
{"id":64444,"date":"2018-12-10T12:02:47","date_gmt":"2018-12-10T11:02:47","guid":{"rendered":"http:\/\/ibecbarcelona.eu\/les-proteines-poden-transferir-electrons-a-distancia\/"},"modified":"2020-06-15T13:06:56","modified_gmt":"2020-06-15T11:06:56","slug":"les-proteines-poden-transferir-electrons-a-distancia","status":"publish","type":"post","link":"https:\/\/ibecbarcelona.eu\/es\/les-proteines-poden-transferir-electrons-a-distancia\/","title":{"rendered":"Las prote\u00ednas pueden transferir electrones a distancia"},"content":{"rendered":"<p>La reubicaci\u00f3n de un electr\u00f3n desde una entidad qu\u00edmica a otra \u2014la transferencia de electrones (TE)\u2014, no ocurre de forma pasiva, sino que los electrones son transportados individualmente por prote\u00ednas redox.<\/p>\n<p>Las exigencias de estas prote\u00ednas en cuanto a sus capacidades de TE pueden ser conflictivas: su uni\u00f3n tiene que ser estrecha para mantener altas tasas de TE, pero suficientemente d\u00e9bil para permitir un alto nivel de rotaci\u00f3n, as\u00ed como una TE eficiente. A medida que los las prote\u00ednas redox se aproximan entre s\u00ed, se forma un complejo de \u00abencuentro inicial\u00bb que conduce a un complejo final \u00abactivo\u00bb, que es el momento en el supuestamente se producir\u00eda la transferencia de electrones.<br \/>\n<img decoding=\"async\" class=\"size-full wp-image-63734 alignright lazyload\" data-src=\"https:\/\/ibecbarcelona.eu\/wp-content\/uploads\/2018\/12\/PGorostiza_web2.png\" alt=\"\" width=\"500\" height=\"333\" data-srcset=\"https:\/\/ibecbarcelona.eu\/wp-content\/uploads\/2018\/12\/PGorostiza_web2.png 500w, https:\/\/ibecbarcelona.eu\/wp-content\/uploads\/2018\/12\/PGorostiza_web2-300x200.png 300w, https:\/\/ibecbarcelona.eu\/wp-content\/uploads\/2018\/12\/PGorostiza_web2-195x130.png 195w, https:\/\/ibecbarcelona.eu\/wp-content\/uploads\/2018\/12\/PGorostiza_web2-150x100.png 150w\" data-sizes=\"(max-width: 500px) 100vw, 500px\" src=\"data:image\/svg+xml;base64,PHN2ZyB3aWR0aD0iMSIgaGVpZ2h0PSIxIiB4bWxucz0iaHR0cDovL3d3dy53My5vcmcvMjAwMC9zdmciPjwvc3ZnPg==\" style=\"--smush-placeholder-width: 500px; --smush-placeholder-aspect-ratio: 500\/333;\" \/><\/p>\n<p>Mediante la cristalograf\u00eda de rayos X se ha podido mostrar la estructura de varios complejos activos entre prote\u00ednas redox, y las diferencias sustanciales observadas en la distancia entre los sitios activos de algunos de ellos, ha planteado la cuesti\u00f3n de si la TE entre prote\u00ednas podr\u00eda producirse mientras la prote\u00edna se acercaba su prote\u00edna complementaria. Investigadores de los grupos de Nanobioingenier\u00eda y de Nanosondas y Nanoconmutadores del IBEC, junto con sus colaboradores en la Universidad de Barcelona (UB) y la Universidad de Sevilla, han trabajado en el uso una t\u00e9cnica llamada espectroscopia de efecto t\u00fanel electroqu\u00edmica para mostrar que la corriente entre dos prote\u00ednas redox se produce a distancias sorprendentemente largas.<\/p>\n<p>\u201cLas simulaciones computacionales sugieren que las prote\u00ednas pueden manipular la soluci\u00f3n que las separa para realizar sus funciones de TE\u201d, explica Anna Lagunas, investigadora s\u00e9nior del grupo de Nanobioingenier\u00eda del IBEC y primera autora del art\u00edculo. \u201cHemos visto una reducci\u00f3n de la densidad i\u00f3nica entre las prote\u00ednas, que genera una v\u00eda por donde se extiende su campo el\u00e9ctrico a trav\u00e9s de la soluci\u00f3n acuosa\u201d.