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. 2004 Dec 1;88(2):1423–1431. doi: 10.1529/biophysj.104.052746

FIGURE 4.

FIGURE 4

Elastic and dissipative response of BR. The elasticity of the extended parts of BR as well as the relaxation time and the damping coefficient corresponding to unfolding events are derived from the amplitude and phase response. (A) Fitting the elasticity curves with the derivative of the WLC model (Eq. 8) indicates the characteristic unfolding spectrum of BR to consist of purely elastic polypeptide extension. (B and C) Discrete events are observed in the damping coefficient and the relaxation time of the molecules.