Provided below are ELISA kits targeting brain expressed X-linked 4, a human protein encoded by BEX4. This protein is 120 amino acids long, with a mass of 14.1 kDa, and is a member of the BEX family. This is reported to be a cytoplasmic and nuclear protein. Other alias names for this protein include: protein BEX4, BEX family member 4, BEX1-like protein 1, brain expressed X-linked-like 1, and BEX family member 4.