Partial reactivities observed in the hydrogen abstraction reactions of hydroxyl radicals from aliphatic amino acids
Masuda, T.; Nakano, S.; Yoshihara, K.; Kondo, M.
Journal of Radiation Research 17(2): 63-68
ISSN/ISBN: 0449-3060 PMID: 957279 Accession: 006066744
Rate constants for the H abstraction reactions of hydroxyl radicals from aliphatic amino acids were determined by the p-nitrosodimethylaniline method in .gamma.-irradiated aqueous solutions. Partial reactivities for the H abstraction reactions were estimated for C-H bonds found in molecules of aliphatic amino acids, on the basis of the rate constants of glycine, alanine, valine and leucine and also by assumption of the linear relationship between the position of the C atom and natural logarithm of the difference in activation energy. The calculated rate constants from the estimated partial reactivities were in good agreement with the observed ones.