2022-08-10 REL RCSB RCSB RCSB 2022-04-27 2022-08-10 2022-08-10 2022-08-10 Max Planck Society Germany Cryo-EM subtomogram average of IFT-A in anterograde IFT trains at 23 Angstrom resolution (Chlamydomonas reinhardtii) Jordan MA Pigino G McCafferty CL Papoulas O Jordan MA Hoogerbrugge G Nichols C Pigino G Taylor DW Wallingford JB Marcotte EM Integrative modeling reveals the molecular architecture of the Intraflagellar Transport A (IFT-A) complex Biorxiv US 2022 doi:10.1101/2022.07.05.498886 EMD-26791 associated EM volume IFT-A complex comprised of IFT43, IFT121, IFT122, IFT139, IFT140, and IFT144 IFT-A complex comprised of IFT43, IFT121, IFT122, IFT139, IFT140, and IFT144 0
Cryo-ET subtomogram averaging of an IFT-A complex, as observed in situ in the context of an anterograde intraflagellar transport (IFT) train in intact Chlamydomonas flagella
Chlamydomonas reinhardtii cilia subtomogramAveraging cell 7.2 Quantifoil R3.5/1 GOLD 200 CARBON HOLEY GLOW DISCHARGE ETHANE 80 291.15 LEICA EM GP
Fresh liquid cell cultures of 300 mL were grown for three to four days in TAP (Tris-acetate-phosphate) medium at 22 degrees C under a light-dark cycle with constant aeration. 3 microL undiluted Chlamydomonas cells were applied to the grid and mixed with 1 microL 10 nm colloidal gold particles (BBI solutions)
 FEI TITAN FLOOD BEAM BRIGHT FIELD FIELD EMISSION GUN 300 50.0 2.7 3.0 6.0 30000.0 GATAN 626 SINGLE TILT LIQUID NITROGEN CRYO TRANSFER HOLDER NITROGEN GIF Quantum LS 20
Images were recorded with an energy filter (GIF, Gatan image filter). Digital Micrograph software (Gatan) was used to tune the GIF, and SerialEM software was employed for the automated acquisition of tomographic tilt series in low-dose mode.
 GATAN K2 SUMMIT (4k x 4k) SUPER-RESOLUTION 1-10 34 2.0 1.85 1 C1 23.0 FSC 0.5 CUT-OFF PEET 9350 96 9350 manual picking IMOD
bin6 tomograms were filtered with NAD (non-linear anisotropic diffusion) in IMOD to increase contrast and facilitate particle picking
 IMOD
CTF curves were estimated with CTFPLOTTER and the data were corrected by phase-flipping with CTFPHASEFLIP, both implemented in IMOD.
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