Predicted to enable identical protein binding activity; ornithine aminotransferase activity; and pyridoxal phosphate binding activity. Predicted to be involved in arginine catabolic process to glutamate; arginine catabolic process to proline via ornithine; and ornithine metabolic process. Located in mitochondrion. Is expressed in adult head; adult heart; amnioserosa; embryonic/larval fat body; and yolk nucleus. Human ortholog(s) of this gene implicated in gyrate atrophy. Orthologous to human OAT (ornithine aminotransferase).