Factor Va alternative conformation reconstruction using atomic force microscopy

Rui C. Chaves, Selma Dahmane, Michael Odorico, Gerry A. F. Nicolaes, Jean-Luc Pellequer*

*Corresponding author for this work

Research output: Contribution to journalArticleAcademicpeer-review

12 Citations (Web of Science)


Protein conformational variability (or dynamics) for large macromolecules and its implication for their biological function attracts more and more attention. Collective motions of domains increase the ability of a protein to bind to partner molecules. Using atomic force microscopy (AFM) topographic images, it is possible to take snapshots of large multi-component macromolecules at the single molecule level and to reconstruct complete molecular conformations. Here, we report the application of a reconstruction protocol, named AFM-assembly, to characterise the conformational variability of the two C domains of human coagulation factor Va (FVa). Using AFM topographic surfaces obtained in liquid environment, it is shown that the angle between Cl and C2 domains of FVa can vary between 40 degrees and 166 degrees. Such dynamical variation in Cl and C2 domain arrangement may have important implications regarding the binding of FVa to phospholipid membranes.
Original languageEnglish
Pages (from-to)1167-1173
JournalThrombosis and Haemostasis
Issue number6
Publication statusPublished - Dec 2014


  • Coagulation factors
  • imaging
  • phospholipids
  • protein structure / folding
  • atomic force microscopy

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