Used in immunological research to study Fc gamma receptor-mediated signaling pathways. Facilitates the development of therapeutic antibodies by enabling binding assays and functional characterization of immune effector cells. Employed in protein-protein interaction studies, particularly in evaluating monoclonal antibody affinity and specificity. Supports assay development for autoimmune disease and cancer immunotherapy research. The His Tag allows for easy purification and detection in recombinant expression systems.