amino acid analysis gave the following composition as residues : 26 aspartic acid or asparagine , 14 threonine , 17 serine , 27 glutamic acid or glutamine , 24 proline , 19 glycine , 25 alanine , 17 valine , 8 methionine , 14 isoleucine , 31 leucine , 5 tyrosine , 9 phenylalanine , 6 histidine , 25 lysine , 15 arginine , 4 half cystine ( no free sulfhydryls ) and no tryptophan , giving a total of 286 residues .
C0002520
amino acid
C0017797
glutamine