4CY4

The Cryo-Electron Microscopy Structure of the CorA channel from Methanocaldococcus jannaschii at 21.6 Angstrom in low magnesium.


ELECTRON MICROSCOPY
Sample
CORA CHANNEL FROM METHANOCALDOCOCCUS JANNASCHII
Specimen Preparation
Sample Aggregation StatePARTICLE
Vitrification InstrumentFEI VITROBOT MARK I
Cryogen NameETHANE
Sample Vitrification DetailsLIQUID ETHANE
3D Reconstruction
Reconstruction MethodSINGLE PARTICLE
Number of Particles44064
Reported Resolution (Å)21.6
Resolution Method
Other DetailsTHE HIGH-RES MJCORA PDB 4EV6 STRUCTURE WAS DOCKED AS AN UNMODIFIED RIGID BODY. THERE ARE DIFFERENCES IN THE CRYO- EM AND CRYSTAL STRUCTURE DUE TO DIFF ...THE HIGH-RES MJCORA PDB 4EV6 STRUCTURE WAS DOCKED AS AN UNMODIFIED RIGID BODY. THERE ARE DIFFERENCES IN THE CRYO- EM AND CRYSTAL STRUCTURE DUE TO DIFFERENCES IN SOLUTION CONDITIONS SPECIFICALLY MG ION CONCENTRATION. SUBMISSION BASED ON EXPERIMENTAL DATA FROM EMDB EMD-2626. (DEPOSITION ID: 12440).
Refinement Type
Symmetry TypePOINT
Point SymmetryC1
Map-Model Fitting and Refinement
Id1 (4EV6)
Refinement SpaceREAL
Refinement ProtocolRIGID BODY FIT
Refinement TargetCross-correlation coefficient
Overall B Value
Fitting Procedure
DetailsMETHOD--RIGID BODY REFINEMENT PROTOCOL--DOCKING OF X-RAY CRYSTAL STRUCTURE
Data Acquisition
Detector TypeGATAN ULTRASCAN 4000 (4k x 4k)
Electron Dose (electrons/Å**2)
Imaging Experiment1
Date of Experiment2009-06-05
Temperature (Kelvin)100
Microscope ModelFEI TECNAI F20
Minimum Defocus (nm)3300
Maximum Defocus (nm)4800
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)200
Imaging DetailsLOW DOSE MODE
EM Software
TaskSoftware PackageVersion
MODEL FITTINGUCSF Chimera
RECONSTRUCTIONEMAN
Image Processing
CTF Correction TypeCTF Correction DetailsNumber of Particles SelectedParticle Selection Details
WITH REFERENCE TO X-RAY SCATTERING CURVE