{"id":30710,"date":"2017-07-24T10:58:43","date_gmt":"2017-07-24T08:58:43","guid":{"rendered":"http:\/\/ibecbarcelona.eu\/?p=30710\/"},"modified":"2017-07-25T14:07:46","modified_gmt":"2017-07-25T12:07:46","slug":"un-metodo-de-nanoscopia-muestra-las-vias-de-transferencia-de-electrones","status":"publish","type":"post","link":"https:\/\/ibecbarcelona.eu\/es\/un-metodo-de-nanoscopia-muestra-las-vias-de-transferencia-de-electrones\/","title":{"rendered":"Un m\u00e9todo de nanoscop\u00eda muestra las v\u00edas de transferencia de electrones"},"content":{"rendered":"<p>La transferencia de electrones en prote\u00ednas es esencial en procesos biol\u00f3gicos cruciales; La respiraci\u00f3n celular, por ejemplo, consiste en la oxidaci\u00f3n de glucosa a CO<sub>2<\/sub> y la reducci\u00f3n de ox\u00edgeno en agua. A pesar de que los aspectos b\u00e1sicos de la transferencia de electrones han sido estudiados a fondo, hasta el momento no ha habido ninguna herramienta capaz de examinar los canales nanom\u00e9tricos  en que los electrones se transfieren.<\/p>\n<h6 class=\"caption\" style=\"float: left; width: 30%; padding: 0px 30px 10px 0px;\">Arriba: Im\u00e1genes simult\u00e1neas de alta resoluci\u00f3n: el nuevo m\u00e9todo, DECC, a la derecha. Una \u00fanica prote\u00edna<br \/>\n azurina muestra un punto submolecular con alta conductancia diferencial rodeada por una regi\u00f3n de conductancia inferior. Abajo: vista desde arriba de una proteina Azurina sobre una superficie de oro plana a nivel at\u00f3mico. La prote\u00edna est\u00e1 adherida a la superficie a trav\u00e9s de un par de residuos de ciste\u00edna (en verde); los residuos hidrof\u00f3bicos (en azul) rodean el centro redox (marr\u00f3n).<\/h6>\n<p>El grupo del IBEC, experto en microscop\u00eda de efecto t\u00fanel electroqu\u00edmica, ha incorporado la t\u00e9cnica de modulaci\u00f3n por corriente alterno a esta microscop\u00eda permiti\u00e9ndoles medir las propiedades electr\u00f3nicas locales de un electrodo, as\u00ed como los procesos redox que suceden en la interfase entre el electrodo y la soluci\u00f3n de inmersi\u00f3n. \u201cEste m\u00e9todo, la microscop\u00eda de Conducci\u00f3n Electroqu\u00edmica Diferencial (o DECC, del ingl\u00e9s Differential Electrochemical Conductance imaging), nos ha permitido ver la oxidaci\u00f3n reversible de un electrodo de hierro en la nanoescala\u201d, dice la primera autora del estudio Montserrat L\u00f3pez, una estudiante de doctorado en el grupo del profesor ICREA Pau Gorostiza Nanoprobes and Nanoswitches. \u201cTambi\u00e9n lo hemos usado para obtener im\u00e1genes de un sistema redox biomolecular, la prote\u00edna Azurina inmovilizada sobre oro\u201d.<\/p>\n<p>En particular, los investigadores fueron capaces de ver las regiones submoleculares con alta conductancia que act\u00faan como v\u00edas para la transferencia de electrones dentro de la prote\u00edna. Adem\u00e1s de permitir importantes avances en bioqu\u00edmica y bionanotecnolog\u00eda, este m\u00e9todo tambi\u00e9n abrir\u00e1 nuevas posibilidades para el dise\u00f1o y optimizaci\u00f3n de la electr\u00f3nica molecular, donde los compuestos sint\u00e9ticos son componentes para la construcci\u00f3n de dispositivos nanoelectr\u00f3nicos.<\/p>\n<p>&#8212;<\/p>\n<p><em><strong>Art\u00edculo de referencia:<\/strong> <\/em>M. L\u00f3pez-Mart\u00ednez, J. M. Art\u00e9s, V. Sarasso, M. Carminati, I. D\u00edez-P\u00e9rez, F. Sanz, &amp; P. Gorostiza (2017). <a href=\"http:\/\/onlinelibrary.wiley.com\/doi\/10.1002\/smll.201700958\/abstract\" target=\"_blank\" rel=\"noopener\">Differential Electrochemical Conductance Imaging at the Nanoscale<\/a>. <em>Small<\/em>, epub ahead of print<\/p>\n","protected":false},"excerpt":{"rendered":"<h3><img decoding=\"async\" data-src=\"https:\/\/ibecbarcelona.eu\/wp-content\/uploads\/2017\/07\/small_Pau.jpg\" alt=\"\" width=\"400\" height=\"377\" class=\"left size-full wp-image-30677 lazyload\" data-srcset=\"https:\/\/ibecbarcelona.eu\/wp-content\/uploads\/2017\/07\/small_Pau.jpg 400w, https:\/\/ibecbarcelona.eu\/wp-content\/uploads\/2017\/07\/small_Pau-300x283.jpg 300w, https:\/\/ibecbarcelona.eu\/wp-content\/uploads\/2017\/07\/small_Pau-138x130.jpg 138w, https:\/\/ibecbarcelona.eu\/wp-content\/uploads\/2017\/07\/small_Pau-150x141.jpg 150w\" data-sizes=\"(max-width: 400px) 100vw, 400px\" src=\"data:image\/svg+xml;base64,PHN2ZyB3aWR0aD0iMSIgaGVpZ2h0PSIxIiB4bWxucz0iaHR0cDovL3d3dy53My5vcmcvMjAwMC9zdmciPjwvc3ZnPg==\" style=\"--smush-placeholder-width: 400px; --smush-placeholder-aspect-ratio: 400\/377;\" \/>Un grupo del IBEC ha desarrollado una nueva t\u00e9cnica de microscop\u00eda capaz de medir la conductancia de mol\u00e9culas individuales, arrojando luz sobre los mecanismos moleculares que se esconden tras procesos biol\u00f3gicos como la respiraci\u00f3n, la fotos\u00edntesis y la regeneraci\u00f3n.