ELECTRON MICROSCOPY

Sample

ABC transporter from yellowfin tuna bound to inhibitor molecule DDT

Specimen Preperation
Sample Aggregation State 2D ARRAY
Vitrification Instrument SPT LABTECH CHAMELEON
Cryogen Name ETHANE
Sample Vitrification Details The grids were glow discharged for 80sec at 12mA, with a relative humidity of 82% and temperature 21.5oC maintained throughout preparation. Samples of purified protein were concentrated to 1mg/mL and ultracentrifuged in a Beckmann Optima Ultracentrifuge for 15 minutes prior to grid preparation. The sample was applied via 2-S application mode by the Chameleon, allowed to wick for 530ms via the grid nanowires, and subsequently plunged into liquid ethane maintained at -180oC.
3D Reconstruction
Reconstruction Method SINGLE PARTICLE
Number of Particles 239981
Reported Resolution (Å) 3.89
Resolution Method FSC 0.143 CUT-OFF
Other Details ?
Refinement Type
Symmetry Type POINT
Map-Model Fitting and Refinement
ID 1
Refinement Space REAL
Refinement Protocol RIGID BODY FIT
Refinement Target ?
Overall B Value 159
Fitting Procedure ?
Details ?
Data Acquisition
Detector Type FEI FALCON IV (4k x 4k)
Electron Dose (electrons/Å2) 55
Imaging Experiment
Date of Experiment ?
Temprature (Kelvin)
Microscope Model TFS KRIOS
Minimum Defocus (nm) 1000
Maximum Defocus (nm) 2000
Minimum Tilt Angle (degrees) ?
Maximum Tilt Angle (degrees) ?
Nominal CS ?
Imaging Mode BRIGHT FIELD
Specimen Holder Model ?
Nominal Magnification ?
Calibrated Magnification ?
Source FIELD EMISSION GUN
Acceleration Voltage (kV) 300
Imaging Details ?
Imaging Experiment
Task Software Package Version
PARTICLE SELECTION cryoSPARC v4.5.3
IMAGE ACQUISITION cryoSPARC v4.5.3
CTF CORRECTION cryoSPARC v4.5.3
MODEL FITTING PHENIX 1.21.1_5286
MODEL REFINEMENT PHENIX 1.21.1_5286
Image Processing
CTF Correction Type CTF Correction Details Number of Particles Selected Particle Selection Details
PHASE FLIPPING AND AMPLITUDE CORRECTION ?