The Glycerol Dilemma: The Tradeoff Between Stability and Contrast in Cryo-EM

Glycerol can help protect protein samples during freezing and storage, but it can also reduce image contrast in cryo-electron microscopy. How much glycerol can a cryo-EM sample tolerate before map quality and resolution begin to suffer?

Evaluating Glycerol in Cryo-EM Samples

This white paper examines that tradeoff using three protein samples that differ in molecular weight and symmetry. Each sample was analyzed at 0%, 5%, and 10% glycerol using standardized grid preparation, data collection, and processing workflows. The side-by-side study helps separate glycerol-related effects from differences introduced by sample handling or image processing.

What You’ll Learn in the White Paper

• How glycerol affects contrast, particle alignment, and 3D reconstruction
• Why protein size and symmetry can influence glycerol tolerance
• What the results suggest for planning initial cryo-EM experiments

The findings offer a practical starting point for researchers who cannot fully remove glycerol without compromising sample stability. Download the white paper to review the comparative maps, resolution data, and implications for cryo-EM sample preparation.