Predicted to enable DNA-binding transcription activator activity, RNA polymerase II-specific and RNA polymerase II cis-regulatory region sequence-specific DNA binding activity. Acts upstream of or within skeletal muscle cell differentiation. Predicted to be located in nucleoplasm. Predicted to be pa
rt of RNA polymerase II transcription regulator complex. Predicted to be active in nucleus. Is expressed in several structures, including alimentary system; cardiovascular system; genitourinary system; nervous system; and sensory organ. Orthologous to human HLF (HLF transcription factor, PAR bZIP family member). [provided by Alliance of Genome Resources, Jul 2025]
Enables DNA-binding transcription activator activity, RNA polymerase II-specific; RNA polymerase II cis-regulatory region sequence-specific DNA binding activity; and protein heterodimerization activity. Involved in mRNA transcription by RNA polymerase II; myoblast fate commitment; and positive regul
ation of cold-induced thermogenesis. Acts upstream of or within several processes, including multicellular organismal-level iron ion homeostasis; norepinephrine metabolic process; and surfactant homeostasis. Located in cytoplasm and nuclear speck. Part of transcription regulator complex. Is expressed in several structures, including alimentary system; cardiovascular system; genitourinary system; nervous system; and respiratory system. Used to study newborn respiratory distress syndrome. Human ortholog(s) of this gene implicated in familial erythrocytosis 4; lung non-small cell carcinoma; polycythemia; and pulmonary hypertension. Orthologous to human EPAS1 (endothelial PAS domain protein 1). [provided by Alliance of Genome Resources, Jul 2025]