>d1k1tb_ b.50.1.1 (B:) Human immunodeficiency virus type 1 protease {Human immunodeficiency virus type 1} pqitlwkrplvtikiggqlkealldtgaddtvieemslpgrwkpimiggiggfikvrqyd qiiieiaghkaigtvlvgptpsniigrnlltqigatlnf