Used in immunological research to study B cell maturation and survival pathways. Serves as a critical reagent in assays evaluating interactions between BCMA and its ligands, such as APRIL and BAFF, which are involved in autoimmune diseases and B-cell malignancies. Facilitates the development and testing of therapeutic antibodies and biologics targeting the BCMA pathway, particularly in multiple myeloma and other plasma cell disorders. The His Tag allows for easy detection and purification in experimental settings, making it valuable in protein binding studies, ELISA, and surface plasmon resonance (SPR) applications.