1. Real-Time Study of the Modification of the Peptide Bond by Atomic Calcium
- Author
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Ingrid Mertig, Serguei L. Molodtsov, Victor V. Sivkov, Thomas Bredow, Michael Mertig, Denis V. Vyalikh, Anja Blüher, V. V. Maslyuk, and Kurt Kummer
- Subjects
Models, Molecular ,In situ ,Photoemission spectroscopy ,Photoelectron Spectroscopy ,Inorganic chemistry ,Molecular Conformation ,chemistry.chemical_element ,Bacillus ,Chemical interaction ,Calcium ,Oxygen ,Surfaces, Coatings and Films ,Chemical kinetics ,Kinetics ,Crystallography ,Reaction rate constant ,Bacterial Proteins ,chemistry ,Materials Chemistry ,Peptide bond ,Physical and Theoretical Chemistry ,Peptides - 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.
- Published
- 2011
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