013 Centro Nacional de Supercomputaci\u00f3n. Els c\u00e0lculs van donar com a resultat pr\u00e0cticament el mateix valor, al voltant de 8, que coincideix amb les seves observacions experimentals.<\/p>\n<p>\u201cEls nostres experiments i els c\u00e0lculs revelen una propietat pr\u00f2pia del ADN que permet la predicci\u00f3 realista de la seva conformaci\u00f3 i de les seves funcions sobre la base d\u2019eines computacionals que ens ajuden a comprendre millor les funcions essencials que l\u2019ADN exerceix en el nostre cos\u201d, diu Modesto Orozco, cap del Programa Conjunt d\u2019Investigaci\u00f3 en Biologia Computacional Institut de Recerca Biom\u00e8dica -Barcelona Supercomputing Center i professor de la UB. \u201cAquests experiments tamb\u00e9 obren noves vies per explorar propietats de polaritzaci\u00f3 fonamentals d\u2019altres biomol\u00e8cules.\u201d<\/p>\n<p>&#8212;<strong><br \/>\n<\/strong><\/p>\n<p><strong>Article de refer\u00e8ncia: <\/strong>Ana Cuervo, Pablo D. Dans, Jose L. Carrascosa, Modesto Orozco, Gabriel Gomila and Laura Fumagalli (2014). <a href=\"http:\/\/www.pnas.org\/content\/early\/2014\/08\/14\/1405702111.abstract\" target=\"_blank\">Direct measurement of the dielectric polarization properties of DNA<\/a>. <em>PNAS<\/em>, 111(35):E3624-30<\/p>\n<p>&nbsp;<\/p>\n","protected":false},"excerpt":{"rendered":"<h3><img decoding=\"async\" class=\"left size-full wp-image-8385 lazyload\" data-src=\"https:\/\/ibecbarcelona.eu\/wp-content\/uploads\/2014\/08\/fumagalli_image.jpg\" border=\"0\" width=\"340\" height=\"210\" data-srcset=\"https:\/\/ibecbarcelona.eu\/wp-content\/uploads\/2014\/08\/fumagalli_image.jpg 340w, https:\/\/ibecbarcelona.eu\/wp-content\/uploads\/2014\/08\/fumagalli_image-300x185.jpg 300w, https:\/\/ibecbarcelona.eu\/wp-content\/uploads\/2014\/08\/fumagalli_image-242x150.jpg 242w, https:\/\/ibecbarcelona.eu\/wp-content\/uploads\/2014\/08\/fumagalli_image-150x92.jpg 150w\" data-sizes=\"(max-width: 340px) 100vw, 340px\" src=\"data:image\/svg+xml;base64,PHN2ZyB3aWR0aD0iMSIgaGVpZ2h0PSIxIiB4bWxucz0iaHR0cDovL3d3dy53My5vcmcvMjAwMC9zdmciPjwvc3ZnPg==\" style=\"--smush-placeholder-width: 340px; --smush-placeholder-aspect-ratio: 340\/210;\" \/>La capacitat de polaritzaci\u00f3 el\u00e8ctrica del ADN \u00e9s una propietat fonamental que influeix directament en les seves funcions biol\u00f2giques. Malgrat la import\u00e0ncia d\u2019aquesta propietat no ha estat possible mesurar-la fins ara.<\/h3>\n<p>En un estudi publicat avui a PNAS els investigadors de l\u2019Institut de Bioenginyeria de Catalunya (IBEC) dirigits per Laura Fumagalli, investigadora s\u00e8nior al IBEC i professora de la Universitat de Barcelona (UB), i els seus col\u00b7laboradors del Institut de Recerca Biom\u00e8dica (IRB), del Barcelona Supercomputing Center \u2013 Centro Nacional de Supercomputaci\u00f3n, (BSC-CNS) del Centre Nacional de Biotecnologia (CNB-CSIC) i del Institut IMDEA de Nanoci\u00e8ncia a Madrid, descriuen com han trobat una manera per mesurar directament la capacitat de polaritzaci\u00f3 el\u00e8ctrica del ADN \u2013 representada per la seva constant diel\u00e8ctrica que indica com reacciona un material a l\u2019aplicaci\u00f3 d\u2019un camp el\u00e8ctric \u2013 per primera vegada en la hist\u00f2ria.<\/p>\n","protected":false},"author":4,"featured_media":8385,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[96],"tags":[],"post_formats":[],"class_list":["post-8389","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-noticies-de-recerca"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.4 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Investigadors mesuren per primera vegada una propietat del ADN - Institute for Bioengineering of Catalonia<\/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:\/\/ibecbarcelona.eu\/ca\/investigadors-mesuren-per-primera-vegada-una-propietat-del-adn\/\" \/>\n<meta property=\"og:locale\" content=\"ca_ES\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Investigadors mesuren per primera vegada una propietat del ADN - Institute for Bioengineering of Catalonia\" \/>\n<meta property=\"og:description\" content=\"La capacitat de polaritzaci\u00f3 el\u00e8ctrica del ADN \u00e9s una propietat fonamental que influeix directament en les seves funcions biol\u00f2giques. Malgrat la import\u00e0ncia d\u2019aquesta propietat no ha estat possible mesurar-la fins ara.  