1. Stepwise Unfolding of Ankyrin Repeats in a Single Protein Revealed by Atomic Force Microscopy 
Lewyn Li, Svava Wetzel, Andreas Plückthun, Julio M. Fernandez 
Biophysical Journal 
Volume 90, Issue 4, Pages L30-L32 (February 2006)
DOI: /biophysj
Copyright © 2006 The Biophysical Society Terms and Conditions

2. Figure 1
Mechanical unfolding of the ankyrin repeats in N6C with single-molecule AFM. (a) An ANK repeat protein structure containing six ANK repeats. This structure consists of the second to seventh repeats in human ankyrinR (19). (b) Representative force-extension curves for N6C. The AFM tip picked up the protein at random locations along the peptide backbone, resulting in a different number of peaks in each trace. The contour length increment, ΔLc=11.5nm, is only observed at high forces. (c) The distribution of peak forces, with N=277. (d) The distribution of ΔLc, with N=277.
Biophysical Journal  , L30-L32DOI: ( /biophysj )
Copyright © 2006 The Biophysical Society Terms and Conditions