the mutant synthesized c ( 14 ) -labeled pigment from d-glucose-u-c ( 14 ) and from each of four amino acids ( glycine-1-c ( 14 ) , l-phenylalanine-u-c ( 14 ) , l-proline-u-c ( 14 ) , and l-lysine-u-c ( 14 ) .
C0002520
amino acids
C0017890
glycine