at the cellular level , these amino acids reduced the amount of acetohydroxy acid synthetase in cells grown with l-homoserine and competed with dl-homoserine-4- ( 14 ) c for entrance into the extractable cell pool . l-isoleucine also antagonized the conversion of l-homoserine to alpha-amino-n-butyric acid .
C0002520
amino acids
C0019892
homoserine