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  • Title: The plasminogen activator inhibitor-1 binding site in the kringle-2 domain of tissue-type plasminogen activator.
    Author: Kaneko M, Mimuro J, Matsuda M, Sakata Y.
    Journal: Biochem Biophys Res Commun; 1991 Aug 15; 178(3):1160-6. PubMed ID: 1908232.
    Abstract:
    We have shown that synthetic peptides containing the amino acid sequence Asn-Arg-Arg-Leu, derived from the amino acid sequence of the inner loop of the kringle-2 domain of tissue-type plasminogen activator (tPA), inhibited complex formation between two chain tPA and plasminogen activator inhibitor-1 (PAI-1) by binding to PAI-1. This binding was reversible and was inhibited by not only tPA but also by enzymatically inactive tPA. Quantitative analyses of the interaction of PAI-1 with the peptide containing the Asn-Arg-Arg-Leu sequence indicated that the PAI-1 binding site residues in the inner loop of the kringle-2 domain and is preferentially expressed in two chain tPA.
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