Selection of 1320 K2 micrographs based on specimen coverage, ice quality, and minimal drift. The same micrographs were used in the paper. Movies were motion-corrected and dose-weighted using MotionCor2. 40 e-/A2 cumulative exposure, 0.75 um to 3 um defocus range. 4 images per hole were taken on Quantifoil R2/1 grids.