Used in immunological research to study protein-protein interactions involving Nectin-4, a key receptor in cell adhesion and signaling. The Fc tag enables easy detection and purification, making it valuable in binding assays and therapeutic development targeting Nectin-4 pathways. Commonly applied in the development and testing of antibody-based drugs, especially in oncology and infectious disease research. Supports assay development for evaluating drug candidates in non-human primate models due to its species-specific origin.