Robuta

https://www.ncbi.nlm.nih.gov/Structure/pdb/6RQM 6RQM: A blocking anti-CTLA-4 Nanobody (KN044) complexed with CTLA-4 A blocking anti-CTLA-4 nanobody (KN044)Cytotoxic T-lymphocyte protein 4 blocking anti nanobody