>3VTP_1|Chain A[auth C]|Transmembrane protein gp41|Human immunodeficiency virus type 1 (11686) XQQQNNLLRAIEAQQHLLQLTVWGIKQLQARILAVERYLKDQX >3VTP_2|Chain B[auth D]|Transmembrane protein gp41|Human immunodeficiency virus type 1 (11686) XMTWMEWDREINNYTSLIHSLIEESQNQQEKNEQELLX