Access the Inaccessible with EPR spectroscopy – a powerful tool for probing protein dynamics
What is Electron Paramagnetic Resonance (EPR) Spectroscopy?
EPR is a biophysical ruler that uses paramagnetic spin labels to measure nanoscale distance distributions within or between biomolecules. The paramagnetic spin labels have no extraneous background signals, making EPR a highly sensitive and unambiguous technique. Additionally, EPR is not limited by size, enabling the study of proteins too large for NMR, and too small for Cryo-EM. EPR is an ensemble technique that measures the breadth of present conformations and provides access to conformational equilibria, dynamics measurements, and intrinsically flexible regions.