Dynamic force spectroscopy on multiple bonds

• Verfasst von: Erdmann, Thorsten [VerfasserIn]
• Verfasst von: Schwarz, Ulrich S. [VerfasserIn]
• Titel: Dynamic force spectroscopy on multiple bonds
• Titelzusatz: experiments and model
• Verf.angabe: T. Erdmann (FOM Institute for Atomic and Molecular Physics, Kruislaan 407, 1098 SJ Amsterdam, The Netherlands), S. Pierrat and P. Nassoy (Laboratoire de Physico-Chimie Curie, Institut Curie, F-75005 Paris, France), U.S. Schwarz (University of Heidelberg, Bioquant 0013, Im Neuenheimer Feld 267, D-69120 Heidelberg, Germany)
• E-Jahr: 2007
• Jahr: 18 Dec 2007
• Umfang: 14 S.
• Teil: year:2007
• Teil: extent:14
• Fussnoten: Gesehen am 10.07.2020
• Titel Quelle: Enthalten in: De.arxiv.org
• Ort Quelle: [S.l.] : Arxiv.org, 1991
• Jahr Quelle: 2007
• Band/Heft Quelle: (2007) Artikel-Nummer 0712.3042, 14 Seiten
• Datenträger: Online-Ressource
• Sprache: eng
• Sach-SW: Condensed Matter - Soft Condensed Matter
• Sach-SW: Physics - Biological Physics
• Sach-SW: Quantitative Biology - Biomolecules
• K10plus-PPN: 1566259207

Abstract

We probe the dynamic strength of multiple biotin-streptavidin adhesion bonds under linear loading using the biomembrane force probe setup for dynamic force spectroscopy. Measured rupture force histograms are compared to results from a master equation model for the stochastic dynamics of bond rupture under load. This allows us to extract the distribution of the number of initially closed bonds. We also extract the molecular parameters of the adhesion bonds, in good agreement with earlier results from single bond experiments. Our analysis shows that the peaks in the measured histograms are not simple multiples of the single bond values, but follow from a superposition procedure which generates different peak positions.