Glassylike low-frequency dynamics of globular proteins

It is shown that globular proteins display a universal average structure factor accounting for their common aminoacid base. This property, linked to the construction of a random elastic network to study the low-frequency dynamics, leads to striking similarities between the physics of globular proteins and that of glassy or amorphous nanocrystals. A few consequences of this interpretation are inquired into, particularly, in connection with some of the universal properties of the low-frequency dynamics that were recently discovered for globular proteins.