only 2-oxoglutarate could function as the keto acid substrate whereas several amino acids besides 4-aminobutyrate ( beta-alanine , alpha-l-alanine , l-aspartate and l-arginine ) could apparently act as substrate although the possible presence of other amino acid:2-oxoglutarate aminotransferases was not excluded .
C0000392
beta-alanine
C0001898
alanine