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 12AH | pdb_000012ah

Cryo-EM structure of Nitrogenase MoFe protein from Methanosarcina acetivorans bound to the NifI inhibitor complex in C3 symmetry


ELECTRON MICROSCOPY

Starting Model(s)

Initial Refinement Model(s)
TypeSourceAccession CodeDetails
experimental modelPDB 9P1X 
Sample
Supercomplex of Nitrogenase MoFe protein from Methanosarcina acetivorans bound to the NifI inhibitor complex in C3 symmetry
Specimen Preparation
Sample Aggregation StatePARTICLE
Vitrification Instrument
Cryogen NameETHANE
Sample Vitrification Details
3D Reconstruction
Reconstruction MethodSINGLE PARTICLE
Number of Particles70378
Reported Resolution (Å)2.97
Resolution MethodFSC 0.143 CUT-OFF
Other Details
Refinement Type
Symmetry TypePOINT
Point SymmetryC3
Map-Model Fitting and Refinement
Id1 (9P1X)
Refinement Space
Refinement Protocol
Refinement Target
Overall B Value
Fitting Procedure
Details
Data Acquisition
Detector TypeFEI FALCON IV (4k x 4k)
Electron Dose (electrons/Å**2)52
Imaging Experiment1
Date of Experiment
Temperature (Kelvin)
Microscope ModelTFS GLACIOS
Minimum Defocus (nm)1000
Maximum Defocus (nm)2400
Minimum Tilt Angle (degrees)
Maximum Tilt Angle (degrees)
Nominal CS2.7
Imaging ModeBRIGHT FIELD
Specimen Holder Model
Nominal Magnification150000
Calibrated Magnification
SourceFIELD EMISSION GUN
Acceleration Voltage (kV)200
Imaging Details
EM Software
TaskSoftware PackageVersion
PARTICLE SELECTIONcryoSPARC4.7.1
RECONSTRUCTIONcryoSPARC4.7.1
MODEL REFINEMENTPHENIX1.21.2_5419
Image Processing
CTF Correction TypeCTF Correction DetailsNumber of Particles SelectedParticle Selection Details
NONE