Deutsch
 
Hilfe Datenschutzhinweis Impressum
  DetailsucheBrowse

Datensatz

DATENSATZ AKTIONENEXPORT

Freigegeben

Zeitschriftenartikel

NEXAFS spectroscopy of homopolypeptides at all relevant absorption edges: polyisoleucine, polytyrosine, and polyhistidine

MPG-Autoren
/persons/resource/persons211638

Grunze,  Michael
Cellular Biophysics, Max Planck Institute for Medical Research, Max Planck Society;

Externe Ressourcen
Volltexte (beschränkter Zugriff)
Für Ihren IP-Bereich sind aktuell keine Volltexte freigegeben.
Volltexte (frei zugänglich)
Es sind keine frei zugänglichen Volltexte in PuRe verfügbar
Ergänzendes Material (frei zugänglich)
Es sind keine frei zugänglichen Ergänzenden Materialien verfügbar
Zitation

Zubavichus, Y., Shaporenko, A., Grunze, M., & Zharnikov, M. (2007). NEXAFS spectroscopy of homopolypeptides at all relevant absorption edges: polyisoleucine, polytyrosine, and polyhistidine. The Journal of Physical Chemistry B, 111(33), 9803-9807. doi:10.1021/jp073922y.


Zitierlink: https://hdl.handle.net/21.11116/0000-0001-9C6F-4
Zusammenfassung
Carefully calibrated high-resolution low-noise near-edge X-ray absorption fine structure spectra of three homopolypetides, viz., polyisoleucine, polytyrosine, and polyhistidine at the C, N, and O K-edges, are compared with the respective spectra of parent amino acids and glycine-derived cyclic dipeptide, 2,5-diketopiperazine. An assignment of the spectral features related to the nitrogen and oxygen atoms constituting the peptide bond is suggested on the basis of a comparative analysis of the experimental spectra as well as theoretical calculations for 2,5-diketopiperazine within the real-space multiple-scattering formalism. A splitting of the pi*-feature in the N K-edge spectra is identified, which is probably sensitive to the dominant conformation type of the peptide molecule (i.e., alpha-helix vs beta-sheet).