{"id":68910,"date":"2004-02-07T00:00:00","date_gmt":"2004-02-07T00:00:00","guid":{"rendered":"https:\/\/www.deberes.net\/tesis\/sin-categoria\/analisis-genomico-y-proteomico-de-los-mecanismos-de-captacion-de-hierro-en-aeromonas-mesofilas\/"},"modified":"2004-02-07T00:00:00","modified_gmt":"2004-02-07T00:00:00","slug":"analisis-genomico-y-proteomico-de-los-mecanismos-de-captacion-de-hierro-en-aeromonas-mesofilas","status":"publish","type":"post","link":"https:\/\/www.deberes.net\/tesis\/microbiologia\/analisis-genomico-y-proteomico-de-los-mecanismos-de-captacion-de-hierro-en-aeromonas-mesofilas\/","title":{"rendered":"An\u00e1lisis gen\u00f3mico y prote\u00f3mico de los mecanismos de captaci\u00f3n de hierro en aeromonas mes\u00f3filas"},"content":{"rendered":"<h2>Tesis doctoral de <strong> Cecilia Urgell Urpi <\/strong><\/h2>\n<p>El objetivo central de la presente tesis doctoral fue la caracterizaci\u00f3n de los mecanismos de captaci\u00f3n de hierro de aeromonas mes\u00f3filas, as\u00ed como la determinaci\u00e1on de la contribuci\u00f3n de dichos sistemas a la virulencia.  los bioensayos con las cepas indicadoras a.Hydrophila sb22 (mutante amoa) y e.Coli an346 (mutante enta), nos permitieron identificar de forma presuntiva el sider\u00f3foro secretado por las diferentes cepas de aeromonas spp.; Generalmente amonabactina o enterobactina.  el siguiente paso fue la obtenci\u00f3n de un banco de mutantes por la inserci\u00f3n del elemento de transposici\u00f3n mini: tn5-km en un derivado rifampicina resistente de la cepa a.Hydrophila ah-3. Los  mutantes ah-768 y ah-777 mostraron un aumento notable de los niveles de producci\u00f3n de sider\u00f3foros, una disrupci\u00f3n de la capacidad de crecimiento en presencia de agente quelante y una discapacidad de utilizaci\u00f3n de la amonabactina y de la enterobactina como fuente de hierro. Estas alteraciones fueron relacionadas en el caso del mutante ah-768 con la carencia de una iromp de 70 kda de m.P., Aparente y con un fenotipo atenuado en su virulencia. Los estudios de inmunodetecci\u00f3n empleando antisuero espec\u00edfico contra la prote\u00edna fapa, nos permitieron detectar una iromp en las cepas de aeromonas productoras de amonabactina, y en algunas cepas de aeromonas productoras de un sider\u00f3foro que no es amonabactina ni entrobactina. pero en ning\u00fan caso se observ\u00f3 reacci\u00f3n alguna con las iromp de las cepas de aeromonas productoras de enterobactina.  la determinaci\u00f3n del punto de inserci\u00f3n del transpos\u00f3n en el cromosoma de los mutantes ah-768 (fapa) y ah-777 (fapg), permiti\u00f3 obtener la secuencia nucleot\u00eddica de la agrupaci\u00f3n g\u00e9nica relacionada con la captaci\u00f3n de hierro de elevada afinidad en a.Hydrophila ah-3. Dicha agrupaci\u00f3n g\u00e9nica consta de quince genes entre los cuales se localizan genes que codifican para la bios\u00edntesis del \u00e1cido dihidroxidobenzoico (gen<\/p>\n<p>&nbsp;<\/p>\n<h3>Datos acad\u00e9micos de la tesis doctoral \u00ab<strong>An\u00e1lisis gen\u00f3mico y prote\u00f3mico de los mecanismos de captaci\u00f3n de hierro en aeromonas mes\u00f3filas<\/strong>\u00ab<\/h3>\n<ul>\n<li><strong>T\u00edtulo de la tesis:<\/strong>\u00a0 An\u00e1lisis gen\u00f3mico y prote\u00f3mico de los mecanismos de captaci\u00f3n de hierro en aeromonas mes\u00f3filas <\/li>\n<li><strong>Autor:<\/strong>\u00a0 Cecilia Urgell Urpi <\/li>\n<li><strong>Universidad:<\/strong>\u00a0 Barcelona<\/li>\n<li><strong>Fecha de lectura de la tesis:<\/strong>\u00a0 02\/07\/2004<\/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>Joan Tom\u00e1s I Maga\u00f1a<\/li>\n<\/ul>\n<\/li>\n<li><strong>Tribunal<\/strong>\n<ul>\n<li>Presidente del tribunal: joan Jofre torroella <\/li>\n<li>consuelo Esteve s\u00e1nchez (vocal)<\/li>\n<li>Francisco Congregado c\u00f3rdoba (vocal)<\/li>\n<li>Jos\u00e9 Figueras Mar\u00eda (vocal)<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Tesis doctoral de Cecilia Urgell Urpi El objetivo central de la presente tesis doctoral fue la caracterizaci\u00f3n de los mecanismos [&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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