>4EP3_1|Chain A|protease, tethered dimer|HIV-1 M:B_ARV2/SF2 (11685) PQITLWKRPLVTIRIGGQLKEALLNTGADDTVLEEMNLPGKWKPKMIGGIGGFIKVRQYDQIPVEILGHKAIGTVLVGPTPVNIIGRNLLTQIGMTLNFGGSSGPQITLWKRPLVTIRIGGQLKEALLNTGADDTVLEEMNLPGKWKPKMIGGIGGFIKVRQYDQIPVEILGHKAIGTVLVGPTPVNIIGRNLLTQIGMTLNF >4EP3_2|Chain B[auth E]|substrate CA-p2|Human immunodeficiency virus 1 (11676) KARVLAEAM