of 27 amino acids , only l-asparagine , l-glutamic acid , l-aspartic acid , l-glutamine , l-proline , and l-tyrosine supported growth sufficient to give a viscous supernatant solution . l-proline and l-tyrosine , singly or combined , fulfilled the carbon , nitrogen , and energy requirements for growth and slime production .
C0002520
amino acids
C0061472
l-glutamic acid