Abstract

Volta phase plate has shown great promise in single particle cryo-EM and cryo-Electron tomography due to the enhanced contrast introduced by the extra phase shift. It can resolve protein complexes less than 100KD to near-atomic resolution. But the lack of automation has hindered its wider adoption. Here we report a serialEM workflow that can automatically 1) change phase plate location, 2) condition the phase plate, and 3) perform astigmatism correction and coma-free alignment. We have used this workflow to collect a test dataset and achieve high-resolution structure determination.

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