Transcription factor; part of the gene cluster that mediates the biosynthesis of the diterpene ent-pimara-8(14),15-diene (PD) (PubMed:22506079, PubMed:27098256). Acts as a positive regulator for the cluster gene (PubMed:22506079). Down-regulates the expression of the penicillin gene cluster, two putative polyketide clusters, and one putative nonribosomal peptide cluster (PubMed:22506079).