DIG1 and DIG2 are negative regulators of the filamentation and pheromone induced mating program. DIG1 and DIG2 inhibit the transcriptional activity of STE12 by direct protein-protein interaction. DIG1 colocalizes to promoters with STE12 and redistributes with it during induction of filamentation (by butanol) or mating (by pheromone) to program specific genes, but binding of DIG1 to STE12 is reduced by pheromone treatment. Forms a complex with DIG2, STE12 and either FUS3 or KSS1. The interaction of FUS3 with STE12 depends on the presence of both DIG1 and DIG2. STE12 is lost from FUS3/DIG1/DIG2 complex after pheromone treatment. DIG1 and DIG2 have also been reported to interact with CLN1 and CLN2. Phosphorylated by FUS3 and KSS1, in a pheromone-stimulated manner. Phosphorylation reduces the affinity for STE12. Present with 5000 molecules/cell in log phase SD medium (5480 according to TAP-tag study).