Transcription factor that binds preferentially to the octamer motif (5'-ATGTTAAT-3'). May exert a regulatory function in meiotic events that are required for terminal differentiation of male germ cell (By similarity). In adult brain, expressed in the olfactory bulb, becoming specifically concentrated in the mitral cell layer. Also found in the pyramidal cell layer of the hippocampus, in the granule cell layer of the cerebellum and in the cortex. Low expression levels observed at 12 dpc in neural tube and brain. On days 15.5 and 16.5, expression levels increased and became localized specifically to the forebrain, with highest levels found in the laminar region of the forebrain cortex. Also expressed in the mitral region of the olfactory bulb. Belongs to the POU transcription factor family. Class-5 subfamily.