Table I. Comparison between the actual and expected joint frequency of positively charged amino acids (R and K) at positions 3 and 6 among the HLA-B07:02 ligands identified by HLA peptidome deconvolution in three samples or retrieved from IEDB
SamplesNumber of HLA-B07:02 Ligandsf3(+)f6(+)f36(+,+)Expected Joint Frequencyp Value
B cell233995647846195.43 × 10−63
HCC1937787186117727.66 × 10−8
JY843174141929.14 × 10−7
IEDB5971741082231.51.6 × 10−2