>3QXA_1|Chains A, C[auth D]|HLA class II histocompatibility antigen, DR alpha chain|Homo sapiens (9606) IKEEHVIIQAEFYLNPDQSGEFMFDFDGDEIFHVDMAKKETVWRLEEFGRFASFEAQGALANIAVDKANLEIMTKRSNYTPITNVPPEVTVLTNSPVELREPNVLICFIDKFTPPVVNVTWLRNGKPVTTGVSETVFLPREDHLFRKFHYLPFLPSTEDVYDCRVEHWGLDEPLLKHWEFDA >3QXA_2|Chains B, D[auth E]|HLA class II histocompatibility antigen, DRB1-1 beta chain|Homo sapiens (9606) GDTRPRFLWQLKFECHFFNGTERVRLLERCIYNQEESVRFDSDVGEYRAVTELGRPDAEYWNSQKDLLEQRRAAVDTYCRHNYGVGESFTVQRRVEPKVTVYPSKTQPLQHHNLLVCSVSGFYPGSIEVRWFRNGQEEKAGVVSTGLIQNGDWTFQTLVMLETVPRSGEVYTCQVEHPSVTSPLTVEWRA >3QXA_3|Chains E[auth C], F|HLA class II histocompatibility antigen gamma chain peptide|Homo sapiens (9606) PVSKMRMATPLLMQA