8Q4A

Outward-facing, open1 proteoliposome complex I at 2.6 A. Initially purified in LMNG.


ELECTRON MICROSCOPY

Starting Model(s)

Initial Refinement Model(s)
TypeSourceAccession CodeDetails
experimental modelPDB 7QSN 

Refinement

RMS Deviations
KeyRefinement Restraint Deviation
f_dihedral_angle_d12.4077
f_angle_d0.5196
f_chiral_restr0.0393
f_bond_d0.0039
f_plane_restr0.0038
Sample
Complex I from Bos taurus reconstituted into proteoliposome.
Specimen Preparation
Sample Aggregation StatePARTICLE
Vitrification InstrumentFEI VITROBOT MARK III
Cryogen NameETHANE
Sample Vitrification DetailsSample was incubated on grid for 30 s before plunge freezing
3D Reconstruction
Reconstruction MethodSINGLE PARTICLE
Number of Particles175986
Reported Resolution (Å)2.6
Resolution MethodFSC 0.143 CUT-OFF
Other Details
Refinement Type
Symmetry TypePOINT
Map-Model Fitting and Refinement
Id1 (7QSN)
Refinement SpaceREAL
Refinement ProtocolOTHER
Refinement Target
Overall B Value
Fitting Procedure
Details
Data Acquisition
Detector TypeGATAN K3 BIOQUANTUM (6k x 4k)
Electron Dose (electrons/Å**2)45.4
Imaging Experiment1
Date of Experiment
Temperature (Kelvin)
Microscope ModelFEI TITAN KRIOS
Minimum Defocus (nm)900
Maximum Defocus (nm)2300
Minimum Tilt Angle (degrees)
Maximum Tilt Angle (degrees)
Nominal CS2.7
Imaging ModeBRIGHT FIELD
Specimen Holder ModelFEI TITAN KRIOS AUTOGRID HOLDER
Nominal Magnification81000
Calibrated Magnification
SourceFIELD EMISSION GUN
Acceleration Voltage (kV)300
Imaging Details
EM Software
TaskSoftware PackageVersion
PARTICLE SELECTIONRELION4.0-beta
IMAGE ACQUISITIONEPU
CTF CORRECTIONCTFFIND4.1
MODEL FITTINGUCSF ChimeraX1.6.1
MODEL REFINEMENTPHENIX1.20.1-4487
INITIAL EULER ASSIGNMENTRELION4.0-beta
FINAL EULER ASSIGNMENTRELION4.0-beta
CLASSIFICATIONRELION4.0-beta
RECONSTRUCTIONRELION4.0-beta
Image Processing
CTF Correction TypeCTF Correction DetailsNumber of Particles SelectedParticle Selection Details
PHASE FLIPPING AND AMPLITUDE CORRECTION