title: Real-time study of the modification of the peptide bond by atomic calcium.
abstract: Strong chemical interaction between bacterial surface protein layers and calcium atoms deposited in situ on top was revealed by means of photoemission spectroscopy. The interaction appears to mainly happen at the oxygen site of the peptide bonds and involves a large charge transfer from Ca 4s states into the peptide backbone. Chemical kinetics of this reaction was characterized using time-dependent valence band photoemission, and the reaction rate constant was determined.
authors.affiliation: Institut für Festkörperphysik, Technische Universität Dresden, D-01062 Dresden, Germany.
authors.forename: Kurt
authors.initials: K
authors.lastname: Kummer
authors.forename: Denis V
authors.initials: DV
authors.lastname: Vyalikh
authors.forename: Anja
authors.initials: A
authors.lastname: Blüher
authors.forename: Victor
authors.initials: V
authors.lastname: Sivkov
authors.forename: Volodymyr V
authors.initials: VV
authors.lastname: Maslyuk
authors.forename: Thomas
authors.initials: T
authors.lastname: Bredow
authors.forename: Ingrid
authors.initials: I
authors.lastname: Mertig
authors.forename: Michael
authors.initials: M
authors.lastname: Mertig
authors.forename: Serguei L
authors.initials: SL
authors.lastname: Molodtsov
mesh_terms: D001407:Bacillus; D001426:Bacterial Proteins / Q000737:chemistry* / Q000378:metabolism; D002118:Calcium / Q000737:chemistry* / Q000378:metabolism; D007700:Kinetics; D008958:Models, Molecular; D008968:Molecular Conformation; D010455:Peptides / Q000737:chemistry*; D056951:Photoelectron Spectroscopy
chemical_list: D001426:Bacterial Proteins; D010455:Peptides; D002118:Calcium