Transcription factor; part of the gene cluster that mediates the biosynthesis of chaetoglobosin A which has a unique inhibitory activity against actin polymerization in mammalian cells (PubMed:23611317, PubMed:33622536). Chaetoglobosin A and its intermediates are involved in the morphological differentiation of C.globosum (PubMed:33622536). Binds directly to asymmetric direct repeats present in the promoters of the chaetoglobosin A cluster genes (PubMed:33622536). Drastically reduces the transcription of chaetoglobosin A biosynthetic genes and completely abolishes chaetoglobosin A production (PubMed:33622536). Abolishes sporuration (PubMed:33622536).