Approach and method developments

Integrative approach

Understanding a process from the molecular to the cellular level requires an approach that reveals details at different scales. Our key technique cryo-​electron tomography (cryoET) resolves complexes inside intact cells, in a life-​like state, in three dimensions, and to macromolecular resolution. CryoET complemented with high-​resolution structural techniques, light microscopy and functional assays is key to establishing a profound understanding of cellular mechanisms.

scales

Cryo-electron tomography (cryoET) data collection

Recent advances in instrumentation and software developments allowed us to significantly external pagespeed-up data collection.

 

fast_tomography

Sample thinning by cryo-focused ion beam milling

CryoET is limited to samples with a diameter of well below 800 nm. In order to image thicker samples, e.g. infected eukaryotic cells, we have established a external pageworkflow using cryo-focused ion beam milling to generate lamellae that are thin enough for cryoET imaging. In collaboration with Zeiss, we developed a method for external pageautomating the generation of lamellae.

workflow
Workflow for imaging bacteria inside their host by cryoET
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