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The action of ionizing radiation on protein. III. Radical formation in L-phenylalanine.HCl

Flossmann, W.; Westhof, E.

International Journal of Radiation Biology and Related Studies in Physics Chemistry and Medicine 33(2): 139-149

1978

ISSN/ISBN: 0020-7616
PMID: 204591
Document Number: 135183
The radicals produced by X-irradiation in L-phenylalanine.HCl crystals have been analysed by electron-spin-resonance (e.s.r.) spectroscopy. Four radicals have been identified: the radical resulting from electron capture by the carboxylic group, the radical resulting from deamination, an hydrogen addition radical to the benzene ring, and the radical resulting from hydrogen abstraction from the methylene group bonded to Cbeta. These identifications are supported by INDO calculations.

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