Olf1/EBF-associated zinc finger protein (OAZ) is a transcription factor that can act as either an activator or a repressor depending on the context. OAZ plays a central role in BMP signaling and olfactory neurogenesis. It associates with SMADs in response to BMP2 leading to activate transcription of BMP target genes. OAZ also acts as a transcriptional repressor via its interaction with EBF1, a transcription factor involved in terminal olfactory receptor neurons differentiation. OAZ is involved in olfactory neurogenesis by participating in a developmental switch that regulates the transition from differentiation to maturation in olfactory receptor neurons. Additionally, OAZ controls proliferation and differentiation of neural precursors in cerebellar vermis formation [taken from the Universal Protein Resource (UniProt) www.uniprot.org/uniprot/Q2M1K9].