ArticlebioRxiv : the preprint server for biology2023
Cryogenic Soft Landing Improves Structural Preservation of Protein Complexes.
Article in bioRxiv : the preprint server for biology, 2023. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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7 authors at 1 institution in 1 country.
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Abstract
We describe an apparatus for the cryogenic landing of particles from the ion beam of a mass spectrometer onto transmission electron microscope grids for cryo-electron microscopy. This system also allows for the controlled formation of thin films of amorphous ice on the grid surface. We demonstrate that as compared to room temperature landings, use of this cryogenic landing device greatly improves the structural preservation of deposited protein-protein complexes. Further, landing under cryogenic conditions can increase the diversity of particle orientations, allowing for improved 3D structural interpretation. Finally, we conclude that this approach allows for the direct coupling of mass spectrometry with cryo-electron microscopy.
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