Effect of the areA gene on regulation of arginine catabolism in Aspergillus nidulans.

The areA gene which is known to be involved in ammonium repression in Aspergillus nidulans was found to participate in regulation of arginine catabolism. Mutations in this gene are hypostatic to mutations in arcA, suDpro and suEpro genes which are responsible for regulation of synthesis of arginine catabolic enzymes.