1IVP:
reference: The crystallographic structure of the protease from human immunodeficiency virus type 2 with two synthetic peptidic transition state analog inhibitors., Mulichak AM, Hui JO, Tomasselli AG, Heinrikson RL, Curry KA, Tomich CS, Thaisrivongs S, Sawyer TK, Watenpaugh KD, J Biol Chem 1993 Jun 25;268(18):13103-9. PMID: 8514751

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