<\/p>\n<p>Esta observaci\u00f3n cuestiona la hip\u00f3tesis aceptada en que la formaci\u00f3n de un complejo fuerte entre las prote\u00ednas es necesario para transferir la carga, y puede aportar una explicaci\u00f3n de c\u00f3mo las prote\u00ednas redox concilian una alta especificidad con una uni\u00f3n m\u00e1s d\u00e9bil, para mantener la alta tasa de rotaci\u00f3n que requiere la TE.<\/p>\n<p>&#8212;<\/p>\n<p><em>A<\/em><em>. <\/em><em>Lagunas<\/em><em>, <\/em><em>A<\/em><em>. <\/em><em>Guerra<\/em><em>&#8211;<\/em><em>Castellano<\/em><em>, <\/em><em>A<\/em><em>. <\/em><em>Nin<\/em><em>&#8211;<\/em><em>Hill<\/em><em>, <\/em><em>I<\/em><em>. <\/em><em>Diaz<\/em><em>&#8211;<\/em><em>Moreno<\/em><em>, <\/em><em>M<\/em><em>. <\/em><em>A<\/em><em>. <\/em><em>De<\/em> <em>la<\/em> <em>Rosa<\/em><em>, <\/em><em>J<\/em><em>. <\/em><em>Samitier<\/em><em>, <\/em><em>C<\/em><em>. <\/em><em>Rovira<\/em><em>, <\/em><em>P<\/em><em>. <\/em><em>Gorostiza<\/em><em> (2018). <\/em><em>Long<\/em> <em>distance<\/em> <em>electron<\/em> <em>transfer<\/em> <em>through<\/em> <em>the<\/em> <em>aqueous<\/em> <em>solution<\/em> <em>between<\/em> <em>redox<\/em> <em>partner<\/em> <em>proteins<\/em><em>. <\/em>Nature Communications<em>, epub ahead of print.<\/em><\/p>\n","protected":false},"excerpt":{"rendered":"<h3><img decoding=\"async\" class=\"left size-medium wp-image-63624 lazyload\" data-src=\"http:\/\/www.ibecbarcelona.eu\/wp-content\/uploads\/2018\/12\/AnnaLagunas_JosepSamitier_web.png\" alt=\"\" width=\"500\" height=\"\"  src=\"data:image\/svg+xml;base64,PHN2ZyB3aWR0aD0iMSIgaGVpZ2h0PSIxIiB4bWxucz0iaHR0cDovL3d3dy53My5vcmcvMjAwMC9zdmciPjwvc3ZnPg==\">Investigadores del Instituto de Bioingener\u00eda de Catalunya (IBEC) han publicado un estudio en la revista Nature Communications que revela que la transferencia de electrones puede tener lugar mientras una prote\u00edna se aproxima a su prote\u00edna complementaria, y no solo cuando \u00e9stas ya est\u00e1n unidas, como se pensaba hasta ahora.<\/h3>\n<p>Estos resultados abren la puerta a una nueva forma de considerar c\u00f3mo interact\u00faan las prote\u00ednas y puede tener implicaciones para entender mejor otros muchos procesos, como la fotos\u00edntesis, la respiraci\u00f3n o la desintoxicaci\u00f3n, en los que la transferencia de electrones desempe\u00f1a un papel importante.<\/p>\n","protected":false},"author":4,"featured_media":63700,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[97],"tags":[1137,1152],"post_formats":[],"class_list":["post-64444","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-noticias-de-investigacion","tag-josep-samitier-es","tag-pau-gorostiza-es"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.4 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Las prote\u00ednas pueden transferir electrones a distancia - Institute for Bioengineering of Catalonia<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/ibecbarcelona.eu\/es\/les-proteines-poden-transferir-electrons-a-distancia\/\" \/>\n<meta property=\"og:locale\" content=\"es_ES\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Las prote\u00ednas pueden transferir electrones a distancia - Institute for Bioengineering of Catalonia\" \/>\n<meta