Enables DNA-binding transcription activator activity, RNA polymerase II-specific; RNA polymerase II cis-regulatory region sequence-specific DNA binding activity; and protein domain specific binding activity. Involved in cellular response to virus; positive regulation of interleukin-6 production; and positive regulation of transcription by RNA polymerase II. Acts upstream of or within cell maturation; mature B cell differentiation; and positive regulation of transcription, DNA-templated. Located in nucleus. Is expressed in several structures, including embryo mesenchyme; genitourinary system; nervous system; sensory organ; and thymus. Orthologous to human POU2F2 (POU class 2 homeobox 2). [provided by Alliance of Genome Resources, Apr 2022]