Predicted to enable DNA-binding transcription factor activity, RNA polymerase II-specific and RNA polymerase II cis-regulatory region sequence-specific DNA binding activity. Predicted to be involved in immune system process and regulation of transcription by RNA polymerase II. Predicted to be located in cytosol. Predicted to be active in nucleus. Is expressed in several structures, including alimentary system; central nervous system; genitourinary system; hemolymphoid system gland; and sensory organ. Human ortholog(s) of this gene implicated in immunodeficiency 65. Orthologous to human IRF9 (interferon regulatory factor 9). [provided by Alliance of Genome Resources, Apr 2022]