Properties of the HLA-I peptidomes data set obtained from seven cell lines.
A, Number of HLA-I peptides identified in each peptidome sample. B, Length distribution of HLA-I peptides. C, Intensities of HLA peptides span over four orders of magnitudes. D, Identification score distribution of HLA-I peptides for each of the charge states. E, Number of HLA-I peptides that were identified with the different charge states.