Sliz et al. (2003 ▸) collected data at 100 K from crystals of three different proteins: the ternary US2–HLA-A2–Tax peptide complex (referred to as ‘US2’), HLA-A2 with a bound melanoma decamer peptide (referred to as ‘HLA’) and viral polymerase λ3 from reovirus (referred to as ‘λ3’). This evidence concerns the gene CNTN2 and melanoma.