Transcription factor that regulates the development of the g2 pharyngeal gland cells and pharyngeal gland function and thereby is required for feeding (PubMed:18927627). Required for the expression of a number of genes in the pharyngeal gland, possibly by binding to the E box motif (5'-CANNTG-3') in the promoter region of these genes (PubMed:18927627). Positively regulates the expression of genes encoding mucin-like proteins, which lubricate the pharyngeal tract to ensure efficient passage of the bacterial food source (PubMed:18927627). Exhibits pharyngeal gland-specific positive autoregulation activity (PubMed:17049341). Expressed in the gland cells of the pharynx and weakly in the pharyngeal neuron.