>3S4S_1|Chains A, E[auth D]|HLA class II histocompatibility antigen, DR alpha chain|Homo sapiens (9606)
IKEEHVIIQAEFYLNPDQSGEFMFDFDGDEIFHVDMAKKETVWRLEEFGRFASFEAQGALANIAVDKANLEIMTKRSNYTPITNVPPEVTVLTNSPVELREPNVLICFIDKFTPPVVNVTWLRNGKPVTTGVSETVFLPREDHLFRKFHYLPFLPSTEDVYDCRVEHWGLDEPLLKQWEFDA
>3S4S_2|Chains B, F[auth E]|HLA class II histocompatibility antigen, DRB1-1 beta chain|Homo sapiens (9606)
MGDTRPRFLWQLKFECHFFNGTERVRLLERCIYNQEESVRFDSDVGEYRAVTELGRPDAEYWNSQKDLLEQRRAAVDTYCRHNYGVGESFTVQRRVEPKVTVYPSKTQPLQHHNLLVCSVSGFYPGSIEVRWFRNGQEEKAGVVSTGLIQNGDWTFQTLVMLETVPRSGEVYTCQVEHPSVTSPLTVEWRARS
>3S4S_3|Chains C, G[auth F]|Hemagglutinin peptide|Influenza A virus (83928)
PKYVKQNTLKLAT
>3S4S_4|Chains D[auth G], H|T-cell surface glycoprotein CD4|Homo sapiens (9606)
DLGSKKVVLGKKGDTVELTCTASQKKSIQFHWKNSNQIKILGNYGSFLWKGPSKLNDRADSRRSLWDQGNFPLIIKNLKIEDSDTYICEVEDQKEEVQLLVFGLTANSDTHLLQGQSLTLTLESPPGSSPSVQCRSPRGKNIQGGKTLSVSQLELQDSGTWTCTVLQNQKKVEFKIDIVVLAAAAHHHHHH