γδ T cells are known to recognize phosphoantigen in the context of butyrophilins (BTN), yet the molecular rules underlying this phenomenon are unclear. Here, the authors demonstrate that a distinct topology of B30.2 and IgV domains within BTN3A complexes promotes antigen sensing and that the juxtamembrane region controls BTN complex formation.
- Mohindar M. Karunakaran
- Hariharan Subramanian
- Thomas Herrmann