{"id":116341,"date":"2018-03-11T10:45:24","date_gmt":"2018-03-11T10:45:24","guid":{"rendered":"https:\/\/www.deberes.net\/tesis\/sin-categoria\/molecular-dynamics-simulations-of-the-epigenetic-machinery\/"},"modified":"2018-03-11T10:45:24","modified_gmt":"2018-03-11T10:45:24","slug":"molecular-dynamics-simulations-of-the-epigenetic-machinery","status":"publish","type":"post","link":"https:\/\/www.deberes.net\/tesis\/quimica-fisica\/molecular-dynamics-simulations-of-the-epigenetic-machinery\/","title":{"rendered":"Molecular dynamics simulations of the epigenetic machinery"},"content":{"rendered":"

Tesis doctoral de Caterina Bianchi — <\/strong><\/h2>\n

Metilaci\u00c2\u00bfn de la citosina del adn en sitios cpg es una marca epigen\u00c2\u00bftica importante delos genomas de mam\u00c2\u00bfferos y regula la expresi\u00c2\u00bfn g\u00c2\u00bfnica y la impronta gen\u00c2\u00bfmica.Tambi\u00c2\u00bfn est\u00c2\u00bf involucrado en la inactivaci\u00c2\u00bfn del cromosoma x y en la carcinog\u00c2\u00bfnesis.Los patrones de los sitios cpg metilados propagan con muy alta fidelidad y elmecanismo para transformar los sitios hemi-metilados a totalmente metilados es muyrobusto. Aunque dnmt1 es la enzima que cataliza la reacci\u00c2\u00bfn de metilaci\u00c2\u00bfn despu\u00c2\u00bfs dela replicaci\u00c2\u00bfn, se encontr\u00c2\u00bf que uhrf1 es la prote\u00c2\u00bfna que realmente reconoce sitioscpg hemi-metilados. Uhrf1 tambi\u00c2\u00bfn puede enlazar con el dominio n-terminal dednmt1 y, por lo tanto, es capaz de jugar un papel en la carga correcta de dnmt1 a lossitios cpg. Sin embargo, no se conoce el mecanismo molecular responsable paradistinguir entre sitios hemi-metilados y no metilados o totalmente metilados por uhrf1.Esta tesis supone una contribuci\u00c2\u00bfn a dicha cuestiones a trav\u00c2\u00bfs simulaciones dedinamica molecular.La primera parte del proyecto de tesis fue para dilucidar el mecanismo f\u00c2\u00bfsico por el cualel dominio sra de uhrf1 es capaz de discriminar entre la uni\u00c2\u00bfn a un adn hemimetiladofrente a la uni\u00c2\u00bfn a un adn no metilado o totalmente metilado, mediante elc\u00c2\u00bflculo de diferencias en las constantes de uni\u00c2\u00bfn a trav\u00c2\u00bfs el concepto de ciclotermodin\u00c2\u00bfmico utilizando el m\u00c2\u00bftodo de integraci\u00c2\u00bfn termodin\u00c2\u00bfmica.En la segunda parte de la tesis, se ha estudiado la propensi\u00c2\u00bfn de \u00c2\u00bfbase flipping\u00c2\u00bf de labase citosina en diferentes estados de metilaci\u00c2\u00bfn en los sitios cpg de un adn.Tambi\u00c2\u00bfn se investig\u00c2\u00bf el proceso de \u00c2\u00bfbase flipping\u00c2\u00bf para la citosina objetivo, mientrasque la citosina metilada en la cadena complementaria est\u00c2\u00bf unida a el dominio sra deuhrf1. El proceso de \u00c2\u00bfbase flipping\u00c2\u00bf se realiz\u00c2\u00bf construyendo un potencial de mediafuerza mediante restricciones a lo largo de las coordenadas seleccionadas.En la \u00c2\u00bfltima parte de la tesis hemos dilucidado el mecanismo fisico de la afinidad deuni\u00c2\u00bfn de mbd1 a di-metilados cpg sitios, mediante el c\u00c2\u00bflculo de diferencias de energ\u00c2\u00bfalibre a trav\u00c2\u00bfs el concepto de ciclo termodin\u00c2\u00bfmico, utilizando la t\u00c2\u00bfcnica de integraci\u00c2\u00bfntermodin\u00c2\u00bfmica. Los resultados obtenidos han cristalizado en 4 art\u00c2\u00bfculos publicados enrevistas de prestigio internacional, am\u00c2\u00bfn de un quinto que ha estado presentado.<\/p>\n

 <\/p>\n

Datos acad\u00e9micos de la tesis doctoral \u00abMolecular dynamics simulations of the epigenetic machinery<\/strong>\u00ab<\/h3>\n
    \n
  • T\u00edtulo de la tesis:<\/strong>\u00a0 Molecular dynamics simulations of the epigenetic machinery <\/li>\n
  • Autor:<\/strong>\u00a0 Caterina Bianchi — <\/li>\n
  • Universidad:<\/strong>\u00a0 Pa\u00eds vasco\/euskal herriko unibertsitatea<\/li>\n
  • Fecha de lectura de la tesis:<\/strong>\u00a0 19\/09\/2014<\/li>\n<\/ul>\n

     <\/p>\n

    Direcci\u00f3n y tribunal<\/h3>\n
      \n
    • Director de la tesis<\/strong>\n
        \n
      • Zangi<\/li>\n<\/ul>\n<\/li>\n
      • Tribunal<\/strong>\n
          \n
        • Presidente del tribunal: Fernando pedro Cossio mora <\/li>\n
        • danilo Roccatano — (vocal)<\/li>\n
        • xavier Daura ribera (vocal)<\/li>\n
        • emanuele Paci — (vocal)<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n

           <\/p>\n","protected":false},"excerpt":{"rendered":"

          Tesis doctoral de Caterina Bianchi — Metilaci\u00c2\u00bfn de la citosina del adn en sitios cpg es una marca epigen\u00c2\u00bftica importante […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"site-sidebar-layout":"default","site-content-layout":"","ast-site-content-layout":"","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","theme-transparent-header-meta":"","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"default","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"var(--ast-global-color-4)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-gradient":""},"tablet":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-gradient":""},"mobile":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-gradient":""}},"ast-content-background-meta":{"desktop":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-gradient":""},"tablet":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-gradient":""},"mobile":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-gradient":""}},"footnotes":""},"categories":[12909,560],"tags":[229713,229715,229716,80095,190193,229714],"class_list":["post-116341","post","type-post","status-publish","format-standard","hentry","category-pais-vasco-euskal-herriko-unibertsitatea","category-quimica-fisica","tag-caterina-bianchi","tag-danilo-roccatano","tag-emanuele-paci","tag-fernando-pedro-cossio-mora","tag-xavier-daura-ribera","tag-zangi"],"_links":{"self":[{"href":"https:\/\/www.deberes.net\/tesis\/wp-json\/wp\/v2\/posts\/116341","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.deberes.net\/tesis\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.deberes.net\/tesis\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.deberes.net\/tesis\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.deberes.net\/tesis\/wp-json\/wp\/v2\/comments?post=116341"}],"version-history":[{"count":0,"href":"https:\/\/www.deberes.net\/tesis\/wp-json\/wp\/v2\/posts\/116341\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.deberes.net\/tesis\/wp-json\/wp\/v2\/media?parent=116341"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.deberes.net\/tesis\/wp-json\/wp\/v2\/categories?post=116341"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.deberes.net\/tesis\/wp-json\/wp\/v2\/tags?post=116341"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}