En un estudi publicat avui a PNAS els investigadors de l\u2019Institut de Bioenginyeria de Catalunya (IBEC) dirigits per Laura Fumagalli, investigadora s\u00e8nior al IBEC i professora de la Universitat de Barcelona (UB), i els seus col\u00b7laboradors del Institut de Recerca Biom\u00e8dica (IRB), del Barcelona Supercomputing Center \u2013 Centro Nacional de Supercomputaci\u00f3n, (BSC-CNS) del Centre Nacional de Biotecnologia (CNB-CSIC) i del Institut IMDEA de Nanoci\u00e8ncia a Madrid, descriuen com han trobat una manera per mesurar directament la capacitat de polaritzaci\u00f3 el\u00e8ctrica del ADN \u2013 representada per la seva constant diel\u00e8ctrica que indica com reacciona un material a l\u2019aplicaci\u00f3 d\u2019un camp el\u00e8ctric \u2013 per primera vegada en la hist\u00f2ria.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/ibecbarcelona.eu\/ca\/investigadors-mesuren-per-primera-vegada-una-propietat-del-adn\/\" \/>\n<meta property=\"og:site_name\" content=\"Institute for Bioengineering of Catalonia\" \/>\n<meta property=\"article:published_time\" content=\"2014-08-18T13:59:46+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2015-08-24T14:02:32+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/ibecbarcelona.eu\/wp-content\/uploads\/2014\/08\/fumagalli_image.jpg\" \/>\n\t<meta property=\"og:image:width\" content=\"340\" \/>\n\t<meta property=\"og:image:height\" content=\"210\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/jpeg\" \/>\n<meta name=\"author\" content=\"\u00c0ngels L\u00f3pez\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"Escrit per\" \/>\n\t<meta name=\"twitter:data1\" content=\"\u00c0ngels L\u00f3pez\" \/>\n\t<meta name=\"twitter:label2\" content=\"Temps estimat de lectura\" \/>\n\t<meta name=\"twitter:data2\" content=\"2 minuts\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\\\/\\\/schema.org\",\"@graph\":[{\"@type\":\"Article\",\"@id\":\"https:\\\/\\\/ibecbarcelona.eu\\\/ca\\\/investigadors-mesuren-per-primera-vegada-una-propietat-del-adn\\\/#article\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/ibecbarcelona.eu\\\/ca\\\/investigadors-mesuren-per-primera-vegada-una-propietat-del-adn\\\/\"},\"author\":{\"name\":\"\u00c0ngels L\u00f3pez\",\"@id\":\"https:\\\/\\\/ibecbarcelona.eu\\\/#\\\/schema\\\/person\\\/c212c6b589546130be67986b9290e2b8\"},\"headline\":\"Investigadors mesuren per primera vegada una propietat del ADN\",\"datePublished\":\"2014-08-18T13:59:46+00:00\",\"dateModified\":\"2015-08-24T14:02:32+00:00\",\"mainEntityOfPage\":{\"@id\":\"https:\\\/\\\/ibecbarcelona.eu\\\/ca\\\/investigadors-mesuren-per-primera-vegada-una-propietat-del-adn\\\/\"},\"wordCount\":434,\"publisher\":{\"@id\":\"https:\\\/\\\/ibecbarcelona.eu\\\/#organization\"},\"image\":{\"@id\":\"https:\\\/\\\/ibecbarcelona.eu\\\/ca\\\/investigadors-mesuren-per-primera-vegada-una-propietat-del-adn\\\/#primaryimage\"},\"thumbnailUrl\":\"https:\\\/\\\/ibecbarcelona.eu\\\/wp-content\\\/uploads\\\/2014\\\/08\\\/fumagalli_image.jpg\",\"articleSection\":[\"Not\u00edcies de recerca\"],\"inLanguage\":\"ca\"},{\"@type\":\"WebPage\",\"@id\":\"https:\\\/\\\/ibecbarcelona.eu\\\/ca\\\/investigadors-mesuren-per-primera-vegada-una-propietat-del-adn\\\/\",\"url\":\"https:\\\/\\\/ibecbarcelona.eu\\\/ca\\\/investigadors-mesuren-per-primera-vegada-una-propietat-del-adn\\\/\",\"name\":\"Investigadors mesuren per primera vegada una propietat del ADN - 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