>3EM4_1|Chains A, B, C[auth U], D[auth V]|Protease|HIV-1 M:B_ARV2/SF2 (11685) PQITLWKRPLVTIRIGGQLKEALLDTGADDTVLEEMNLPGKWKPKMIGGLGGFIKVRQYDQIPVEICGHKVIGTVLVGPTPVNIIGRNLLTQIGCTLNF