6JCW

Cryo-EM Structure of Sulfolobus solfataricus ketol-acid reductoisomerase (Sso-KARI) with Mg2+ at pH8.5


ELECTRON MICROSCOPY
Sample
Sulfolobus solfataricus ketol-acid reductoisomerase (Sso-KARI) Dodecamer in complex with Mg2+ at pH8.5
Specimen Preparation
Sample Aggregation StatePARTICLE
Vitrification InstrumentFEI VITROBOT MARK IV
Cryogen NameETHANE
Sample Vitrification Details
3D Reconstruction
Reconstruction MethodSINGLE PARTICLE
Number of Particles43916
Reported Resolution (Å)3.04
Resolution MethodFSC 0.143 CUT-OFF
Other Details
Refinement Type
Symmetry TypePOINT
Point SymmetryC1
Map-Model Fitting and Refinement
Id1 (6JCV)
Refinement SpaceREAL
Refinement ProtocolRIGID BODY FIT
Refinement Target
Overall B Value117.95
Fitting Procedure
Details
Data Acquisition
Detector TypeFEI FALCON II (4k x 4k)
Electron Dose (electrons/Å**2)0.58
Imaging Experiment1
Date of Experiment
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 Model
Nominal Magnification
Calibrated Magnification
SourceFIELD EMISSION GUN
Acceleration Voltage (kV)300
Imaging Details
EM Software
TaskSoftware PackageVersion
PARTICLE SELECTIONcisTEM1.0.0-beta
CTF CORRECTIONcisTEM1.0.0-beta
MODEL FITTINGUCSF Chimera1.13.1
MODEL FITTINGCoot0.8.9.1
INITIAL EULER ASSIGNMENTcisTEM1.0.0-beta
FINAL EULER ASSIGNMENTcisTEM1.0.0-beta
CLASSIFICATIONcisTEM1.0.0-beta
RECONSTRUCTIONcisTEM1.0.0-beta
MODEL REFINEMENTPHENIXdev-3339
Image Processing
CTF Correction TypeCTF Correction DetailsNumber of Particles SelectedParticle Selection Details
PHASE FLIPPING ONLY