Thromb Haemost 1990; 63(02): 235-240
DOI: 10.1055/s-0038-1645201
Original Article
Schattauer GmbH Stuttgart

Expression of Functional Coagulation Factor XIII in Escherichia coli

Authors

  • P G Board

    The Human Genetics Group, John Curtin School of Medical Research, Australian National University, Canberra, Australia
  • K Pierce

    The Human Genetics Group, John Curtin School of Medical Research, Australian National University, Canberra, Australia
  • M Coggan

    The Human Genetics Group, John Curtin School of Medical Research, Australian National University, Canberra, Australia
Further Information

Publication History

Received 06 October 1989

Accepted after revision 27 December 1989

Publication Date:
02 July 2018 (online)

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Summary

Coagulation factor XIII is a zymogen that can be activated by thrombin cleavage to a transglutaminase that catalyses the formation of covalent crosslinks between fibrin chains in the final stages of the blood clotting cascade. Although circulating factor-XIII is composed of A and B subunits the catalytic activity is a property of the A subunits. In this study we have constructed a plasmid (pKKF13A) that contains a cDNA encoding the A subunit positioned downstream of a tac promoter. Escherichia coli containing this plasmid produce A subunit protein when grown in the presence of IPTG. The cloned A subunit has been partially purified and characterized. Comparison with A subunits purified from plasma showed that the cloned A subunits were of the same size, assembled as dimers, and had the same native electrophoretic mobility. The cloned A subunits expressed transglutaminase activity with putrescine, dansylcadaverine and casein as substrates, and were able to crosslink fibrin in clots formed from A subunit deficient plasma. These studies have demonstrated that functional recombinant factor XIII A subunit can be produced in E. coli and suggest that recombinant factor XIII can potentially provide a safe and inexhaustible supply for therapeutic use.