{"id":5611,"date":"2011-03-28T07:47:45","date_gmt":"2011-03-28T07:47:45","guid":{"rendered":"http:\/\/ibecbarcelona.eu\/new\/dos-articles-per-al-grup-de-nanosondes\/"},"modified":"2015-01-08T16:59:37","modified_gmt":"2015-01-08T16:59:37","slug":"dos-articles-per-al-grup-de-nanosondes","status":"publish","type":"post","link":"https:\/\/ibecbarcelona.eu\/ca\/dos-articles-per-al-grup-de-nanosondes\/","title":{"rendered":"Dos articles per al grup de Nanosondes"},"content":{"rendered":"

En un estudi publicat recentment en ACS Nano, membres del grup de Nanosondes i Nanocommutadors de l\u2019IBEC descriuen com varen fer servir un microscopi electroqu\u00edmic d\u2019efecte t\u00fanel per mesurar la \u2018constant de deca\u00efment amb la dist\u00e0ncia\u2019 que caracteritza la taxa de TE en prote\u00efnes redox (prote\u00efnes en les que es d\u00f3na la TE). L\u2019an\u00e0lisi de les mesures de la constant de deca\u00efment revela difer\u00e8ncies entre l\u2019estat redu\u00eft i l\u2019estat oxiditzat d\u2019una prote\u00efna, el que pot ser rellevant per al control de taxes de TE en enzims i cadenes biol\u00f2giques de transport d\u2019electrons.<\/p>\n

\u201cL\u2019estudi de la TE \u00e9s indispensable per la comprensi\u00f3 de com funcionen els enzims, i tamb\u00e9 \u00e9s necessari per poder avan\u00e7ar en les aplicacions tecnol\u00f2giques en biodetecci\u00f3 i electr\u00f2nica molecular,\u201d explica en Pau Gorostiza, responsable del grup de Nanosondes i Nanocommutadors de l\u2019IBEC juntament amb en Fausto Sanz. \u201cEls m\u00e8todes per mesurar la TE a nivell de mol\u00e8cules individuals ens ajudaran a resoldre variacions temporals en l\u2019activitat enzim\u00e0tica que poden relacionar-se amb canvis conformacionals per permetre la m\u00e0xima miniaturitzaci\u00f3 dels nanodispositius.\u201d<\/p>\n

Pau i l\u2019estudiant de doctorat Juan Manuel Art\u00e9s, primer autor de l\u2019estudi, tamb\u00e9 han participat recentment en un projecte encap\u00e7alat per Concepci\u00f3 Rovira i Jaume Veciana de l\u2019Institut de Ci\u00e8ncia de Materials de Barcelona (ICMAB-CSIC). Han caracteritzat un commutador molecular robust en una soluci\u00f3 que opera amb voltatges molt baixos, pot formar patrones en aplicar-hi corrent el\u00e8ctric i t\u00e9 una estabilitat a llarg termini, una reversibilitat i una reproductibilitat extremadament elevades. \u201cAquest commutador \u00e9s una plataforma molt prometedora per fer servir en dispositius de mem\u00f2ria,\u201d diu en Pau. \u201cPer exemple, en un CD cobert d\u2019aquesta mol\u00e8cula, els bits es poden \u2018escriure\u2019 electroqu\u00edmicament (amb l\u2019aplicaci\u00f3 de voltatges baixos amb un cable prop de la superf\u00edcie en determinades condicions) i \u2018llegir\u2019 \u00f2pticament (mesurant l\u2019absorci\u00f3 o la fluoresc\u00e8ncia) o magn\u00e8ticament.\u201d Els seus resultats van ser publicats ahir a Nature Chemistry.<\/p>\n","protected":false},"excerpt":{"rendered":"

Investigadors de l\u2019IBEC han trobat una forma de mesurar la taxa de transfer\u00e8ncia d\u2019electrons \u2013un important proc\u00e9s que \u00e9s essencial en molts processos qu\u00edmics i biol\u00f2gics com la respiraci\u00f3 cel\u00b7lular i la fotos\u00edntesi \u2013 a nivell de mol\u00e8cules individuals.<\/p>\n","protected":false},"author":4,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[98],"tags":[],"post_formats":[],"class_list":["post-5611","post","type-post","status-publish","format-standard","hentry","category-noticies-institucionals"],"yoast_head":"\nDos articles per al grup de Nanosondes - 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\/ca\/dos-articles-per-al-grup-de-nanosondes\/\" \/>\n<meta property=\"og:locale\" content=\"ca_ES\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Dos articles per al grup de Nanosondes - 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