Fig. 3: Alternative antigen sequences.

a Global post-translational modification (PTM) enrichment in basal and IFN-α-treated conditions. A detailed list is provided in Supplementary Data 8. b Validated PTM peptides with representation of the native and modified aa (PTM in red). A detailed list is provided in Supplementary Data 3. c Peptide alignment of INS and INS-205 mRNA variant. The sequence of the HLA-eluted variant is indicated in red and corresponds to a sequence spliced out as compared to the canonical INS mRNA.