A short note on the analysis of distance measurements by electron paramagnetic resonance.
In electron paramagnetic resonance (EPR) distance distributions between site-directedly attached spin labels in soft matter are obtained by measuring their dipole-dipole interaction. The analysis of these distance distributions can be misleading particularly for broad distributions, because the most probable distance deviates from the distance between the most probable label positions. The current manuscript studies this effect using numerically generated spin label positions, molecular dynamics simulations, and experimental data of a model system. An approach involving Rice distributions is proposed to overcome this problem.
Department of Chemistry, University of Konstanz, 78457 Konstanz, Germany.
Silvia
S
Domingo Köhler
Martin
M
Spitzbarth
Kay
K
Diederichs
Thomas E
TE
Exner
Malte
M
Drescher
D000465:Algorithms; D003198:Computer Simulation; D004578:Electron Spin Resonance Spectroscopy / Q000379:methods*; D008956:Models, Chemical; D013113:Spin Labels
D013113:Spin Labels