{"id":60661,"date":"2018-03-09T22:48:29","date_gmt":"2018-03-09T22:48:29","guid":{"rendered":""},"modified":"2018-03-09T22:48:29","modified_gmt":"2018-03-09T22:48:29","slug":"diseccion-de-las-interacciones-protea%c2%adna-protea%c2%adna-y-protea%c2%adna-dna-entre-un-represor-su-dna-operador-y-su-antirrepresor-en-la-regulacion-de-un-promotor-fotoinducible-de-myxococcus-xant","status":"publish","type":"post","link":"https:\/\/www.deberes.net\/tesis\/ciencias-de-la-vida\/diseccion-de-las-interacciones-protea%c2%adna-protea%c2%adna-y-protea%c2%adna-dna-entre-un-represor-su-dna-operador-y-su-antirrepresor-en-la-regulacion-de-un-promotor-fotoinducible-de-myxococcus-xant\/","title":{"rendered":"Disecci\u00f3n de las interacciones prote\u00edna-prote\u00edna y prote\u00edna-dna entre un represor, su dna operador y su antirrepresor en la regulaci\u00f3n de un promotor fotoinducible de myxococcus xanthus"},"content":{"rendered":"<h2>Tesis doctoral de <strong>  Navarro Aviles Gloria M <\/strong><\/h2>\n<p>Las bacterias se adaptan a las condiciones ambientales fluctuantes regulando la expresi\u00f3n de genes espec\u00edficos. Un est\u00edmulo externo cr\u00edtico, la luz, afecta a varios procesos metab\u00f3licos, de desarrollo y de comportamiento tanto en bacterias como en organismos superiores. En algunas especies bacterianas la luz provoca la s\u00edntesis de carotenoides, que sirven para proteger del da\u00f1o fotooxidativo celular causado por el oxigeno singlete y otros radicales libres producidos como consecuencia de la iluminaci\u00f3n (armstrong, 1997). Los carotenoides juegan tambi\u00e9n un papel como intermediarios redox y como precursores de mol\u00e9culas necesarias para la  fotorrecepci\u00f3n y la acci\u00f3n hormonal (frank y brudvig, 2004). Un modelo importante para el estudio de la carotenog\u00e9nesis inducida por luz es la bacteria gram negativa    m. Xanthus, en la que los an\u00e1lisis gen\u00e9ticos y moleculares revelan un complejo circuito gen\u00e9tico que incluye varios factores y mecanismos de regulaci\u00f3n novedosos para la fotoinducci\u00f3n de las enzimas responsables de la s\u00edntesis de carotenoides. todos los genes de m. Xanthus implicados en la carotenog\u00e9nesis est\u00e1n agrupados en el oper\u00f3n carb, a excepci\u00f3n del gen crtlb (fontes et al., 1993; botella et al., 1995). El promotor que dirige la expresi\u00f3n del oper\u00f3n carb, pb, depende de la uni\u00f3n de la polimerasa de rna (rnap) asociada a  a, el principal factor sigma vegetativo en m. Xanthus. La inducci\u00f3n de pb por la luz esta \u00edntimamente ligada a la actividad del represor cara (ruiz-v\u00e1zquez et al., 1993; whitworth y hodgson, 2001; cervantes y murillo, 2002; l\u00f3pez-rubio et al., 2002). As\u00ed, en la oscuridad, pb se encuentra reprimido por la uni\u00f3n de cara a su operador de dise\u00f1o bipartito. Dicho operador consta de un sitio de alta afinidad (pi), que corresponde a un pal\u00edndrome perfecto interrumpido localizado aguas arriba de pb, y un sitio de baja afinidad (pii), una versi\u00f3n imperfecta de pi que solapa con la regi\u00f3n -35 de pb. Cara se une de form<\/p>\n<p>&nbsp;<\/p>\n<h3>Datos acad\u00e9micos de la tesis doctoral \u00ab<strong>Disecci\u00f3n de las interacciones prote\u00edna-prote\u00edna y prote\u00edna-dna entre un represor, su dna operador y su antirrepresor en la regulaci\u00f3n de un promotor fotoinducible de myxococcus xanthus<\/strong>\u00ab<\/h3>\n<ul>\n<li><strong>T\u00edtulo de la tesis:<\/strong>\u00a0 Disecci\u00f3n de las interacciones prote\u00edna-prote\u00edna y prote\u00edna-dna entre un represor, su dna operador y su antirrepresor en la regulaci\u00f3n de un promotor fotoinducible de myxococcus xanthus <\/li>\n<li><strong>Autor:<\/strong>\u00a0  Navarro Aviles Gloria M <\/li>\n<li><strong>Universidad:<\/strong>\u00a0 Murcia<\/li>\n<li><strong>Fecha de lectura de la tesis:<\/strong>\u00a0 28\/09\/2007<\/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>Subramanian Padmanabhan Iyer<\/li>\n<\/ul>\n<\/li>\n<li><strong>Tribunal<\/strong>\n<ul>\n<li>Presidente del tribunal: Francisco Solano mu\u00f1oz <\/li>\n<li>Mar\u00eda \u00e1ngeles Jim\u00e9nez l\u00f3pez (vocal)<\/li>\n<li>Rafael Giraldo suarez (vocal)<\/li>\n<li> Sanz morales Jes\u00fas m. (vocal)<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Tesis doctoral de Navarro Aviles Gloria M Las bacterias se adaptan a las condiciones ambientales fluctuantes regulando la expresi\u00f3n de [&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 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":[35,8235],"tags":[48558,133970,133968,51887,133971,133969],"class_list":["post-60661","post","type-post","status-publish","format-standard","hentry","category-ciencias-de-la-vida","category-murcia","tag-francisco-solano-munoz","tag-maria-angeles-jimenez-lopez","tag-navarro-aviles-gloria-m","tag-rafael-giraldo-suarez","tag-sanz-morales-jesus-m","tag-subramanian-padmanabhan-iyer"],"_links":{"self":[{"href":"https:\/\/www.deberes.net\/tesis\/wp-json\/wp\/v2\/posts\/60661","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=60661"}],"version-history":[{"count":0,"href":"https:\/\/www.deberes.net\/tesis\/wp-json\/wp\/v2\/posts\/60661\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.deberes.net\/tesis\/wp-json\/wp\/v2\/media?parent=60661"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.deberes.net\/tesis\/wp-json\/wp\/v2\/categories?post=60661"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.deberes.net\/tesis\/wp-json\/wp\/v2\/tags?post=60661"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}