Transcription factor involved in the cell wall damage response. Acts with ADA2 to promote cell wall integrity. Required for expression of numerous cell wall biosynthesis inhibitor caspofungin-responsive genes. Plays a key role in adherence, hyphal development, and virulence. Leads to sensitivity to caspofungin and affects expression of many genes including caspofungin-responsive genes. Results in hyphal defect during C.elegans infection and exhibits attenuated virulence in flies and mice models for candidiasis.