Table 1.

Examples of post‐translational modifications (PTMs) monitored by MHC class I molecules

PTMs	Sites of modifications	Crystallized MHC class I alleles	References
Phosphorylation	Ser, Thr	HLA‐A2	10, 16, 17
O‐linked glycosylation	Ser, Thr	H‐2Kb	11, 12, 18, 20
Acetylation	N terminus	HLA‐B39	24, 56
Formylation	N terminus	H2‐M3	45, 57
N‐myristoylation	N‐terminal Gly	Mamu‐B*098	6, 7, 8
Citrullination	Arg	HLA‐B27	22, 58
Methylation	Arg	Not reported	59
Deamidation	Asn	Not reported	60
Cysteinylation	Cys	Not reported	61