Enables RNA polymerase II-specific DNA-binding transcription factor binding activity. Involved in negative regulation of neuron apoptotic process and spermatogenesis. Predicted to be located in several cellular components, including chromatin; neuron projection; and nucleus. Predicted to be part of RNA polymerase II transcription regulator complex. Orthologous to human POU4F1 (POU class 4 homeobox 1). [provided by Alliance of Genome Resources, Apr 2022]