Transcription factor that acts as a key player in the regulatory circuit that integrates secondary metabolism and cellular response to oxidative stress (By similarity). Regulates the genes involved in development, as well as osmotic, oxidative, and cell wall stresses (PubMed:27706915). Participates in the caspofungin paradoxical effect (CPE), where fungi grow beyond the minimum inhibitory concentration of caspofungin (PubMed:27706915). Plays a role in virulence (PubMed:27706915). Expression is induced in during osmotic stress and repressed in the absence of the mitogen-activated protein kinase sakA (PubMed:27706915). Expression is also highly induced at low and high caspofungin concentrations (PubMed:27706915). Increases sensitivity to osmotic and oxidative stresses, but also to cell wall-damaging agents such as Congo red or iprodione (PubMed:27706915). Shows increased resistance to low caspofungin concentrations, but is more sensitive to higher caspofungin concentrations (PubMed:27706915). Leads to attenuated virulence (PubMed:27706915). Belongs to the bZIP family. ATF subfamily.