{"id":22602,"date":"2003-11-04T00:00:00","date_gmt":"2003-11-04T00:00:00","guid":{"rendered":"https:\/\/www.deberes.net\/tesis\/sin-categoria\/identificacion-y-caracterizacion-de-polipeptidos-similares-a-esterasas-y-fibronectinas-como-marcadores-de-la-diferenciacion-sexual-del-tejido-gonadal-en-moluscos-bivalvos-marinos\/"},"modified":"2003-11-04T00:00:00","modified_gmt":"2003-11-04T00:00:00","slug":"identificacion-y-caracterizacion-de-polipeptidos-similares-a-esterasas-y-fibronectinas-como-marcadores-de-la-diferenciacion-sexual-del-tejido-gonadal-en-moluscos-bivalvos-marinos","status":"publish","type":"post","link":"https:\/\/www.deberes.net\/tesis\/a-coruna\/identificacion-y-caracterizacion-de-polipeptidos-similares-a-esterasas-y-fibronectinas-como-marcadores-de-la-diferenciacion-sexual-del-tejido-gonadal-en-moluscos-bivalvos-marinos\/","title":{"rendered":"Identificaci\u00f3n y caracterizaci\u00f3n de polip\u00e9ptidos similares a esterasas y fibronectinas como marcadores de la diferenciaci\u00f3n sexual del tejido gonadal en moluscos bivalvos marinos"},"content":{"rendered":"<h2>Tesis doctoral de <strong> Mar\u00eda Paz Fern\u00e1ndez-espa\u00f1a <\/strong><\/h2>\n<p>En bivalvos marinos la diferenciaci\u00f3n sexual de la g\u00f3nada podr\u00eda reflejarse en una expresi\u00f3n proteica sexo-dependiente. Elegimos como modelo el bivalvo hermafrodita. Pecten maximus, que presenta un ovotestis en cuyas diferentes partes, masculina y femenina, se realiza de modo simult\u00e1neo espermatog\u00e9nesis u oog\u00e9nesis, respectivamente. El an\u00e1lisis electrofor\u00e9tico de los patrones proteicos de la parte masculina y femenina de la g\u00f3nada nos permiti\u00f3 detectar y caracterizar parcialmente dos tipos de polip\u00e9ptidos cuya expresi\u00f3n est\u00e1 asociada con la espermatog\u00e9nesis u oof\u00e9nesis.  el polip\u00e9ptido espec\u00edfico para el tejido testicular es similar a esterasas, y se denomin\u00f3 \u00abesterase-like polypeptide\u00bb (elp). Elp representa hasta un 8% del total de prote\u00ednas solubles del tejido testicular, y no se detecta en el tejido ov\u00e1rico. Elp es un polip\u00e9ptido no glicosilado, de peso molecular aparente 39 kda y punto isoel\u00e9ctrico 6.1. Mediante t\u00e9cnicas inmunoqu\u00edmicas se identific\u00f3 este polip\u00e9ptido como una prote\u00edna similar a las esterasas del tracto reproductivo masculino de m.Galloprovincialis (map) y d.Virilis (esterasa s.). Su composici\u00f3n en amino\u00e1cidos se caracteriza por un alto grado de similitud con la de map de m.Galloprovincialis y esterasa s. De d.Virilis. Sin embargo, la huella pept\u00eddica del elp no revel\u00f3 homolog\u00edas significativas ni con las obtenidas de map y esterasa s, ni con las almacenadas en las bases de datos. En el tejido testicular de p.Maximus se detect\u00f3 elp: en la membrana, esperma y fluido luminal de los fol\u00edculos esperm\u00e1ticos; en la parede de los gonoductos colectores y en el tejido conectivo inter-folicular. los niveles de elp disminuyen despu\u00e9s del desove.  entre los polip\u00e9ptidos \u00abovario-predominantes\u00bb del ovotestis de p.Maximus, detectamos polip\u00e9ptidos con propiedades similares a la fibronectina de mam\u00edferos, a los que denominamos \u00abfibronectin-like polypeptides\u00bb (flps). los flps se detecan tanto en el<\/p>\n<p>&nbsp;<\/p>\n<h3>Datos acad\u00e9micos de la tesis doctoral \u00ab<strong>Identificaci\u00f3n y caracterizaci\u00f3n de polip\u00e9ptidos similares a esterasas y fibronectinas como marcadores de la diferenciaci\u00f3n sexual del tejido gonadal en moluscos bivalvos marinos<\/strong>\u00ab<\/h3>\n<ul>\n<li><strong>T\u00edtulo de la tesis:<\/strong>\u00a0 Identificaci\u00f3n y caracterizaci\u00f3n de polip\u00e9ptidos similares a esterasas y fibronectinas como marcadores de la diferenciaci\u00f3n sexual del tejido gonadal en moluscos bivalvos marinos <\/li>\n<li><strong>Autor:<\/strong>\u00a0 Mar\u00eda Paz Fern\u00e1ndez-espa\u00f1a <\/li>\n<li><strong>Universidad:<\/strong>\u00a0 A coru\u00f1a<\/li>\n<li><strong>Fecha de lectura de la tesis:<\/strong>\u00a0 11\/04\/2003<\/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>Alexander Mikhailov Khodorevsky<\/li>\n<\/ul>\n<\/li>\n<li><strong>Tribunal<\/strong>\n<ul>\n<li>Presidente del tribunal: josefina M\u00e9ndez felpeto <\/li>\n<li>vicente Goyanes villaescusa (vocal)<\/li>\n<li>lucas S\u00e1nchez rodr\u00edguez (vocal)<\/li>\n<li>Juan  Miguel Ar\u00e9chaga mart\u00ednez (vocal)<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Tesis doctoral de Mar\u00eda Paz Fern\u00e1ndez-espa\u00f1a En bivalvos marinos la diferenciaci\u00f3n sexual de la g\u00f3nada podr\u00eda reflejarse en una expresi\u00f3n [&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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