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Local refinement structure of the N-domain of full-length, monomeric, soluble somatic angiotensin I-converting enzyme
ELECTRON MICROSCOPY
Refinement
RMS Deviations
Key
Refinement Restraint Deviation
f_dihedral_angle_d
13.5107
f_angle_d
0.9608
f_chiral_restr
0.0528
f_plane_restr
0.0092
f_bond_d
0.0078
Sample
Local refinement of the N-domain of full-length, soluble, monomeric somatic angiotensin I-converting enzyme
Specimen Preparation
Sample Aggregation State
PARTICLE
Vitrification Instrument
FEI VITROBOT MARK IV
Cryogen Name
ETHANE
Sample Vitrification Details
Diluted protein (in buffer containing zinc chloride and sodium chloride) was incubated on ice for 30 minutes after which it was applied to the grid, i ...
Diluted protein (in buffer containing zinc chloride and sodium chloride) was incubated on ice for 30 minutes after which it was applied to the grid, incubated for 30 seconds, and blotted for 3 seconds before plunging
3D Reconstruction
Reconstruction Method
SINGLE PARTICLE
Number of Particles
43774
Reported Resolution (Å)
3.72
Resolution Method
FSC 0.143 CUT-OFF
Other Details
Local refinement with a mask around the N-domain
Refinement Type
Symmetry Type
POINT
Point Symmetry
C1
Map-Model Fitting and Refinement
Id
1
Refinement Space
REAL
Refinement Protocol
FLEXIBLE FIT
Refinement Target
Correlation coefficient
Overall B Value
Fitting Procedure
Details
Data Acquisition
Detector Type
GATAN K3 (6k x 4k)
Electron Dose (electrons/Å**2)
43
Imaging Experiment
1
Date of Experiment
Temperature (Kelvin)
Microscope Model
FEI TITAN KRIOS
Minimum Defocus (nm)
1800
Maximum Defocus (nm)
3000
Minimum Tilt Angle (degrees)
Maximum Tilt Angle (degrees)
Nominal CS
2.7
Imaging Mode
BRIGHT FIELD
Specimen Holder Model
FEI TITAN KRIOS AUTOGRID HOLDER
Nominal Magnification
81000
Calibrated Magnification
Source
FIELD EMISSION GUN
Acceleration Voltage (kV)
300
Imaging Details
EM Software
Task
Software Package
Version
PARTICLE SELECTION
Topaz
0.2.5
IMAGE ACQUISITION
EPU
CTF CORRECTION
cryoSPARC
3.2
MODEL FITTING
ISOLDE
1.2.0
MODEL REFINEMENT
PHENIX
1.19.2
INITIAL EULER ASSIGNMENT
cryoSPARC
3.2
FINAL EULER ASSIGNMENT
cryoSPARC
3.2
CLASSIFICATION
RELION
3.1
RECONSTRUCTION
cryoSPARC
3.2
Image Processing
CTF Correction Type
CTF Correction Details
Number of Particles Selected
Particle Selection Details
PHASE FLIPPING AND AMPLITUDE CORRECTION
cryoSPARC patch-based CTF estimation
1727045
Topaz-denoising was performed on all curated micrographs, a Topaz model trained on this dataset, and used for picking