In vitro prothrombin synthesis from a purified precursor protein: III. Preparation of an acid-soluble substrate for vitamin K-dependent carboxylase by limited proteolysis of bovine descarboxyprothrombin

  • B.A.M. Soute*
  • , C. Vermeer
  • , M. De Metz
  • , H.C. Hemker
  • , H.R. Lijnen
  • *Corresponding author for this work

    Research output: Contribution to journalArticleAcademicpeer-review

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    Abstract

    Bovine descarboxyprothrombin and descarboxyfragment-1 can be used as substrates for rat and bovine vitamin K-dependent carboxylase. In both enzyme systems, these substrates have a high Km (0.3-0.4 mM). A better substrate (Km = 0.001-0.003 mM) was prepared from bovine descarboxyprothrombin by limited proteolysis with subtilisin Carlsberg. This substrate is called Fragment-Su and is composed of the amino acid 13-29 of descarboxyprothrombin.
    Original languageEnglish
    Pages (from-to)101-107
    Number of pages7
    JournalBiochimica et Biophysica Acta-general Subjects
    Volume676
    Issue number1
    DOIs
    Publication statusPublished - 5 Aug 1981

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