1AKJ:
reference: Crystal structure of the complex between human CD8alpha(alpha) and HLA-A2., Gao GF, Tormo J, Gerth UC, Wyer JR, McMichael AJ, Stuart DI, Bell JI, Jones EY, Jakobsen BK, Nature 1997 Jun 5;387(6633):630-4. PMID: 9177355

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