{"id":5612,"date":"2011-03-28T07:47:45","date_gmt":"2011-03-28T07:47:45","guid":{"rendered":"http:\/\/ibecbarcelona.eu\/new\/dos-articulos-para-el-grupo-de-nanosondas\/"},"modified":"2015-01-07T14:09:02","modified_gmt":"2015-01-07T14:09:02","slug":"dos-articulos-para-el-grupo-de-nanosondas","status":"publish","type":"post","link":"https:\/\/ibecbarcelona.eu\/es\/dos-articulos-para-el-grupo-de-nanosondas\/","title":{"rendered":"Dos art\u00edculos para el grupo de Nanosondas"},"content":{"rendered":"

En un estudio publicado recientemente en ACS Nano, miembros del grupo de Nanosondas y Nanoconmutadores del IBEC describen c\u00f3mo usaron un microscopio electroqu\u00edmico de efecto t\u00fanel para medir la \u2018constante de decaimiento con la distancia\u2019 que caracteriza la tasa de TE en prote\u00ednas redox (prote\u00ednas en las que se da TE). El an\u00e1lisis de las medidas de la constante de decaimiento revela diferencias entre el estado reducido y el estado oxidizado de una prote\u00edna, lo que puede ser relevante para el control de tasas de TE en enzimas y cadenas biol\u00f3gicas de transporte de electrones.<\/p>\n

\u201cEl estudio de la TE es indispensable para la comprensi\u00f3n de c\u00f3mo funcionan los enzimas, y tambi\u00e9n es necesario para poder avanzar en las aplicaciones tecnol\u00f3gicas en biodetecci\u00f3n y electr\u00f3nica molecular,\u201d explica Pau Gorostiza, responsable del grupo de Nanosondas y Nanoconmutadores del IBEC junto con Fausto Sanz. \u201cLos m\u00e9todos para medir la TE a nivel de mol\u00e9culas individuales nos ayudar\u00e1n a resolver variaciones temporales en la actividad enzim\u00e1tica que pueden relacionarse con cambios conformacionales para permitir la m\u00e1xima miniaturizaci\u00f3n de los nanodispositivos.\u201d<\/p>\n

Pau y el estudiante de doctorando Juan Manuel Art\u00e9s, primer autor del estudio, tambi\u00e9n han participado recientemente en un proyecto encabezado por Concepci\u00f3 Rovira y Jaume Veciana del Instituto de Ciencia de Materiales de Barcelona(ICMAB-CSIC). Han caracterizado un conmutador molecular robusto en una soluci\u00f3n que opera con voltajes muy bajos, puede formar patrones al aplicar corriente el\u00e9ctrica y tiene una estabilidad a largo plazo, una reversibilidad y una reproducibilidad extremadamente elevadas. \u201cEste conmutador es una plataforma muy prometedora para usar en dispositivos de memoria,\u201d dice Pau. \u201cPor ejemplo, en un CD cubierto con esta mol\u00e9cula, los bits se pueden \u2018escribir\u2019 electroqu\u00edmicamente (con la aplicaci\u00f3n de voltajes bajos con un cable cerca de la superficie en determinadas condiciones) y \u2018leer\u2019 \u00f3pticamente (midiendo la absorci\u00f3n o la fluorescencia) o magn\u00e9ticamente.\u201d Sus resultados fueron publicados ayer en Nature Chemistry.<\/p>\n","protected":false},"excerpt":{"rendered":"

Investigadores del IBEC han encontrado una forma de medir la tasa de transferencia de electrones \u2013un importante proceso que es esencial en muchos procesos qu\u00edmicos y biol\u00f3gicos como la respiraci\u00f3n celular y la fotos\u00edntesis \u2013 a nivel de mol\u00e9culas individuales. <\/p>\n","protected":false},"author":4,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[94],"tags":[],"post_formats":[],"class_list":["post-5612","post","type-post","status-publish","format-standard","hentry","category-noticias-institucionales"],"yoast_head":"\nDos art\u00edculos para el grupo de Nanosondas - 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\/dos-articulos-para-el-grupo-de-nanosondas\/\" \/>\n<meta property=\"og:locale\" content=\"es_ES\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Dos art\u00edculos para el grupo de Nanosondas - 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