>d1bx2a2 d.19.1.1 (A:2-81) MHC class II, N-terminal domains of alpha and beta chains {Human (Homo sapiens), HLA-DR2} keehviiqaefylnpdqsgefmfdfdgdeifhvdmakketvwrleefgrfasfeaqgala niavdkanleimtkrsnytp