Cryo electron microscopy to determine the structure of macromolecular complexes

Area of Science:

• Structural biology
• Molecular biology
• Cellular biology

Background:

• Cryo-electron microscopy (cryo-EM) is a key technique in structural and cellular biology.
• Recent technological advancements have significantly improved its capabilities.

Purpose of the Study:

• To provide an overview of the principles of cryo-EM.
• To summarize the current state and advancements in the cryo-EM field.

Main Methods:

• Technological developments in image recording and processing software.
• Application of cryo-electron tomography for in situ visualization.

Main Results:

• Achieved near-atomic resolution for macromolecular assemblies.
• Reached subnanometre resolution for visualizing cellular components and molecular machines in situ.
• Enabled structural determination comparable to X-ray crystallography and NMR spectroscopy.

Conclusions:

• Cryo-EM is a versatile technique with broad applications in biological research.
• Technological progress has expanded the scope and resolution of cryo-EM, addressing complex biological questions.