GUYCYL GLYCYL GLYCINE 



/ 



CHuaRACETYL DL ALANINE 



Fig. 5. Some illustrative patterns of resonances of x-irradiated peptides (second 

 derivative curves). The markers at the base are spaced 68 gauss apart. The 

 observation frequency is 9 kMc. From G. McCormick and W. Gordy (5).) 



GLYCYL DL VALINE 



\ 



\ 



\ 



Fig. 6. Hyperfine pattern (second derivative curve) of the radical produced by 



x-irradiation of glycyl DL-valine. Marker spacing is 68 gauss. Observation 



frequency, 9 kMc. (From G. McCormick and W. Gordy (5).) 



