the peptides were found to be composed of the following amino acids : 2 glutamic acid or glutamine , 2 proline , 1 glycine , 1 methionine or methionine sulfoxide , 2 leucine , 1 tyrosine , 1 lysine , 1 histidine , 1 or 2 tryptophan .
C0061472
glutamic
C0017797
glutamine