Unfolding Forces of Titin and Fibronectin Domains Directly Measured by AFM

  • Matthias Rief
  • Mathias Gautel
  • Hermann E. Gaub
Part of the Advances in Experimental Medicine and Biology book series (AEMB, volume 481)


AFM-based Single Molecule Force Spectroscopy provides a new tool for probing the mechanical properties of single molecules. In this chapter we show that the unfolding forces of single protein domains can be directly measured. Unfolding forces give new insight into protein stability that cannot be deduced from thermodynamic measurements. A comparison between the unfolding forces measured in Ig domains of the muscle protein titin and those measured in fibronectin Type III domains reveals an extraordinarily high stability of titin domains.


Atomic Force Microscope Persistence Length Fibronectin Type Single Protein Domain Wormlike Chain 
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Copyright information

© Springer Science+Business Media New York 2000

Authors and Affiliations

  • Matthias Rief
    • 1
  • Mathias Gautel
    • 2
  • Hermann E. Gaub
    • 3
  1. 1.Stanford University School of MedicineStanfordUSA
  2. 2.Biological Structures DivisionEMBLHeidelbergGermany
  3. 3.Ludwig-MaximiliansUniversität MünchenGermany

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