Are proteins ultrametric?

Understand

A simple and surprisingly accurate description of spectral diffusion in deeply frozen globular proteins is constructed directly using the concept of ultrametricity of protein dynamics.

• Earlier the similar concept has been used for successful description of ligand-rebinding kinetics of myoglobin at temperatures about of 200 K.
• Hence the ultrametricity offers a universal background for the protein dynamics in a wide range of scales of protein motions.