Single-particle cryo-EM dataset of the glycosyltransferase ArnC from Salmonella enterica in the UDP-bound state from Talos Arctica microscope [multiple data sets in TIFF and MRC formats]
Publication:
Structural basis of undecaprenyl phosphate glycosylation leading to polymyxin resistance in Gram-negative bacteria
The dataset contains unaligned gain-corrected micrograph movies in TIFF format. Cryo-EM data were collected at the Rutgers Cryo-EM & Nanoimaging Facility using a 200 kV Talos Arctica (FEI/ThermoFisher) electron microscope equipped with a K2 Summit direct electron detector (Gatan) and a BioQuantum energy filter (Gatan) with slit width of 20 eV. Data were collected automatically in counting mode using EPU (FEI/ThermoFisher), a nominal magnification of 165,000X, a nominal pixel size of 0.818 Å/pixel, and a dose rate of 5.0344 electrons/pixel/s. Movies were recorded at 100 ms/frame for 5.3s (53 frames total), resulting in a total dose of 39.88 electrons/Å2. Nominal defocus range was -0.5 to -2.5 μm. A total of 7,925 micrographs were recorded from one grid over two days. Micrographs were gain-normalized and defect corrected. At the end of processing a calibrated pixel size of 0.82 Å/pixel was determined for this dataset, representing an 0.24% error from the nominal pixel size value.
Aligned and dose-weighted micrographs produced from the raw movies using patch motion correction in cryoSPARC. The dataset contains a subset of micrographs that have contributed particles to the final particle stack. Nominal pixel size 0.818 Å/pixel. Calibrated pixel size imposed on final reconstruction is 0.82 Å/pixel.
Final particle stack of 216,104 particles from 5556 aligned/dose-weighted micrographs corresponding to the reconstruction deposited in EMD-43812. Nominal pixel size 0.818 Å/pixel. Calibrated pixel size imposed on final reconstruction is 0.82 Å/pixel.