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 38YK | pdb_000038yk

Cryo-EM structure of pSTAT1 bound to importin alpha 5 (2:1 assembly)


ELECTRON MICROSCOPY

Starting Model(s)

Initial Refinement Model(s)
TypeSourceAccession CodeDetails
in silico modelAlphaFoldAF-P42224-F1 
Sample
This is a ternary complex formed through the assembly of two phosphorylated STAT1 protomers and one importin alpha 5 protomer.
Specimen Preparation
Sample Aggregation StatePARTICLE
Vitrification InstrumentFEI VITROBOT MARK IV
Cryogen NameETHANE
Sample Vitrification Details
3D Reconstruction
Reconstruction MethodSINGLE PARTICLE
Number of Particles246208
Reported Resolution (Å)3.6
Resolution MethodFSC 0.143 CUT-OFF
Other Details
Refinement Type
Symmetry TypePOINT
Point SymmetryC1
Map-Model Fitting and Refinement
Id1
Refinement SpaceREAL
Refinement ProtocolRIGID BODY FIT
Refinement TargetCross correlation
Overall B Value154
Fitting Procedure
Details
Data Acquisition
Detector TypeFEI FALCON IV (4k x 4k)
Electron Dose (electrons/Å**2)50
Imaging Experiment1
Date of Experiment
Temperature (Kelvin)
Microscope ModelTFS KRIOS
Minimum Defocus (nm)650
Maximum Defocus (nm)2500
Minimum Tilt Angle (degrees)
Maximum Tilt Angle (degrees)
Nominal CS2.7
Imaging ModeBRIGHT FIELD
Specimen Holder ModelFEI TITAN KRIOS AUTOGRID HOLDER
Nominal Magnification165000
Calibrated Magnification
SourceFIELD EMISSION GUN
Acceleration Voltage (kV)300
Imaging Details
EM Software
TaskSoftware PackageVersion
PARTICLE SELECTIONcryoSPARCv5.0.7
CTF CORRECTIONcryoSPARCv5.0.7
MODEL FITTINGUCSF ChimeraX1.12
INITIAL EULER ASSIGNMENTcryoSPARCv5.0.7
FINAL EULER ASSIGNMENTcryoSPARCv5.0.7
CLASSIFICATIONcryoSPARCv5.0.7
RECONSTRUCTIONcryoSPARCv5.0.7
MODEL REFINEMENTPHENIX"2.1_6048"
Image Processing
CTF Correction TypeCTF Correction DetailsNumber of Particles SelectedParticle Selection Details
PHASE FLIPPING AND AMPLITUDE CORRECTION2704667