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. Author manuscript; available in PMC: 2014 Aug 12.
Published in final edited form as: Redox Rep. 2014 Jan 3;19(2):80–86. doi: 10.1179/1351000213Y.0000000078

Figure 4.

Figure 4

Protection of glutamine synthetase by amino acids. The amino acid concentration was 3.0 mM and that of MnCl2 was 1.0 mM. (A) Methionine and its oxidation products. The irradiation dose was 10 kGy. (B) d and l amino acids. The irradiation dose was 20 kGy. (C) Methionine and its amino or carboxyl modified forms. The irradiation dose was 20 kGy.