{"id":65481,"date":"2018-03-09T22:53:33","date_gmt":"2018-03-09T22:53:33","guid":{"rendered":""},"modified":"2018-03-09T22:53:33","modified_gmt":"2018-03-09T22:53:33","slug":"el-regulador-fur-de-microcystis-aeruginosa-pcc7806-caracterizacion-y-analisis-de-su-papel-en-el-control-del-operon-mcy-estudiode-otros-factores-implicados-en-la-regulacion-de-la-expresion-de-genes-m","status":"publish","type":"post","link":"https:\/\/www.deberes.net\/tesis\/bioquimica-molecular\/el-regulador-fur-de-microcystis-aeruginosa-pcc7806-caracterizacion-y-analisis-de-su-papel-en-el-control-del-operon-mcy-estudiode-otros-factores-implicados-en-la-regulacion-de-la-expresion-de-genes-m\/","title":{"rendered":"El regulador fur de microcystis aeruginosa pcc7806: caracterizaci\u00f3n y an\u00e1lisis de su papel en el control del oper\u00f3n mcy. estudiode otros factores implicados en la regulaci\u00f3n de la expresi\u00f3n de genes mcy."},"content":{"rendered":"<h2>Tesis doctoral de <strong> Beatriz Mart\u00edn Luna <\/strong><\/h2>\n<p>Las cianobacterias producen en determinadas condiciones un variado grupo de metabolitos secundarios de car\u00e1cter t\u00f3xico para losorganismos eucariotas. En aguas continentales, la presencia de cianotoxinas se est\u00e1 convirtiendo en un problema creciente, debido ala eutrofizaci\u00f3n de los acu\u00edferos. Microcystis aeruginosa es la principal cianobacteria productora de la hepatotoxina microcistina.Este heptap\u00e9ptido c\u00edclico de naturaleza no ribosomal se sintetiza mediante un cluster g\u00e9nico mixto constituido por p\u00e9ptidosintetasas\/polic\u00e9tido sintasas denominado microcistina sintetasa (oper\u00f3n mcy) en m. Aeruginosa pcc7806.El hierro es un elemento esencial y escaso para el fitoplancton, ya que a pesar de ser muy abundante en la naturaleza, en presencia deox\u00edgeno y ph neutro se oxida y precipita con facilidad, por lo que habitualmente es un elemento limitante para organismos acu\u00e1ticos.Sin embargo, es importante destacar el gran potencial de este nutriente para inducir estr\u00e9s oxidativo, catalizando la formaci\u00f3n deespecies reactivas de ox\u00edgeno mediante la reacci\u00f3n de fenton. Por consiguiente, todos los microorganismos han desarrolladoevolutivamente mecanismos encaminados a mantener un riguroso equilibrio entre la incorporaci\u00f3n de hierro y su concentraci\u00f3nintracelular libre. En muchos procariotas, entre los que se incluyen las cianobacterias, la prote\u00edna fur (ferric uptake regulator) es elprincipal regulador transcripcional de la homeostasis del hierro.Para muchas bacterias pat\u00f3genas la disponibilidad de hierro es un par\u00e1metro que desencadena la expresi\u00f3n de factores de virulencia(muchos de ellos p\u00e9ptidos de s\u00edntesis no ribosomal) asociados con el \u00e9xito de la infecci\u00f3n. Fur controla la expresi\u00f3n de muchos deestos factores de patogenicidad en respuesta a los niveles de hierro, por ejemplo regulando la expresi\u00f3n de las p\u00e9ptido sintetasas quecatalizan la s\u00edntesis de algunos sider\u00f3foros como la vibriobactina o la enterobactina. Cuando la disponibilidad de hie<\/p>\n<p>&nbsp;<\/p>\n<h3>Datos acad\u00e9micos de la tesis doctoral \u00ab<strong>El regulador fur de microcystis aeruginosa pcc7806: caracterizaci\u00f3n y an\u00e1lisis de su papel en el control del oper\u00f3n mcy. estudiode otros factores implicados en la regulaci\u00f3n de la expresi\u00f3n de genes mcy.<\/strong>\u00ab<\/h3>\n<ul>\n<li><strong>T\u00edtulo de la tesis:<\/strong>\u00a0 El regulador fur de microcystis aeruginosa pcc7806: caracterizaci\u00f3n y an\u00e1lisis de su papel en el control del oper\u00f3n mcy. estudiode otros factores implicados en la regulaci\u00f3n de la expresi\u00f3n de genes mcy. <\/li>\n<li><strong>Autor:<\/strong>\u00a0 Beatriz Mart\u00edn Luna <\/li>\n<li><strong>Universidad:<\/strong>\u00a0 Zaragoza<\/li>\n<li><strong>Fecha de lectura de la tesis:<\/strong>\u00a0 22\/06\/2008<\/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 Luisa Peleato S\u00e1nchez<\/li>\n<\/ul>\n<\/li>\n<li><strong>Tribunal<\/strong>\n<ul>\n<li>Presidente del tribunal: rafael G\u00f3mez-lus lafita <\/li>\n<li>jordi Barb\u00e9 Garc\u00eda (vocal)<\/li>\n<li> Fernandez del campo gonzalez francisca (vocal)<\/li>\n<li> Hern\u00e1ndez pem\u00e1n Jos\u00e9 \u00e1ngel (vocal)<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Tesis doctoral de Beatriz Mart\u00edn Luna Las cianobacterias producen en determinadas condiciones un variado grupo de metabolitos secundarios de car\u00e1cter [&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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