>3EKP_1|Chains A, B, C, D|Protease|HIV-1 M:B_ARV2/SF2 (11685) PQITLWKRPIVTIRIGGQLKEALLDTGADDTVLEEMNLPGKWKPKMIVGIGGFVKVRQYDQIPIEICGHKAIGTVLVGPTPANIIGRNLLTQIGCTLNF