title: Absorption enhancement and conformational control of peptides by small silver clusters.
abstract: We explored experimentally and theoretically the optical properties of isolated silver trimer-dipeptide bioconjugates. The metallic moiety induces a strong enhancement of the optical absorption of the peptide. We also show that its binding to a peptide can reduce the conformational flexibility and induce transitions between secondary structures.
authors.affiliation: Université de Lyon, F-69622, Lyon, France.
authors.forename: Thibault
authors.initials: T
authors.lastname: Tabarin
authors.forename: Alexander
authors.initials: A
authors.lastname: Kulesza
authors.forename: Rodolphe
authors.initials: R
authors.lastname: Antoine
authors.forename: Roland
authors.initials: R
authors.lastname: Mitrić
authors.forename: Michel
authors.initials: M
authors.lastname: Broyer
authors.forename: Philippe
authors.initials: P
authors.lastname: Dugourd
authors.forename: Vlasta
authors.initials: V
authors.lastname: Bonacić-Koutecký
mesh_terms: D000327:Adsorption; D004151:Dipeptides / Q000737:chemistry*; D008667:Metalloproteins / Q000737:chemistry*; D008958:Models, Molecular; D017433:Protein Structure, Secondary; D018030:Silver Compounds / Q000737:chemistry*; D013057:Spectrum Analysis / Q000379:methods
chemical_list: D004151:Dipeptides; D008667:Metalloproteins; D018030:Silver Compounds; C016810:tryptophylglycine