The human enzyme listed in family a, too, may be able to transaminate kynurenine and is sometimes annotated as kynurenine aminotransferase II.
The yeast gene listed listed in family a encodes a transaminase with broad substrate specificity; even though it apparently prefers 2-aminoadipate as a substrate, it is annotated as aromatic aminoacid aminotransferase.

Finally, the enzyme from T. thermophilus included in family b is a broad-substrate specificity aminotransferase not closely realted to the subgroup of eukariotic enzymes.