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  • Title: [Affinity sorbents with tripeptide morpholine ligands for isolation of proteases].
    Author: Kuznetsova AV, Rudenskaia GN, Bogacheva AM, Voiushina TL, Stepanov VM.
    Journal: Bioorg Khim; 1997 Nov; 23(11):868-76. PubMed ID: 9518426.
    Abstract:
    New affine sorbents were synthesized involving tripeptide morpholides H-Ala-Ala-Leu-Mrp and H-D-Ala-Leu-Arg-Mrp as ligands that mimic substrates of subtilisin-like proteases and kallikrein, respectively. These were used for the isolation and purification of several proteases: trypsin, pepsin, alpha-chymotrypsin, thrombin, kallikrein, and termitase and were also efficient in the isolation of proteolytic enzymes from complex mixtures, such as the urine of children suffering from glomerulonephritis, hepatopancreas of Kamchatka crab, and dandelion roots. The ligands are competitive inhibitors of a number of proteases, and therefore, they were supposed to interact with the substrate binding sites in these enzymes.
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