Thromb Haemost 2000; 83(01): 78-85
DOI: 10.1055/s-0037-1613761
Commentary
Schattauer GmbH

Structural Basis for Hemophilia A Caused by Mutations in the C Domains of Blood Coagulation Factor VIII

Authors

  • Andrew J. Gale

    1   From the Departments of Molecular and Experimental Medicine and of Vascular Biology, The Scripps Research Institute, La Jolla, CA, USA
  • Jean-Luc Pellequer

    2   Department of Molecular Biology and The Skaggs Institute for Chemical Biology, The Scripps Research Institute, La Jolla, CA, USA
  • Elizabeth D. Getzoff

    2   Department of Molecular Biology and The Skaggs Institute for Chemical Biology, The Scripps Research Institute, La Jolla, CA, USA
  • John H. Griffin

    1   From the Departments of Molecular and Experimental Medicine and of Vascular Biology, The Scripps Research Institute, La Jolla, CA, USA
Weitere Informationen

Publikationsverlauf

Received 12. Juli 1999

Accepted after revision 17. September 1999

Publikationsdatum:
06. Dezember 2017 (online)

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Summary

Three dimensional homology models for the C1 and C2 domains of factor VIII (FVIII) were generated. Each C domain formed a β-sandwich, and C1 was covalently connected to C2 in a head-to-head orientation. Of the >250 missense mutations that cause FVIII deficiency and hemophilia A, 34 are in the C domains. We used the FVIII C1-C2 model to infer the structural basis for the pathologic effects of these mutations. The mutated residues were divided into four categories: 15 conserved buried residues that affect normal packing of the hydrophobic side chains, 2 non-conserved buried residues that affect structure, 11 conserved exposed residues and 6 non-conserved exposed residues. The effects of all 34 missense mutations can be rationalized by predictable disruptions of FVIII structure while at most four mutations (S2069F, T2154I, R2209Q/G/L and E2181D) may affect residues directly involved in intermolecular interactions of FVIII/VIIIa with other coagulation factors or vWF.

* This is Manuscript number 12360-MEM from The Scripps Research Institute