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AN E.P.R. STUDY OF PEPTIDES AFTER U.V. IRRADIATION *
Author(s) -
MEYBECK ALAIN,
WINDLE JOHN J.
Publication year - 1969
Publication title -
photochemistry and photobiology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.818
H-Index - 131
eISSN - 1751-1097
pISSN - 0031-8655
DOI - 10.1111/j.1751-1097.1969.tb07215.x
Subject(s) - radical , chemistry , amino acid , irradiation , aqueous solution , peptide , aromatic amino acids , solid state , stereochemistry , biochemistry , organic chemistry , physics , nuclear physics
— Various peptides of Gly, Ala, Phe, Tyr, and Trp have been irradiated with U.V. light in the solid state or in frozen aqueous solution. The radicals produced were studied by E.P.R. spectroscopy at low temperature and at room temperature. Radicals seem to occur preferentially on Gly or Ala when in the C ‐terminal position and there is evidence for a photosensitization of these amino acids by aromatic amino acids.