Enables sequence-specific DNA binding activity. Involved in several processes, including cellular response to cytokine stimulus; cellular response to exogenous dsRNA; and response to peptide hormone. Predicted to be located in cytoplasm. Predicted to be part of chromatin. Predicted to be active in nucleus. Used to study endometrial adenocarcinoma. Biomarker of allergic conjunctivitis; lung disease; respiratory syncytial virus infectious disease; and ureteral obstruction. Human ortholog(s) of this gene implicated in asthma; lung cancer (multiple); primary immunodeficiency disease; smallpox; and stomach cancer (multiple). Orthologous to human IRF1 (interferon regulatory factor 1); PARTICIPATES IN Jak-Stat signaling pathway; nuclear factor kappa B signaling pathway; p38 MAPK signaling pathway; INTERACTS WITH 1,1,1-Trichloro-2-(o-chlorophenyl)-2-(p-chlorophenyl)ethane; 2,3,7,8-tetrachlorodibenzodioxine; 2-nitrofluorene.