The enzyme contains two major domains, responsible for the aminotransferase and synthase activity, respectively. The amidotransferase domains are located away from the tetramer interfaces and are not affected by the oligomeric state.
This enzyme has two major functional domains, one for aminotransferase and the other for synthase activities. The amidotransferase domains are situated at the periphery of the tetramer structure and remain unaffected by its oligomeric state.