7PAH

70S ribosome with P- and E-site tRNAs in Mycoplasma pneumoniae cells


ELECTRON MICROSCOPY
Sample
Cryo-electron tomograms of untreated Mycoplasma pneumoniae cells
Specimen Preparation
Sample Aggregation StateCELL
Vitrification InstrumentHOMEMADE PLUNGER
Cryogen NameETHANE-PROPANE
Sample Vitrification Detailsback-side blotting for 2-3 seconds before plunging using a manual plunger without an environmental chamber
3D Reconstruction
Reconstruction MethodSUBTOMOGRAM AVERAGING
Number of Particles1803
Reported Resolution (Å)9.5
Resolution MethodFSC 0.143 CUT-OFF
Other Details
Refinement Type
Symmetry TypePOINT
Point SymmetryC1
Map-Model Fitting and Refinement
Id1 (7OOC, 7OOD, 4V7C, 4V7C)
Refinement SpaceREAL
Refinement ProtocolFLEXIBLE FIT
Refinement Target
Overall B Value
Fitting Procedure
Details
Data Acquisition
Detector TypeGATAN K2 SUMMIT (4k x 4k)
Electron Dose (electrons/Å**2)3.2
Imaging Experiment1
Date of Experiment
Temperature (Kelvin)
Microscope ModelFEI TITAN KRIOS
Minimum Defocus (nm)1500
Maximum Defocus (nm)3750
Minimum Tilt Angle (degrees)
Maximum Tilt Angle (degrees)
Nominal CS2.7
Imaging ModeBRIGHT FIELD
Specimen Holder ModelFEI TITAN KRIOS AUTOGRID HOLDER
Nominal Magnification81000
Calibrated Magnification
SourceFIELD EMISSION GUN
Acceleration Voltage (kV)300
Imaging Details
EM Software
TaskSoftware PackageVersion
VOLUME SELECTIONWarp3.0.7 beta or 3.0.9
IMAGE ACQUISITIONSerialEM
CTF CORRECTIONRELION3.0.8
MODEL FITTINGPHENIX1.18
MODEL REFINEMENTPHENIX1.18
FINAL EULER ASSIGNMENTRELION3.0.8
CLASSIFICATIONRELION3.0.8
RECONSTRUCTIONRELION3.0.8
Image Processing
CTF Correction TypeCTF Correction DetailsNumber of Particles SelectedParticle Selection Details
PHASE FLIPPING AND AMPLITUDE CORRECTION