Epas1 - endothelial PAS domain protein 1

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 regulation of cold-induced thermogenesis. Acts upstream of or within several processes, including animal organ development; regulation of transcription by RNA polymerase II; 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, Apr 2022]