{"id":31331,"date":"1997-01-01T00:00:00","date_gmt":"1997-01-01T00:00:00","guid":{"rendered":"https:\/\/www.deberes.net\/tesis\/sin-categoria\/aislamiento-y-caracterizacion-de-los-genes-de-biosintesis-de-histidina-de-la-bacteria-fototrofica-rhodobacter-sphaeroides\/"},"modified":"1997-01-01T00:00:00","modified_gmt":"1997-01-01T00:00:00","slug":"aislamiento-y-caracterizacion-de-los-genes-de-biosintesis-de-histidina-de-la-bacteria-fototrofica-rhodobacter-sphaeroides","status":"publish","type":"post","link":"https:\/\/www.deberes.net\/tesis\/quimica\/aislamiento-y-caracterizacion-de-los-genes-de-biosintesis-de-histidina-de-la-bacteria-fototrofica-rhodobacter-sphaeroides\/","title":{"rendered":"Aislamiento y caracterizacion de los genes de biosintesis de histidina de la bacteria fototrofica rhodobacter sphaeroides."},"content":{"rendered":"<h2>Tesis doctoral de <strong> Esther Oriol Rocafiguera <\/strong><\/h2>\n<p>Muchos genes estructurales de la ruta de biosintesis de histidina de especies diversas son capaces de complementar cepas auxotrofas de escherichia coli, incluso sin estar filogeneticamente relacionadas.  basandonos en este fenomeno hemos podido aislar por complementacion de mutantes caracterizados de e. Coli, ocho de los diez genes de biosintesis de histidina de la bacteria fototrofica rhodobacter sphaeroides.  se ha procedido a su secuenciacion y al posterior analisis de la secuencia. La comparacion entre las secuencias de aminoacidos deducidas ha permitido localizar las regiones mas conservadas y construir arboles filogeneticos.  por otra parte, se ha estudiado la regulacion de la expresion de estos genes mediante la construccion de fusiones his::lacz y la valoracion de la actividad b-galactosidasa. Asi, hemos comprobado que la transcripcion de los genes de sintesis de histidina en r.  sphaeroides no se ve afectada por la presencia del aminoacido en el medio.  se ha llevado a cabo tambien la construccion de mutantes auxotrofos en los genes hisa, hisi i hisg de r.  sphaeroides, cosa que ha proporcionado un fondo genetico mas adecuado para los estudios de complementacion.  por ultimo, se ha determinado la localizacion de los genes en el cromosoma de r. Sphaeroides mediante la tecnica de electroforesis de campo pulsado. Asi, los genes hisbd, hish, hisa, hisf y hise se encuentran agrupados en un unico cluster, mientras que, a diferencia de la disposicion que presenta e. Coli, los genes hisi y hisg se encuentran el lugares diferentes del cromosoma.<\/p>\n<p>&nbsp;<\/p>\n<h3>Datos acad\u00e9micos de la tesis doctoral \u00ab<strong>Aislamiento y caracterizacion de los genes de biosintesis de histidina de la bacteria fototrofica rhodobacter sphaeroides.<\/strong>\u00ab<\/h3>\n<ul>\n<li><strong>T\u00edtulo de la tesis:<\/strong>\u00a0 Aislamiento y caracterizacion de los genes de biosintesis de histidina de la bacteria fototrofica rhodobacter sphaeroides. <\/li>\n<li><strong>Autor:<\/strong>\u00a0 Esther Oriol Rocafiguera <\/li>\n<li><strong>Universidad:<\/strong>\u00a0 Aut\u00f3noma de barcelona<\/li>\n<li><strong>Fecha de lectura de la tesis:<\/strong>\u00a0 01\/01\/1997<\/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>Isidre Gibert Gonz\u00e1lez<\/li>\n<\/ul>\n<\/li>\n<li><strong>Tribunal<\/strong>\n<ul>\n<li>Presidente del tribunal: Josep Casadesus Pursals <\/li>\n<li>Blanca San Segundo De Los Mozos (vocal)<\/li>\n<li>Antonio Ju\u00e1rez Gim\u00e9nez (vocal)<\/li>\n<li> Torre Ma\u00f1as M. Elvira (vocal)<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Tesis doctoral de Esther Oriol Rocafiguera Muchos genes estructurales de la ruta de biosintesis de histidina de especies diversas son [&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":[1418,160,115,35,278,17],"tags":[1243,19912,87456,19702,9514,87457],"class_list":["post-31331","post","type-post","status-publish","format-standard","hentry","category-bacteriologia","category-bioquimica","category-bioquimica-molecular","category-ciencias-de-la-vida","category-microbiologia","category-quimica","tag-antonio-juarez-gimenez","tag-blanca-san-segundo-de-los-mozos","tag-esther-oriol-rocafiguera","tag-isidre-gibert-gonzalez","tag-josep-casadesus-pursals","tag-torre-manas-m-elvira"],"_links":{"self":[{"href":"https:\/\/www.deberes.net\/tesis\/wp-json\/wp\/v2\/posts\/31331","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=31331"}],"version-history":[{"count":0,"href":"https:\/\/www.deberes.net\/tesis\/wp-json\/wp\/v2\/posts\/31331\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.deberes.net\/tesis\/wp-json\/wp\/v2\/media?parent=31331"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.deberes.net\/tesis\/wp-json\/wp\/v2\/categories?post=31331"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.deberes.net\/tesis\/wp-json\/wp\/v2\/tags?post=31331"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}