property=\"og:description\" content=\"Investigadores del Instituto de Bioingener\u00eda de Catalunya (IBEC) han publicado un estudio en la revista Nature Communications que revela que la transferencia de electrones puede tener lugar mientras una prote\u00edna se aproxima a su prote\u00edna complementaria, y no solo cuando \u00e9stas ya est\u00e1n unidas, como se pensaba hasta ahora. Estos resultados abren la puerta a una nueva forma de considerar c\u00f3mo interact\u00faan las prote\u00ednas y puede tener implicaciones para entender mejor otros muchos procesos, como la fotos\u00edntesis, la respiraci\u00f3n o la desintoxicaci\u00f3n, en los que la transferencia de electrones desempe\u00f1a un papel importante.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/ibecbarcelona.eu\/es\/les-proteines-poden-transferir-electrons-a-distancia\/\" \/>\n<meta property=\"og:site_name\" content=\"Institute for Bioengineering of Catalonia\" \/>\n<meta property=\"article:published_time\" content=\"2018-12-10T11:02:47+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2020-06-15T11:06:56+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/ibecbarcelona.eu\/wp-content\/uploads\/2018\/12\/AnnaLagunas_JosepSamitier_web.png\" \/>\n\t<meta property=\"og:image:width\" content=\"500\" \/>\n\t<meta property=\"og:image:height\" content=\"328\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/png\" \/>\n<meta name=\"author\" content=\"\u00c0ngels L\u00f3pez\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"Escrito por\" \/>\n\t<meta name=\"twitter:data1\" content=\"\u00c0ngels L\u00f3pez\" \/>\n\t<meta name=\"twitter:label2\" content=\"Tiempo de lectura\" \/>\n\t<meta name=\"twitter:data2\" content=\"2 minutos\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\\\/\\\/schema.org\",\"@graph\":[{\"@type\":\"Article\",\"@id\":\"https:\\\/\\\/ibecbarcelona.eu\\\/es\\\/les-proteines-poden-transferir-electrons-a-distancia\\\/#article\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/ibecbarcelona.eu\\\/es\\\/les-proteines-poden-transferir-electrons-a-distancia\\\/\"},\"author\":{\"name\":\"\u00c0ngels L\u00f3pez\",\"@id\":\"https:\\\/\\\/ibecbarcelona.eu\\\/#\\\/schema\\\/person\\\/c212c6b589546130be67986b9290e2b8\"},\"headline\":\"Las prote\u00ednas pueden transferir electrones a distancia\",\"datePublished\":\"2018-12-10T11:02:47+00:00\",\"dateModified\":\"2020-06-15T11:06:56+00:00\",\"mainEntityOfPage\":{\"@id\":\"https:\\\/\\\/ibecbarcelona.eu\\\/es\\\/les-proteines-poden-transferir-electrons-a-distancia\\\/\"},\"wordCount\":436,\"publisher\":{\"@id\":\"https:\\\/\\\/ibecbarcelona.eu\\\/#organization\"},\"image\":{\"@id\":\"https:\\\/\\\/ibecbarcelona.eu\\\/es\\\/les-proteines-poden-transferir-electrons-a-distancia\\\/#primaryimage\"},\"thumbnailUrl\":\"https:\\\/\\\/ibecbarcelona.eu\\\/wp-content\\\/uploads\\\/2018\\\/12\\\/AnnaLagunas_JosepSamitier_web.png\",\"keywords\":[\"Josep Samitier\",\"Pau Gorostiza\"],\"articleSection\":[\"Noticias de investigaci\u00f3n\"],\"inLanguage\":\"es\"},{\"@type\":\"WebPage\",\"@id\":\"https:\\\/\\\/ibecbarcelona.eu\\\/es\\\/les-proteines-poden-transferir-electrons-a-distancia\\\/\",\"url\":\"https:\\\/\\\/ibecbarcelona.eu\\\/es\\\/les-proteines-poden-transferir-electrons-a-distancia\\\/\",\"name\":\"Las prote\u00ednas pueden transferir electrones a distancia - 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