l-methionine , dl-methionine sulfoxide , l-ethionine , l-cysteic acid , l-aspartic acid , l-asparagine , l-glutamic acid , l-glutamine , d-alanine , beta-alanine , l-ornithine and l-lysine had little or no effect on any activities of the enzyme preparation .
C0061472
l-glutamic acid
C0017797
l-glutamine