Transport protein particle (TRAPP) is a multimeric protein complex regulating membrane trafficking pathways. Here the authors show that TRAPPC4, a core subunit of TRAPP complex, is required for RAB11-mediated recycling of PD-L1, affecting T-cell-mediated anti-tumor immune responses.
- Yimeng Ren
- Yun Qian
- Jing-Yuan Fang
