1DPJ:
reference: The aspartic proteinase from Saccharomyces cerevisiae folds its own inhibitor into a helix., Li M, Phylip LH, Lees WE, Winther JR, Dunn BM, Wlodawer A, Kay J, Gustchina A, Nat Struct Biol 2000 Feb;7(2):113-7. PMID: 10655612

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