3J7Z

Structure of the E. coli 50S subunit with ErmCL nascent chain


ELECTRON MICROSCOPY
Sample
ErmCL-stalled E. coli ribosome
Sample Components
50S subunit of ErmCL-stalled ribosome
Specimen Preparation
Sample Aggregation StatePARTICLE
Vitrification InstrumentFEI VITROBOT MARK IV
Cryogen NameETHANE
Sample Vitrification DetailsPlunged into liquid ethane (FEI VITROBOT MARK IV).
3D Reconstruction
Reconstruction MethodSINGLE PARTICLE
Number of Particles269163
Reported Resolution (Å)3.9
Resolution MethodFSC 0.143 CUT-OFF
Other DetailsSince the microscopy images were processed in the absence of spatial frequencies higher than 8 A, a FSC cut-off value of 0.143 was used for average re ...Since the microscopy images were processed in the absence of spatial frequencies higher than 8 A, a FSC cut-off value of 0.143 was used for average resolution determination of 3.9 A (Scheres and Chen, 2012). (Single particle--Applied symmetry: C1)
Refinement Type
Symmetry TypePOINT
Point SymmetryC1
Map-Model Fitting and Refinement
Id1 (4KIX)
Refinement SpaceREAL
Refinement ProtocolRIGID BODY FIT
Refinement Target
Overall B Value
Fitting Procedure
DetailsREFINEMENT PROTOCOL--rigid body DETAILS--The crystal structure of the E. coli 50S subunit was fitted as a rigid body.
Data Acquisition
Detector TypeFEI FALCON II (4k x 4k)
Electron Dose (electrons/Å**2)
Imaging Experiment1
Date of Experiment2014-03-12
Temperature (Kelvin)
Microscope ModelFEI TITAN KRIOS
Minimum Defocus (nm)
Maximum Defocus (nm)
Minimum Tilt Angle (degrees)
Maximum Tilt Angle (degrees)
Nominal CS
Imaging ModeBRIGHT FIELD
Specimen Holder ModelFEI TITAN KRIOS AUTOGRID HOLDER
Nominal Magnification125085
Calibrated Magnification
SourceFIELD EMISSION GUN
Acceleration Voltage (kV)300
Imaging Details
EM Software
TaskSoftware PackageVersion
MODEL FITTINGUCSF Chimera
RECONSTRUCTIONSPIDER
Image Processing
CTF Correction TypeCTF Correction DetailsNumber of Particles SelectedParticle Selection Details
defocus groups