{"id":85899,"date":"2018-03-10T00:10:25","date_gmt":"2018-03-10T00:10:25","guid":{"rendered":"https:\/\/www.deberes.net\/tesis\/sin-categoria\/analisis-molecular-de-la-expresion-de-genes-para-la-asimilacion-de-nitrato-en-chlamydomonas-reinharddtii\/"},"modified":"2018-03-10T00:10:25","modified_gmt":"2018-03-10T00:10:25","slug":"analisis-molecular-de-la-expresion-de-genes-para-la-asimilacion-de-nitrato-en-chlamydomonas-reinharddtii","status":"publish","type":"post","link":"https:\/\/www.deberes.net\/tesis\/quimica\/analisis-molecular-de-la-expresion-de-genes-para-la-asimilacion-de-nitrato-en-chlamydomonas-reinharddtii\/","title":{"rendered":"Analisis molecular de la expresion de genes para la asimilacion de nitrato en chlamydomonas reinharddtii"},"content":{"rendered":"<h2>Tesis doctoral de <strong> Ia Gomez Garcia <\/strong><\/h2>\n<p>El nitrato \/nitrito entra a la c\u00e9lula por los transportadores especif\u00edcos. una vez en el citoplasma la nr reduce el nitrato a nitrito utilizando poder reductor en forma de nadh. El nitrito entra al cloroplasto por transportadores, tales como el codificado pro el ya clonado gen nar1 ( rexach et al., 2000). dentro del cloroplasto la nitrito reductasa dependiente de ferredoxina, reduce este nitrito a amonio, para lo que son necesarios 6 electrones.  en el cloroplasto existe adem\u00e1s una enzima, la malato deshidrogenasa dependiente de nadp+, que interconvierte el malato en oaa y es la enzima reguladora de la lanzadera de malato cloroplasto. Este sistema lanzadera es el que se encarga de balancear los niveles de poder reductor en forma de nadph\/nadh entre el cloroplasto y citoplasma. Ese poder reductor (nadh) es utilizado a su vez en el citoplasma pro la nr para producir m\u00e1s nitrito.  existe otro sistema lanzadera de malatao-oaa entre el citoplasma y la mitocondria par balancear igualmente los niveles de nadh entre estos dos compartimetnos celulares. Este proceso suministra poder reductor para procesos tales como la cadena mitocondrial y la reducci\u00f3n de nitrato en el citoplasma.  dentro de la cadena transportadora de electrones existe una ramificaci\u00f3n a nivel del pool de ubiquinosas. La oxidasa terminal responsable es la oxidasa alternativa. La respiraci\u00f3n alternativa supone para la c\u00e9lula un gasto aparentemente in\u00fatil de energ\u00eda, ya que esta ruta evita dos pasos en los que se produce la traslocaci\u00f3n de protones acopladas a la s\u00edntesis de atp.  se ha descrito que el nitrito se reduce a no en la cadena respiratoria a nivel del citocromo bc1 (kozlover al., 1999) y que este no inhibe la citocromo c oxidasa, pero no inhibe la oxidasa alternativa.(Millar y day, 1996). Ser\u00eda entonces el nitrito producido por la nitrato reductasa el que aumentar\u00eda la expresi\u00f3n de aox1 por inhibici\u00f3n de la ruta del citocromo c. Esto explicar\u00eda tambi<\/p>\n<p>&nbsp;<\/p>\n<h3>Datos acad\u00e9micos de la tesis doctoral \u00ab<strong>Analisis molecular de la expresion de genes para la asimilacion de nitrato en chlamydomonas reinharddtii<\/strong>\u00ab<\/h3>\n<ul>\n<li><strong>T\u00edtulo de la tesis:<\/strong>\u00a0 Analisis molecular de la expresion de genes para la asimilacion de nitrato en chlamydomonas reinharddtii <\/li>\n<li><strong>Autor:<\/strong>\u00a0 Ia Gomez Garcia <\/li>\n<li><strong>Universidad:<\/strong>\u00a0 C\u00f3rdoba<\/li>\n<li><strong>Fecha de lectura de la tesis:<\/strong>\u00a0 13\/07\/2000<\/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>Emilio Fernandez Reyes<\/li>\n<\/ul>\n<\/li>\n<li><strong>Tribunal<\/strong>\n<ul>\n<li>Presidente del tribunal: conrado Moreno vivian <\/li>\n<li>Francisco Centeno vel\u00e1zquez (vocal)<\/li>\n<li>Antonio  Jos\u00e9 M\u00e1rquez cabeza (vocal)<\/li>\n<li>Francisco Gamarro conde (vocal)<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Tesis doctoral de Ia Gomez Garcia El nitrato \/nitrito entra a la c\u00e9lula por los transportadores especif\u00edcos. una vez en [&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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