Nivolumab is an IgG4 kappa immunoglobulin that is selective for PD-1, an immune-checkpoint receptor expressed on activated T-cells, monocytes, B-cells, natural killer (NK) T-cells, and dendritic cells [12
]. This monoclonal is produced in Chinese hamster ovary cells by recombinant DNA technology. Nivolumab is an immuno-oncology drug.
Annotated peptide sequences for this antibody are available from its IMGT/mAb-DB record.
Sequence analysis of the light and heavy chain variable region peptides of nivolumab shows exact matches with claimed peptide sequences of monoclonal 5C4 contained in patent WO2006121168 [10