Transcription factor that regulates the expression of the gene clusters that mediate the biosynthesis of trypacidin, a metabolite with antiprotozoal activity and a possible role in the infection process (PubMed:26278536, PubMed:26242966). Trypacidin is toxic for human pulmonary and bronchial epithelial cells by initiating the intracellular formation of nitric oxide (NO) and hydrogen peroxide (H(2)O(2)), thus triggering host necrotic cell death (PubMed:22319557). Specifically expressed in conidia (PubMed:22319557). Expression is positively regulated by the transcription factors brlA and laeA (PubMed:26242966). Resulted in loss of trypacidin and questin production (PubMed:26242966).