{"id":58378,"date":"2007-09-05T00:00:00","date_gmt":"2007-09-05T00:00:00","guid":{"rendered":"https:\/\/www.deberes.net\/tesis\/sin-categoria\/caracterizacion-y-regulacion-fisiologica-de-la-isocitrato-deshidrogenasa-de-prochlorococcus-sp\/"},"modified":"2007-09-05T00:00:00","modified_gmt":"2007-09-05T00:00:00","slug":"caracterizacion-y-regulacion-fisiologica-de-la-isocitrato-deshidrogenasa-de-prochlorococcus-sp","status":"publish","type":"post","link":"https:\/\/www.deberes.net\/tesis\/enzimologia\/caracterizacion-y-regulacion-fisiologica-de-la-isocitrato-deshidrogenasa-de-prochlorococcus-sp\/","title":{"rendered":"Caracterizaci\u00f3n y regulaci\u00f3n fisiol\u00f3gica de la isocitrato deshidrogenasa de prochlorococcus sp."},"content":{"rendered":"<h2>Tesis doctoral de <strong>  Lopez Lozano Francisco Antonio <\/strong><\/h2>\n<p>Prochlorococcus sp., Es una cianobacteria marina de singular importancia ecol\u00f3gica que destaca por ser uno de los organismos m\u00e1s representativos del fitoplancton, responsable de una parte significativa de la producci\u00f3n primaria global.     las cianobacterias presentan un ciclo de los \u00e1cidos tricarbox\u00edlicos incompleto que sit\u00faa a la isocitrato deshidrogenasa dependiente de nadp (nadp-icdh) al final de una de las dos v\u00edas metab\u00f3licas que resultan de la rotura del ciclo de brebs. La nadp-icdh, que proporciona el 2-oxoglutarato al ciclo de la glutamina sintetasa\/glutamato sintasa, ocupa as\u00ed una posici\u00f3n clave en la interacci\u00f3n de los metabolismos del carbono y del nitr\u00f3geno.     en este trabajo se ha realizado un estudio detallado, y a diferentes niveles, de la isocitrato deshidrogenasa dependiente de nadp (nadp-icdh) de prochlorococcus sp. As\u00ed, se ha determinado la influencia que tienen diversas condiciones medioambientes, y tratamientos con inhibidores, sobre su actividad enzim\u00e1tica y expresi\u00f3n del gen icd, codificante de esta prote\u00edna. Para ello, se ha caracterizado en primer lugar la actividad nadp-icdh, y optimizado la determinaci\u00f3n de la expresi\u00f3n g\u00e9nica de icd y otros genes implicados en el metabolismo del nitr\u00f3geno y el carbono. Asimismo, se ha abordado la clonaci\u00f3n del gen icd en dos de las estirpes de prochlorococcus spo., Y la cuantificaci\u00f3n de la cantidad de prote\u00edna nadp-icdh mediante western blot.   los resultados obtenidos se\u00f1alan la similitud f\u00edsico-qu\u00edmica y cin\u00e9tica de esta enzima con las de us hom\u00f3logas en otras cianobacterias, aunque su respuesta frente a diversos factores experimentales difiera de la mostrada por otros miembros de este grupo. Por otra parte, los resultados parecen demostrar que el mecanismo de control que regula la asimilaci\u00f3n de nitr\u00f3geno en prochlorococcus spo., No se ajusta al descrito en otras cianobacterias.<\/p>\n<p>&nbsp;<\/p>\n<h3>Datos acad\u00e9micos de la tesis doctoral \u00ab<strong>Caracterizaci\u00f3n y regulaci\u00f3n fisiol\u00f3gica de la isocitrato deshidrogenasa de prochlorococcus sp.<\/strong>\u00ab<\/h3>\n<ul>\n<li><strong>T\u00edtulo de la tesis:<\/strong>\u00a0 Caracterizaci\u00f3n y regulaci\u00f3n fisiol\u00f3gica de la isocitrato deshidrogenasa de prochlorococcus sp. <\/li>\n<li><strong>Autor:<\/strong>\u00a0  Lopez Lozano Francisco Antonio <\/li>\n<li><strong>Universidad:<\/strong>\u00a0 C\u00f3rdoba<\/li>\n<li><strong>Fecha de lectura de la tesis:<\/strong>\u00a0 09\/05\/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>Jes\u00fas D\u00edez Dapena<\/li>\n<\/ul>\n<\/li>\n<li><strong>Tribunal<\/strong>\n<ul>\n<li>Presidente del tribunal: Francisco Castillo rodriguez <\/li>\n<li>encarnaci\u00f3n Alejandre dur\u00e1n (vocal)<\/li>\n<li> Martinez galisteo Mar\u00eda  emilia (vocal)<\/li>\n<li> Muro pastor Mar\u00eda  isabel (vocal)<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Tesis doctoral de Lopez Lozano Francisco Antonio Prochlorococcus sp., Es una cianobacteria marina de singular importancia ecol\u00f3gica que destaca por 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