JUNB is a gene that encodes a protein belonging to the Jun family of transcription factors. It plays a crucial role in regulating gene expression, particularly in response to various cellular signals. This gene is involved in processes such as cell proliferation, differentiation, and apoptosis, making it important for normal cellular function. The JUNB protein interacts with other proteins and DNA to influence the activity of specific genes. It is particularly significant in the context of the immune system and has been studied for its role in cancer and other diseases. Understanding JUNB can provide insights into various biological processes and potential therapeutic targets.