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A comparison of the effect of ionizing radiation on peptide-bound and free amino acids in the solid state

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Dose,  Klaus
Radiation Biophysics Group, Max Planck Institute of Biophysics, Max Planck Society;

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Brand,  M.C.
Radiation Biophysics Group, Max Planck Institute of Biophysics, Max Planck Society;

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Citation

Dose, K., & Brand, M. (1971). A comparison of the effect of ionizing radiation on peptide-bound and free amino acids in the solid state. Biophysik, 7(2), 146-151. doi:10.1007/BF01190148.


Cite as: https://hdl.handle.net/21.11116/0000-0008-EAC1-6
Abstract
Irradiation of thermal polymers ofα-amino acids with X-rays in the solid state produces a significantly increased destruction of tryptophan, histidine, cystine, lysine and methionine as compared with the response of constituent amino acids in proteins. These results are discussed with respect to related results obtained by irradiation of dry films of amino acid mixtures which indicate an even stronger energy or charge transfer towards the four amino acids mentioned. The results are also discussed with respect to the radiation sensitivity of constituent amino acids in proteins and the inactivation of enzymes. /
Untersuchungen an thermischen Polymeren vonα-Aminosäuren in festem Zustand zeigen, daß in diesen insbesondere Tryptophan, Histidin, Cystin, Lysin und Methionin eine höhere Strahlenempfindlichkeit als in den bisher untersuchten Proteinen aufweisen. Diese Ergebnisse werden verglichen mit ähnlichen Untersuchungen an Filmen von Aminosäuremischungen, die in noch stärkerem Umfang auf einen beträchtlichen Energietransfer oder Chargetransfer in Richtung auf die vier genannten Aminosäuren schließen lassen. Die Ergebnisse werden auch in Hinsicht auf die Strahlenempfindlichkeit von Aminosäuren in Proteinen und auf die Inaktivierung von Enzymen diskutiert.