Proposed structural models of the prothrombinase (FXa-FVa) complex

Summary, in English

Activated coagulation factor V (FVa) functions as a cofactor to factor Xa (FXa) in the conversion of prothrombin (PT) to thrombin. This essential procoagulant reaction, despite being the subject of extensive investigation, is not fully understood structurally and functionally. To elucidate the structure of the FXa-FVa complex, we have performed protein:protein (Pr:Pr) docking simulation with the pseudo-Brownian Pr:Pr docking ICM package and with the shape-complementarity Pr:Pr docking program PPD. The docking runs were carried out using a new model of full-length human FVa and the X-ray structure of human FXa. Five representative models of the FXa-FVa complex were in overall agreement with some of the available experimental data, but only one model was found to be consistent with almost all of the reported experimental results. The use of hybrid docking approach (theoretical plus experimental) is definitively important to study such large macromolecular complexes. The FXa-FVa model we have created will be instrumental for further investigation of this macromolecular system and will guide future site directed mutagenesis experiments.

• Författare: L Autin; Mårten Steen; Björn Dahlbäck; BO Villoutreix
• Avdelning/ar: Klinisk kemi, Malmö
• Publiceringsår: 2006
• Språk: Engelska
• Sidor: 440-450
• Publikation/Tidskrift/Serie: Proteins
• Volym: 63
• Issue: 3
• Länkar: http://dx.doi.org/10.1002/prot.20848
• Dokumenttyp: Artikel i tidskrift
• Förlag: John Wiley & Sons Inc.
• Ämne: Medicinal Chemistry
• Nyckelord: activated Factor X; activated Factor V; structural docking; protein-protein interaction
• Status: Published
• Forskningsgrupp: Clinical Chemistry, Malmö
• ISBN/ISSN/Övrigt: ISSN: 0887-3585