Specific features of the temperature behavior of lysozyme diffusivity in solutions with different protein concentrations

► DLS study of lysozyme solutions shows the existence of two modes. ► The fast relaxation mode characterizes the diffusion of lysozyme molecules. ► The slow mode is associated with the existence of protein clusters in solution. ► Minimum in temperature behavior of slow mode relaxation time appears if Clys is high. ► The minimum shifts to the higher-temperature region as the protein content increases.