1PK4: Crystal And Molecular Structure Of Human Plasminogen Kringle 4 Refined At 1.9-Angstroms Resolution
reference: Crystal and molecular structure of human plasminogen kringle 4 refined at 1.9-A resolution., Mulichak AM, Tulinsky A, Ravichandran KG, Biochemistry 1991 Oct 29;30(43):10576-88. PMID: 1657148

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