Enables DNA-binding transcription activator activity, RNA polymerase II-specific; protein domain specific binding activity; and sequence-specific DNA binding activity. Involved in regulation of transcription, DNA-templated and response to cytokine. Located in nucleus. Human ortholog(s) of this gene implicated in embryonal carcinoma and seminoma. Orthologous to several human genes including POU5F1 (POU class 5 homeobox 1). [provided by Alliance of Genome Resources, Apr 2022]