Cryo-EM
Cryo-electron microscopy uses electron beams to image frozen biological samples at near-atomic resolution.
Cryo-electron microscopy, or cryo-EM, is a powerful technique that lets scientists see the incredibly detailed shapes of tiny biological molecules. It involves freezing a sample very quickly and then using an electron beam to capture images.
Scientists can then combine thousands of these images to create a 3D model of the molecule. This helps them understand how these molecules work, which is crucial for developing new medicines or understanding diseases. For example, researchers used cryo-EM to see the structure of a protein linked to heart disease, which could lead to new treatments.
Cryo-electron microscopy (cryo-EM) is a structural biology technique that determines the three-dimensional structure of biomolecules. Samples are rapidly frozen in a thin layer of vitreous ice, preserving their native state. An electron microscope then captures images of these frozen molecules from various angles.
Computational methods are used to align and reconstruct these 2D projection images into a high-resolution 3D density map. This map can then be used to build an atomic model of the molecule. Cryo-EM has revolutionized structural biology, enabling the study of large, complex, and flexible macromolecular assemblies that were previously intractable with X-ray crystallography.
This term is appearing because AI models like Google's AlphaFold are increasingly used to predict protein structures, complementing experimental techniques like cryo-EM. Advances in cryo-EM technology have also made it more accessible, leading to a surge in structural biology discoveries that AI can then help analyze or build upon.
- Revealing a key protein behind heart diseaseGoogle · Google DeepMind Blog ·
- Google Gemini
- Google's AI tools, including those related to Gemini, can analyze and interpret data generated by cryo-EM experiments, aiding in scientific discovery.
- Electron microscopy
- Electron microscopy is a broader category of microscopes th
- X-ray crystallography
- X-ray crystallography also determines molecular structure
The concept of using electron beams to image samples dates back to the 1930s. The specific application to biological samples in a frozen state, leading to high-resolution structures, gained significant traction and development from the late 20th century onwards, with Nobel Prizes awarded for its advancements. Source ↗
While you can't perform cryo-EM yourself, you can explore 3D models of proteins determined by this method. Visit the Protein Data Bank (PDB) website and search for a protein structure. Many entries allow you to view and rotate interactive 3D models, giving you a sense of the molecular shapes cryo-EM reveals.
The Playbook: reusable how-tos, prompts, configs and tips pulled out of the news.
- PromptRole-play a student struggling with math for AI tutor simulationSimulate a student's math struggles and uncertainty for AI tutor evaluation. · 5 min
- TemplateReusable workflow templates for healthcare teamsTeams can create and share templates for common workflows like documentation or prior authorizations. · 15 min
- TemplateTemplate for building an AI tool tailored to your workA structured approach to defining and building a custom AI tool for specific business needs. · 15 min
- TemplateEvals CSV prompt list for agent skillsA CSV file template for listing prompts used in evaluating agent skills. · 20 min
- HeuristicDouble coding agent task completion with docs linksProviding coding agents with a documentation link significantly increases their task completion rate. · 2 min
Questions people ask
- What is the main advantage of cryo-EM?
- Cryo-EM allows scientists to study large, complex, and flexible biological molecules in a near-native state, which is often difficult or impossible with other structural biology techniques.
- How does cryo-EM differ from a regular light microscope?
- Cryo-EM uses electrons instead of light, allowing for much higher magnification and resolution, enabling visualization of molecules at the atomic level, far beyond what light microscopes can achieve.
First seen on Subvolts Nov 25, 2025. Updated Sep 15, 2026. Written by an AI model from the items above and reviewed against them weekly; report an error.