how the ( 14 ) c-d-amino acid gets to ( 14 ) c-l-isomer is not known , but finding significant proportions of unlabeled d-alanine in plants treated with both the labeled l-leucine and d-lysine suggested that formation of the alpha-keto-acid analog and subsequent reamination was possibly an important route .
C0002520
amino acid
C0001898
alanine