<\/h3>\n<p>En su publicaci\u00f3n en la revista <em>Small<\/em>, el grupo  <a href=\"https:\/\/ibecbarcelona.eu\/nanoprobes\" target=\"_blank\" rel=\"noopener\">Nanoprobes and Nanoswitches<\/a>  describe un nueva forma de observar las v\u00edas de conducci\u00f3n en las prote\u00ednas y complejos redox &#8211; en las que la transferencia de electrones causa un cambio en la oxidaci\u00f3n &#8211; en la nanoescala.<\/p>\n","protected":false},"author":4,"featured_media":30677,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[97],"tags":[],"post_formats":[],"class_list":["post-30710","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-noticias-de-investigacion"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.4 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Un m\u00e9todo de nanoscop\u00eda muestra las v\u00edas de transferencia de electrones - 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\/un-metodo-de-nanoscopia-muestra-las-vias-de-transferencia-de-electrones\/\" \/>\n<meta property=\"og:locale\" content=\"es_ES\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Un m\u00e9todo de nanoscop\u00eda muestra las v\u00edas de transferencia de electrones - Institute for Bioengineering of Catalonia\" \/>\n<meta property=\"og:description\" content=\"Un grupo del IBEC ha desarrollado una nueva t\u00e9cnica de microscop\u00eda capaz de medir la conductancia de mol\u00e9culas individuales, arrojando luz sobre los mecanismos moleculares que se esconden tras procesos biol\u00f3gicos como la respiraci\u00f3n, la fotos\u00edntesis y la regeneraci\u00f3n.    En su publicaci\u00f3n en la revista Small, el grupo Nanoprobes and Nanoswitches describe un nueva forma de observar las v\u00edas de conducci\u00f3n en las prote\u00ednas y complejos redox - en las que la transferencia de electrones causa un cambio en la oxidaci\u00f3n - en la nanoescala.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/ibecbarcelona.eu\/es\/un-metodo-de-nanoscopia-muestra-las-vias-de-transferencia-de-electrones\/\" \/>\n<meta property=\"og:site_name\" content=\"Institute for Bioengineering of Catalonia\" \/>\n<meta property=\"article:published_time\" content=\"2017-07-24T08:58:43+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2017-07-25T12:07:46+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/ibecbarcelona.eu\/wp-content\/uploads\/2017\/07\/small_Pau.jpg\" \/>\n\t<meta property=\"og:image:width\" content=\"400\" \/>\n\t<meta property=\"og:image:height\" content=\"377\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/jpeg\" \/>\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\\\/un-metodo-de-nanoscopia-muestra-las-vias-de-transferencia-de-electrones\\\/#article\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/ibecbarcelona.eu\\\/es\\\/un-metodo-de-nanoscopia-muestra-las-vias-de-transferencia-de-electrones\\\/\"},\"author\":{\"name\":\"\u00c0ngels L\u00f3pez\",\"@id\":\"https:\\\/\\\/ibecbarcelona.eu\\\/#\\\/schema\\\/person\\\/c212c6b589546130be67986b9290e2b8\"},\"headline\":\"Un m\u00e9todo de nanoscop\u00eda muestra las v\u00edas de transferencia de electrones\",\"datePublished\":\"2017-07-24T08:58:43+00:00\",\"dateModified\":\"2017-07-25T12:07:46+00:00\",\"mainEntityOfPage\":{\"@id\":\"https:\\\/\\\/ibecbarcelona.eu\\\/es\\\/un-metodo-de-nanoscopia-muestra-las-vias-de-transferencia-de-electrones\\\/\"},\"wordCount\":437,\"publisher\":{\"@id\":\"https:\\\/\\\/ibecbarcelona.eu\\\/#organization\"},\"image\":{\"@id\":\"https:\\\/\\\/ibecbarcelona.eu\\\/es\\\/un-metodo-de-nanoscopia-muestra-las-vias-de-transferencia-de-electrones\\\/#primaryimage\"},\"thumbnailUrl\":\"https:\\\/\\\/ibecbarcelona.eu\\\/wp-content\\\/uploads\\\/2017\\\/07\\\/small_Pau.jpg\",\"articleSection\":[\"Noticias de investigaci\u00f3n\"],\"inLanguage\":\"es\"},{\"@type\":\"WebPage\",\"@id\":\"https:\\\/\\\/ibecbarcelona.eu\\\/es\\\/un-metodo-de-nanoscopia-muestra-las-vias-de-transferencia-de-electrones\\\/\",\"url\":\"https:\\\/\\\/ibecbarcelona.eu\\\/es\\\/un-metodo-de-nanoscopia-muestra-las-vias-de-transferencia-de-electrones\\\/\",\"name\":\"Un m\u00e9todo de nanoscop\u00eda muestra las v\u00edas de transferencia de electrones - 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