{"id":75890,"date":"2018-03-09T23:21:10","date_gmt":"2018-03-09T23:21:10","guid":{"rendered":"https:\/\/www.deberes.net\/tesis\/sin-categoria\/mecanismo-de-regulacion-de-un-promotor-de-la-bacteria-myxococcus-xanthus-inducible-por-luz-azul\/"},"modified":"2018-03-09T23:21:10","modified_gmt":"2018-03-09T23:21:10","slug":"mecanismo-de-regulacion-de-un-promotor-de-la-bacteria-myxococcus-xanthus-inducible-por-luz-azul","status":"publish","type":"post","link":"https:\/\/www.deberes.net\/tesis\/quimica\/mecanismo-de-regulacion-de-un-promotor-de-la-bacteria-myxococcus-xanthus-inducible-por-luz-azul\/","title":{"rendered":"Mecanismo de regulaci\u00f3n de un promotor de la bacteria myxococcus xanthus inducible por luz azul"},"content":{"rendered":"<h2>Tesis doctoral de <strong>  L\u00f3pez Rubio Jos\u00e9 Juan <\/strong><\/h2>\n<p>La bacteria myxococcus xanthus responde a la iluminaci\u00f3n con luz azul sintetizando carotenoides. La mayor\u00eda de los genes carotenog\u00e9nicos se agrupan en el oper\u00f3n carb, cuya expresi\u00f3n fotoinducible est\u00e1 regulada por las prote\u00ednas cara y cars. En la oscuridad, cara reprime la expresi\u00f3n del oper\u00f3n carb y, en la luz, cars contrarresta ese efecto represor.  la prote\u00edna cara presenta una organizaci\u00f3n novedosa de dominios. El extremo amino, cara(nter), es el dominio de uni\u00f3n a dna (similar al de los factores transcripcionales de la familia merr) y adem\u00e1s es el dominio que media la interacci\u00f3n con cars. El extremo carboxilo, cara(cter), es similar al dominio de uni\u00f3n a cobalaminas presente en enzimas que utilizan dicho compuesto como cofactor y est\u00e1 implicado en la oligomerizaci\u00f3n de cara.  la falta de expresi\u00f3n del oper\u00f3n carb en la oscuridad estar\u00eda provocada por la uni\u00f3n del represor cara, probablemente en forma de d\u00edmeros, a dos sitios adyacentes de un operador bipartito: (i) uno de alta afinidad, el pal\u00edndrome pi, situado aguas arriba del promotor del oper\u00f3n carb; (ii) y otro de baja afinidad, el pseudopal\u00edndrome pii, parcialmente solapante con la regi\u00f3n -35 del promotor. La ocupaci\u00f3n de pii por cara, promovida por su uni\u00f3n inicial a pi, impedir\u00eda el acceso de la polimerasa de rna al promotor y, por consiguiente, la transcripci\u00f3n del promotor del oper\u00f3n carb. Es probable que la uni\u00f3n cooperativa de cara al operador est\u00e9 mediada, al menos en parte, por la interacci\u00f3n f\u00edsica entre dos d\u00edmeros del represor unidos a la misma cara del dna. En ese caso, puesto que cara contacta consigo misma a trav\u00e9s de su dominio c-terminal, ser\u00eda razonable esperar que fuera tambi\u00e9n dicho dominio el responsable de las interacciones cooperativas.  la iluminaci\u00f3n con luz azul activa la s\u00edntesis de la prote\u00edna antirrepresora cars, que al interaccionar espec\u00edficamente con el dominio n-terminal de cara interferir\u00eda con su u<\/p>\n<p>&nbsp;<\/p>\n<h3>Datos acad\u00e9micos de la tesis doctoral \u00ab<strong>Mecanismo de regulaci\u00f3n de un promotor de la bacteria myxococcus xanthus inducible por luz azul<\/strong>\u00ab<\/h3>\n<ul>\n<li><strong>T\u00edtulo de la tesis:<\/strong>\u00a0 Mecanismo de regulaci\u00f3n de un promotor de la bacteria myxococcus xanthus inducible por luz azul <\/li>\n<li><strong>Autor:<\/strong>\u00a0  L\u00f3pez Rubio Jos\u00e9 Juan <\/li>\n<li><strong>Universidad:<\/strong>\u00a0 Murcia<\/li>\n<li><strong>Fecha de lectura de la tesis:<\/strong>\u00a0 20\/07\/2005<\/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>Monserrat Elias Arnanz<\/li>\n<\/ul>\n<\/li>\n<li><strong>Tribunal<\/strong>\n<ul>\n<li>Presidente del tribunal: margarita Salas <\/li>\n<li>Javier Paz ares (vocal)<\/li>\n<li>Fernando Rojo (vocal)<\/li>\n<li> Garc\u00eda borr\u00f3n Jos\u00e9 Carlos (vocal)<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Tesis doctoral de L\u00f3pez Rubio Jos\u00e9 Juan La bacteria myxococcus xanthus responde a la iluminaci\u00f3n con luz azul sintetizando carotenoides. [&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":[160,115,8235,17],"tags":[14892,4581,11657,163892,160595,41981],"class_list":["post-75890","post","type-post","status-publish","format-standard","hentry","category-bioquimica","category-bioquimica-molecular","category-murcia","category-quimica","tag-fernando-rojo","tag-garcia-borron-jose-carlos","tag-javier-paz-ares","tag-lopez-rubio-jose-juan","tag-margarita-salas","tag-monserrat-elias-arnanz"],"_links":{"self":[{"href":"https:\/\/www.deberes.net\/tesis\/wp-json\/wp\/v2\/posts\/75890","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=75890"}],"version-history":[{"count":0,"href":"https:\/\/www.deberes.net\/tesis\/wp-json\/wp\/v2\/posts\/75890\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.deberes.net\/tesis\/wp-json\/wp\/v2\/media?parent=75890"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.deberes.net\/tesis\/wp-json\/wp\/v2\/categories?post=75890"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.deberes.net\/tesis\/wp-json\/wp\/v2\/tags?post=75890"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}