{"id":80263,"date":"2018-03-10T00:03:59","date_gmt":"2018-03-10T00:03:59","guid":{"rendered":"https:\/\/www.deberes.net\/tesis\/sin-categoria\/purificacion-y-regulacion-de-la-6-fosfofructo-1-quinasa-de-higado-y-musculo-esqueletico-de-sparus-aurata\/"},"modified":"2018-03-10T00:03:59","modified_gmt":"2018-03-10T00:03:59","slug":"purificacion-y-regulacion-de-la-6-fosfofructo-1-quinasa-de-higado-y-musculo-esqueletico-de-sparus-aurata","status":"publish","type":"post","link":"https:\/\/www.deberes.net\/tesis\/quimica\/purificacion-y-regulacion-de-la-6-fosfofructo-1-quinasa-de-higado-y-musculo-esqueletico-de-sparus-aurata\/","title":{"rendered":"Purificacion y regulacion de la 6 fosfofructo 1-quinasa de higado y musculo esqueletico de sparus aurata."},"content":{"rendered":"<h2>Tesis doctoral de <strong> Dominica Mediavilla Redondo <\/strong><\/h2>\n<p>El objetivo de esta tesis ha sido estudiar las bases moleculares implicadas en la regulacion del metabolismo de carbohidratos en peces carnivoros como la dorada, sparus aurata. Se ha purificado a homogeneidad la enzima 6 fosfofructo 1-quinasa (6 pf 1-k) de higado y musculo esqueletico de s.Aurata. Los resultados obtenidos indican la existencia de ciertas diferencias a nivel estructural de la enzima 6 pf 1-kde s.Aurata, en relaci\u00f3n con la enzima de otras procedencias. en general, la 6 pf 1-k de la mayor parte de tejidos en numerosos organismos es una enzima tetram\u00e9rica. En dorada, la 6 pf 1-k hepatica es una enzima hexamerica y la 6 pf 1-k muscular, una enzima primordial en la regulaci\u00f3n de la 6 pf 1-k hepatica, inhibiendola, acci\u00f3n que, ademas, resulta ser inusual, ya que, a bajas concentraciones, este metabolito se comporta como un efector positivo de la 6 pf 1-k de numerosos organismos, incluidos los mamiferos. Asi mismo, en dorada, la acci\u00f3n de efectores como el acido 3-fosfoglicerico, el citraro y fosfoenolpiruvato, a concentraciones descritas para los mismos como fisiologicas en musculo esqueletico de pez, podria adquirir relevancia en la regulaci\u00f3n de la 6 pf 1-k muscular, si se compara con la acci\u00f3n de tales efectores sobre la isoenzima muscular de mamiferos. En dorada, la i50 para el acido  3-fosfoglic\u00e9rico, citrato y fosfoenolpiruvato uno o dos ordenes inferiores a los que muestra dicha isoenzima en mamiferos. esto podria hacer que la actividad 6 pf 1-k dificultase la utilizacion de carbohidratos en higado y musculo esqueletico del teleosteo, probablemente por estar adaptado mejor a dietas preferentemente proteicas en su medio natural.<\/p>\n<p>&nbsp;<\/p>\n<h3>Datos acad\u00e9micos de la tesis doctoral \u00ab<strong>Purificacion y regulacion de la 6 fosfofructo 1-quinasa de higado y musculo esqueletico de sparus aurata.<\/strong>\u00ab<\/h3>\n<ul>\n<li><strong>T\u00edtulo de la tesis:<\/strong>\u00a0 Purificacion y regulacion de la 6 fosfofructo 1-quinasa de higado y musculo esqueletico de sparus aurata. <\/li>\n<li><strong>Autor:<\/strong>\u00a0 Dominica Mediavilla Redondo <\/li>\n<li><strong>Universidad:<\/strong>\u00a0 Barcelona<\/li>\n<li><strong>Fecha de lectura de la tesis:<\/strong>\u00a0 30\/06\/1999<\/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>Mar\u00eda  Isabel V\u00e1zquez Baanante<\/li>\n<\/ul>\n<\/li>\n<li><strong>Tribunal<\/strong>\n<ul>\n<li>Presidente del tribunal: Juan Aguilar piera <\/li>\n<li>Antonio Vilamarin cid (vocal)<\/li>\n<li>anna Mar\u00eda Bassols teixido (vocal)<\/li>\n<li>  (vocal)<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Tesis doctoral de Dominica Mediavilla Redondo El objetivo de esta tesis ha sido estudiar las bases moleculares implicadas en la [&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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