{"id":141713,"date":"2026-01-12T18:04:37","date_gmt":"2026-01-12T18:04:37","guid":{"rendered":"https:\/\/www.deberes.net\/tesis\/sin-categoria\/influencia-de-factores-ambientales-sobre-la-estructura-del-adn-y-la-expresion-genica-en-el-genero-haloferax\/"},"modified":"2026-01-12T18:04:37","modified_gmt":"2026-01-12T18:04:37","slug":"influencia-de-factores-ambientales-sobre-la-estructura-del-adn-y-la-expresion-genica-en-el-genero-haloferax","status":"publish","type":"post","link":"https:\/\/www.deberes.net\/tesis\/quimica\/influencia-de-factores-ambientales-sobre-la-estructura-del-adn-y-la-expresion-genica-en-el-genero-haloferax\/","title":{"rendered":"Influencia de factores ambientales sobre la estructura del adn y la expresion genica en el genero haloferax"},"content":{"rendered":"<h2>Tesis doctoral de <strong> Francisco Juan Martinez Mojica <\/strong><\/h2>\n<p>En este trabajo de tesis doctoral se realizan las primeras aportaciones sobre secuencias que se expresan diferencialmente en funcion de la salinidad en halobacterias. Por un lado, el gen de las vacuolas de gas de haloferax mediterranei aumenta sus niveles de transcripcion al aumentar la salinidad del medio. Ademas se describen tres secuencias mas cuya expresion esta modulada por la sal. Dos de ellas presentan los maximos niveles de expresion a salinidades extremas, y las posibles proteinas codificadas parecen estar relacionadas con proteinas reguladoras. Estos orfs de expresion diferencial se encuentran localizados en regiones donde se han detectado secuencias intergenicas que pueden dar lugar a estructuras de adn no-b, tales como adn-z y cruciformes, cuya estabilidad podria estar influenciada por la salinidad del medio. Alternancias purina-pirimidina, sugerentes de adn-z se encuentran en lugares donde inicialmente se habian observado modificaciones genomicas sal-dependientes, posiblemente implicadas en la estabilizacion de estas estructuras de adn. Nuestros datos indicarian un posible papel de la estructura del adn a nivel local en la regulacion genica como respuesta a cambios en condiciones ambientales. Se han descrito ademas variaciones en la topolog\u00eda de plasmidos de halobacterias que difieren al comportamiento en eubacterias.<\/p>\n<p>&nbsp;<\/p>\n<h3>Datos acad\u00e9micos de la tesis doctoral \u00ab<strong>Influencia de factores ambientales sobre la estructura del adn y la expresion genica en el genero haloferax<\/strong>\u00ab<\/h3>\n<ul>\n<li><strong>T\u00edtulo de la tesis:<\/strong>\u00a0 Influencia de factores ambientales sobre la estructura del adn y la expresion genica en el genero haloferax <\/li>\n<li><strong>Autor:<\/strong>\u00a0 Francisco Juan Martinez Mojica <\/li>\n<li><strong>Universidad:<\/strong>\u00a0 Alicante<\/li>\n<li><strong>Fecha de lectura de la tesis:<\/strong>\u00a0 01\/01\/1993<\/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>Francisco Rodriguez Valera<\/li>\n<\/ul>\n<\/li>\n<li><strong>Tribunal<\/strong>\n<ul>\n<li>Presidente del tribunal: Alonso Rodriguez Navarro <\/li>\n<li>Antonio Ventosa Ucero (vocal)<\/li>\n<li>Jos\u00e9 Casadesus Dursals (vocal)<\/li>\n<li>Fernando Molla Rodriguez (vocal)<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Tesis doctoral de Francisco Juan Martinez Mojica En este trabajo de tesis doctoral se realizan las primeras aportaciones sobre secuencias [&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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