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Electron Microscopy, Strasbourg, France

Flagship Service/Technology

The center offers access for three-dimensional structure determination using cryo-electron microscopy (cryo-EM). The centre has expertise in all aspects of single particle analysis from the automated acquisition of large data sets to image analysis. 

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Instruct Centre

Service/Technology Contacts

User Guide

Access to the following instrumentation is provided: the Glacios cryo-electron microscope which allows high-resolution SPA and CET automated data collection and two Titan Krios cryo-electron microscopes with CMOS high-sensitivity direct electron detector camera. The Tecnai F20 is equipped with a FEG operated at 100keV or 200keV.

Titan Krios cryo electron microscopes

The Titan Krios is the latest generation electron microscope with capacities for high-resolution data collection for both Cryo Electron Tomography (CET) experiments and Single Particle Analysis (SPA) with automated data collection. The electron source is a Field Emission Gun (FEG) that can be operated at 80keV, 100keV, 200keV or 300keV. An automatic loading mechanism allows mounting twelve grids at a time.

The Titan 1 microscope is equipped with CMOS (FEI FALCON3 4K*4K and GATAN K3) high-sensitivity direct electron detector cameras, corrector CS, phase plate and GIF.

The Titan 2  microscope (G4) is equipped with Selectris X energy filters and Falcon 4i camera.

The Glacios cryo electron microscope

The Glacios cryo-electron microscope allows high-resolution SPA and CET automated data collection. Its FEG is usually tuned to 200keV. An automatic loading mechanism allows mounting twelve grids at a time. This microscope is equipped with two digital cameras: FEI Ceta-D and the direct electron detector GATAN K2

The Tecnai F20

The Tecnai F20 is equipped with a FEG operated at 100keV or 200keV. Grids are mounted one at a time using a Gatan side-entry cryo-holder. This microscope is equipped with one digital camera (GATAN CCD 2K*2K "US10001"), it is used to collect data for cryo-SPA or room temperature electron tomography using a Fischion side-entry holder. Cryo-EM grids are flash-frozen in a temperature and humidity controlled environment using a Vitrobot system (FEI).

All the microscopes are equipped with digital cameras, images can be recorded as films and scan them with a high-resolution Heidelberger Druckmaschinen drum scanner (5 micron pixel size). When asking access for Titan or Glacios, please add to your proposal preliminary image of the sample in cryo condition.