Skip to main content

 9CG7 | pdb_00009cg7

70S initiation complex (tRNA-fMet M1 + AUG start codon)


ELECTRON MICROSCOPY

Starting Model(s)

Initial Refinement Model(s)
TypeSourceAccession CodeDetails
experimental modelPDB 7K00 
Sample
70S initiation complex (tRNA-fMet M1 + AUG start codon)
Specimen Preparation
Sample Aggregation StatePARTICLE
Vitrification InstrumentFEI VITROBOT MARK IV
Cryogen NameETHANE
Sample Vitrification Details
3D Reconstruction
Reconstruction MethodSINGLE PARTICLE
Number of Particles101538
Reported Resolution (Å)2.75
Resolution MethodFSC 0.143 CUT-OFF
Other DetailscryoSPARC homogeneous 3D refinement
Refinement Type
Symmetry TypePOINT
Point SymmetryC1
Map-Model Fitting and Refinement
Id1 (7K00)
Refinement SpaceREAL
Refinement ProtocolFLEXIBLE FIT
Refinement Target
Overall B Value64.3
Fitting Procedure
DetailsStarting model was fit into the unsharpened 3D reconstruction in UCSF ChimeraX before performing real-space refinement with the sharpened map in PHENI ...Starting model was fit into the unsharpened 3D reconstruction in UCSF ChimeraX before performing real-space refinement with the sharpened map in PHENIX
Data Acquisition
Detector TypeGATAN K3 BIOQUANTUM (6k x 4k)
Electron Dose (electrons/Å**2)58.4
Imaging Experiment1
Date of Experiment
Temperature (Kelvin)
Microscope ModelFEI TALOS ARCTICA
Minimum Defocus (nm)600
Maximum Defocus (nm)1800
Minimum Tilt Angle (degrees)
Maximum Tilt Angle (degrees)
Nominal CS2.7
Imaging ModeBRIGHT FIELD
Specimen Holder ModelFEI TITAN KRIOS AUTOGRID HOLDER
Nominal Magnification79000
Calibrated Magnification
SourceFIELD EMISSION GUN
Acceleration Voltage (kV)200
Imaging Details
EM Software
TaskSoftware PackageVersion
PARTICLE SELECTIONTopaz0.2.5
IMAGE ACQUISITIONEPU
CTF CORRECTIONcryoSPARC4.5.3
MODEL FITTINGUCSF ChimeraX1.8
INITIAL EULER ASSIGNMENTcryoSPARC4.5.3
FINAL EULER ASSIGNMENTcryoSPARC4.5.3
CLASSIFICATIONcryoSPARC4.5.3
RECONSTRUCTIONcryoSPARC4.5.3
MODEL REFINEMENTPHENIX1.20.1-4487-000
Image Processing
CTF Correction TypeCTF Correction DetailsNumber of Particles SelectedParticle Selection Details
PHASE FLIPPING AND AMPLITUDE CORRECTIONcryoSPARC patch CTF estimation492576