Simulated and experimental EPR spectra. Simulated and experimental EPR spectra for various positions in the vinculin tail domain. Residue positions of the spin labeled sites are indicated. EPR experimental data is not available for positions 909, 927, 934, 972 and 1024. Simulated EPR spectra were calculated based on MD simulations in vacuo (red) and in aquo (black). Red and gray colored bars mark spectral region indicative for an immobile or mobile spin label side chain. * courtesy: Christoph Abe and Wolfgang Ziegler.