{"id":41742,"date":"1999-01-01T00:00:00","date_gmt":"1999-01-01T00:00:00","guid":{"rendered":"https:\/\/www.deberes.net\/tesis\/sin-categoria\/mecanismos-moleculares-que-median-la-actividad-de-la-proteina-fur-como-represor-de-la-transcripcion-en-escherichia-coli\/"},"modified":"1999-01-01T00:00:00","modified_gmt":"1999-01-01T00:00:00","slug":"mecanismos-moleculares-que-median-la-actividad-de-la-proteina-fur-como-represor-de-la-transcripcion-en-escherichia-coli","status":"publish","type":"post","link":"https:\/\/www.deberes.net\/tesis\/quimica\/mecanismos-moleculares-que-median-la-actividad-de-la-proteina-fur-como-represor-de-la-transcripcion-en-escherichia-coli\/","title":{"rendered":"Mecanismos moleculares que median la actividad de la proteina fur como represor de la transcripcion en escherichia coli."},"content":{"rendered":"<h2>Tesis doctoral de <strong> Lucia Escolar Blasco <\/strong><\/h2>\n<p>Se ha caracterizado el mecanismo de represi\u00f3n empleado por la prote\u00edna fur para inhibir el inicio de transcripci\u00f3n en regiones promotoras reguladas por hierro. El represor y la arn polimerasa compiten por la uni\u00f3n a secuencias solapantes en la zona promotora. ambas prote\u00ednas son sustituidas una por otra en los promotores regulados, de acuerdo \u00fanicamente con la concentraci\u00f3n de hierro.  la interacci\u00f3n de fur con el adn ha sido tambi\u00e9n estudiada. La prote\u00edna reconoce sus secuencias de uni\u00f3n sobre el adn como repeticiones de 6 pb gataat y no como secuencia pal indr\u00f3nicas. La repetici\u00f3n de esa secuencia genera sitios fur extendidos con mayores afinidades por la prote\u00edna como resultado de una ocupaci\u00f3n cooperativa del conjunto de repeticiones. se ha determinado que un m\u00ednimo de tres repeticiones son necesarias para una uni\u00f3n estable de fur al adn in vitro, aunque la disposici\u00f3n necesaria in vivo son dos repeticiones directas y una tercera inversa. Esta reinterpretaci\u00f3n de la caja fur ha permitido dar una explicaci\u00f3n coherente a los datos publicados..<\/p>\n<p>&nbsp;<\/p>\n<h3>Datos acad\u00e9micos de la tesis doctoral \u00ab<strong>Mecanismos moleculares que median la actividad de la proteina fur como represor de la transcripcion en escherichia coli.<\/strong>\u00ab<\/h3>\n<ul>\n<li><strong>T\u00edtulo de la tesis:<\/strong>\u00a0 Mecanismos moleculares que median la actividad de la proteina fur como represor de la transcripcion en escherichia coli. <\/li>\n<li><strong>Autor:<\/strong>\u00a0 Lucia Escolar Blasco <\/li>\n<li><strong>Universidad:<\/strong>\u00a0 Aut\u00f3noma de Madrid<\/li>\n<li><strong>Fecha de lectura de la tesis:<\/strong>\u00a0 01\/01\/1999<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n<h3>Direcci\u00f3n y tribunal<\/h3>\n<ul>\n<li><strong>Director de la tesis<\/strong>\n<ul>\n<li>Victor De Lorenzo Prieto<\/li>\n<\/ul>\n<\/li>\n<li><strong>Tribunal<\/strong>\n<ul>\n<li>Presidente del tribunal: margarita Salas salgueras <\/li>\n<li>jordi Barb\u00e9 Garc\u00eda (vocal)<\/li>\n<li>josep Casadesus pursals (vocal)<\/li>\n<li>Francisco Murillo  araujo (vocal)<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Tesis doctoral de Lucia Escolar Blasco Se ha caracterizado el mecanismo de represi\u00f3n empleado por la prote\u00edna fur para inhibir [&hellip;]<\/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 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