amino acid analysis showed 21 aspartic acid or asparagine , 19 threonine , 12 serine , 26 glutamic acid or glutamine , 15 proline , 16 glycine , 14 alanine , 15 valine , 4 methionine , 12 isoleucine , 28 leucine , 7 tyrosine , 7 phenylalanine , 5 histidine , 14 lysine , 16 arginine , 2 tryptophan , no -- ss -- bonds or free -- sh .
C0002520
amino acid
C0061472
glutamic acid