6BF6

Cryo-EM structure of human insulin degrading enzyme


ELECTRON MICROSCOPY

Refinement

RMS Deviations
KeyRefinement Restraint Deviation
f_dihedral_angle_d8.28
f_angle_d1.166
f_chiral_restr0.063
f_plane_restr0.009
f_bond_d0.007
Sample
Insulin degrading enzyme
Specimen Preparation
Sample Aggregation StatePARTICLE
Vitrification InstrumentHOMEMADE PLUNGER
Cryogen NameETHANE
Sample Vitrification DetailsThe cryo grids were made using Spotiton
3D Reconstruction
Reconstruction MethodSINGLE PARTICLE
Number of Particles16944
Reported Resolution (Å)6.5
Resolution MethodFSC 0.143 CUT-OFF
Other Details
Refinement Type
Symmetry TypePOINT
Map-Model Fitting and Refinement
Id1
Refinement SpaceREAL
Refinement ProtocolFLEXIBLE FIT
Refinement Target
Overall B Value92
Fitting Procedure
Details
Data Acquisition
Detector TypeGATAN K2 SUMMIT (4k x 4k)GATAN K2 SUMMIT (4k x 4k)
Electron Dose (electrons/Å**2)7.96.8
Imaging Experiment1
Date of Experiment
Temperature (Kelvin)
Microscope ModelFEI TITAN KRIOS
Minimum Defocus (nm)940
Maximum Defocus (nm)2200
Minimum Tilt Angle (degrees)
Maximum Tilt Angle (degrees)
Nominal CS2.7
Imaging ModeBRIGHT FIELD
Specimen Holder ModelFEI TITAN KRIOS AUTOGRID HOLDER
Nominal Magnification22500
Calibrated Magnification46598
SourceFIELD EMISSION GUN
Acceleration Voltage (kV)300
Imaging DetailsThe image was collected at 20-50 degree tilt
EM Software
TaskSoftware PackageVersion
IMAGE ACQUISITIONLeginon3.3
CTF CORRECTIONGctfGctf-v0.50_sm_30_cu7.5_x86_64
MODEL FITTINGCootCoot 0.8.9_pre
MODEL FITTINGUCSF ChimeraChimera 1.11.2
MODEL REFINEMENTPHENIXPhenix-1.12-2829
INITIAL EULER ASSIGNMENTRELION2.0
FINAL EULER ASSIGNMENTRELION2.0
CLASSIFICATIONRELION2.0
RECONSTRUCTIONRELION2.1
Image Processing
CTF Correction TypeCTF Correction DetailsNumber of Particles SelectedParticle Selection Details
PHASE FLIPPING AND AMPLITUDE CORRECTION762283