optimal growth in the basal medium was obtained in the presence of two purified peptides from crystalline ribonuclease , one of which has the amino acid sequence threonine - threonine - glutamine - alanine - asparagine-lysine , and the other lysine-glutamic acid-threonine-alanine-alanine-alanine-lysine .
C0017797
glutamine
C0061472
glutamic