{"id":959,"date":"2024-01-03T19:18:10","date_gmt":"2024-01-03T18:18:10","guid":{"rendered":"https:\/\/sites.unimi.it\/apisgroup\/?p=959"},"modified":"2024-09-12T13:08:44","modified_gmt":"2024-09-12T11:08:44","slug":"non-conventional-peptide-self-assembly-into-a-conductive-supramolecular-rope","status":"publish","type":"post","link":"https:\/\/sites.unimi.it\/apisgroup\/2024\/01\/03\/non-conventional-peptide-self-assembly-into-a-conductive-supramolecular-rope\/","title":{"rendered":"Non-Conventional Peptide Self-Assembly into a Conductive Supramolecular Rope"},"content":{"rendered":"\n<p class=\"wp-block-paragraph\">Structures composed of alternating \u03b1 and \u03b2 amino acids can give rise to peculiar secondary structural motifs, which could self-assemble into complex structures of controlled geometries. This work describes the self-assembly properties of an \u03b1,\u03b2-peptide, containing three units of syn H2-(2-F-Phe)-h-PheGly-OH, able to self-organize on surfaces into a fascinating supramolecular rope. This material was characterized by AFM, electronic conduction and fluorescence measurements. Molecular dynamics simulations showed that this hexapeptide can self-assemble into an antiparallel \u03b2-sheet layer, stabilized by intermolecular H-bonds, which, in turn, can self-assemble into many side-by-side layers, due to \u03c0-\u03c0 interactions. As a matter of fact, we demonstrated that in this system, the presence of aromatic residues at the intramolecular interface promoted by the alternation of \u03b1,\u03b2-amino-acids in the primary sequence, endorses the formation of a super-secondary structure where the aromatic groups are close to each other, conferring to the system good electron conduction properties. This work demonstrates the capability and future potential of designing and fabricating distinctive nanostructures and efficient bioelectronic interfaces based on an \u03b1,\u03b2-peptide, by controlling structure and interaction processes beyond those obtained with \u03b1- or \u03b2-peptides alone.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><a href=\"https:\/\/www.mdpi.com\/2079-4991\/13\/2\/333\">Nanomaterials 2023, 13, 333<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Structures composed of alternating \u03b1 and \u03b2 amino acids can give rise to peculiar secondary structural motifs, which could self-assemble into complex structures of controlled geometries. This work describes the self-assembly properties of an&#46;&#46;&#46;<\/p>\n","protected":false},"author":1,"featured_media":960,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[6,109,7],"tags":[137,136,138],"class_list":["post-959","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-application","category-peptides","category-amino-acid","tag-conductive","tag-self-assembly","tag-supramolecular-rope"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v26.8 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Non-Conventional Peptide Self-Assembly into a Conductive Supramolecular Rope - APIS group<\/title>\n<meta name=\"description\" content=\"This work demonstrates the capability and future potential of designing and fabricating distinctive nanostructures and efficient bioelectronic interfaces based on an \u03b1,\u03b2-peptide, by 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