Enables several functions, including DNA binding activity; DNA-binding transcription activator activity, RNA polymerase II-specific; and GTPase binding activity. Involved in several processes, including cellular response to estradiol stimulus; nervous system development; and regulation of gene expression. Acts upstream of or within several processes, including nervous system development; proprioception involved in equilibrioception; and suckling behavior. Located in several cellular components, including chromatin; neuron projection; and nucleus. Part of RNA polymerase II transcription regulator complex. Is expressed in several structures, including branchial arch mesenchyme; central nervous system; future brain; ganglia; and retina. Orthologous to human POU4F1 (POU class 4 homeobox 1). [provided by Alliance of Genome Resources, Apr 2022]