7OA6

Pseudo-atomic model for Hsp26 residues 63 to 214. Please be advised that the target map is not of sufficient resolution to unambiguously position backbone or side chain atoms. This model represents a likely fit.


ELECTRON MICROSCOPY
Sample
Top two rings (16 subunits) of a 40mer complex of Hsp26 mutant S207E. (use 0.487 as threshold to visualise)
Specimen Preparation
Sample Aggregation StatePARTICLE
Vitrification InstrumentFEI VITROBOT MARK IV
Cryogen NameETHANE-PROPANE
Sample Vitrification Details
3D Reconstruction
Reconstruction MethodSINGLE PARTICLE
Number of Particles375385
Reported Resolution (Å)7.8
Resolution MethodFSC 0.143 CUT-OFF
Other Detailssharpened map
Refinement Type
Symmetry TypePOINT
Point SymmetryC4
Map-Model Fitting and Refinement
Id1
Refinement SpaceREAL
Refinement ProtocolFLEXIBLE FIT
Refinement TargetCorrelation coefficient
Overall B Value
Fitting Procedure
DetailsHomology model generated with ITASSER with 1GME as template. Fitted with Chimera and flexibly fitted with NAMD. Residues 63 to 214 present in the mode ...Homology model generated with ITASSER with 1GME as template. Fitted with Chimera and flexibly fitted with NAMD. Residues 63 to 214 present in the model.
Data Acquisition
Detector TypeGATAN K2 SUMMIT (4k x 4k)
Electron Dose (electrons/Å**2)45
Imaging Experiment1
Date of Experiment
Temperature (Kelvin)
Microscope ModelFEI TITAN KRIOS
Minimum Defocus (nm)600
Maximum Defocus (nm)2800
Minimum Tilt Angle (degrees)
Maximum Tilt Angle (degrees)
Nominal CS2.7
Imaging ModeBRIGHT FIELD
Specimen Holder ModelFEI TITAN KRIOS AUTOGRID HOLDER
Nominal Magnification105000
Calibrated Magnification
SourceFIELD EMISSION GUN
Acceleration Voltage (kV)300
Imaging Details
EM Software
TaskSoftware PackageVersion
IMAGE ACQUISITIONSerialEM
CTF CORRECTIONGctf
MODEL FITTINGUCSF Chimera
MODEL REFINEMENTNAMD
INITIAL EULER ASSIGNMENTcryoSPARC
FINAL EULER ASSIGNMENTcryoSPARC
RECONSTRUCTIONcryoSPARC
Image Processing
CTF Correction TypeCTF Correction DetailsNumber of Particles SelectedParticle Selection Details
PHASE FLIPPING AND AMPLITUDE CORRECTION688419