Transcriptional regulator involved in the positive regulation of the expression of the gene cluster that mediates the biosynthesis of asperlin, a polyketide showing anti-inflammatory, antitumor and antibiotic activities. Strongly diminishes the production of asperlin. The predicted gene AN9221 has been split into 2 genes: alnG and alnR. The predicted gene AN9221 has been split into 2 genes: alnG and alnR.