8V2S

CHMP1B/IST1 dsDNA bound copolymer


ELECTRON MICROSCOPY

Starting Model(s)

Initial Refinement Model(s)
TypeSourceAccession CodeDetails
experimental modelPDB 6TZ4 
experimental modelPDB 3FRR 
Sample
CHMP1B/IST1 copolymer bound to a 60-mer oligonucleotide of ssDNA
Sample Components
Charged multivesicular body protein 1B (CHMP1B)
Increased sodium tolerance 1 (IST1)
Specimen Preparation
Sample Aggregation StateFILAMENT
Vitrification InstrumentFEI VITROBOT MARK IV
Cryogen NameETHANE
Sample Vitrification Details
3D Reconstruction
Reconstruction MethodHELICAL
Number of Particles451289
Reported Resolution (Å)2.72
Resolution MethodFSC 0.143 CUT-OFF
Other Details
Refinement Type
Symmetry TypeHELICAL
Axial SymmetryC1
Axial Rise2.72
Angular Rotation3.025
Map-Model Fitting and Refinement
Id1 (6TZ4, 3FRR)
Refinement SpaceREAL
Refinement ProtocolOTHER
Refinement Target
Overall B Value
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 GLACIOS
Minimum Defocus (nm)800
Maximum Defocus (nm)1800
Minimum Tilt Angle (degrees)
Maximum Tilt Angle (degrees)
Nominal CS
Imaging ModeBRIGHT FIELD
Specimen Holder ModelOTHER
Nominal Magnification130000
Calibrated Magnification
SourceFIELD EMISSION GUN
Acceleration Voltage (kV)200
Imaging Details
EM Software
TaskSoftware PackageVersion
PARTICLE SELECTIONcryoSPARC4.2.1
IMAGE ACQUISITIONEPU3.4
CTF CORRECTIONcryoSPARC4.2.1
MODEL FITTINGISOLDE1.6.0
MODEL REFINEMENTISOLDE1.6.0
INITIAL EULER ASSIGNMENTcryoSPARC4.2.1
FINAL EULER ASSIGNMENTcryoSPARCV4.2.1
CLASSIFICATIONcryoSPARC4.2.1
RECONSTRUCTIONcryoSPARC4.2.1
Image Processing
CTF Correction TypeCTF Correction DetailsNumber of Particles SelectedParticle Selection Details
PHASE FLIPPING AND AMPLITUDE CORRECTION