7JG1 | pdb_00007jg1

Dimeric Immunoglobin A (dIgA)

ELECTRON MICROSCOPY

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Refinement

RMS Deviations
Key	Refinement Restraint Deviation
f_dihedral_angle_d	11.453
f_angle_d	2.02
f_chiral_restr	0.087
f_bond_d	0.018
f_plane_restr	0.017

Sample
Secretory Immunoglobin A

Specimen Preparation
Sample Aggregation State	PARTICLE
Vitrification Instrument	FEI VITROBOT MARK IV
Cryogen Name	ETHANE
Sample Vitrification Details	Wait time - 0s Drain time - 0s Blot time - 6s Blot Force - 5

3D Reconstruction
Reconstruction Method	SINGLE PARTICLE
Number of Particles	288823
Reported Resolution (Å)	3.3
Resolution Method	FSC 0.143 CUT-OFF
Other Details
Refinement Type
Symmetry Type	POINT

Map-Model Fitting and Refinement
Id	1
Refinement Space
Refinement Protocol
Refinement Target
Overall B Value
Fitting Procedure
Details

Data Acquisition
Detector Type	GATAN K3 BIOQUANTUM (6k x 4k)
Electron Dose (electrons/Å**2)	60

Imaging Experiment	1
Date of Experiment
Temperature (Kelvin)
Microscope Model	FEI TITAN KRIOS
Minimum Defocus (nm)
Maximum Defocus (nm)
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	105000
Calibrated Magnification	59808
Source	FIELD EMISSION GUN
Acceleration Voltage (kV)	300
Imaging Details

EM Software
Task	Software Package	Version
IMAGE ACQUISITION	SerialEM	3.7
CTF CORRECTION	cryoSPARC	2.12
INITIAL EULER ASSIGNMENT	cryoSPARC	2.12
FINAL EULER ASSIGNMENT	cryoSPARC	2.12
RECONSTRUCTION	cryoSPARC	2.12
MODEL REFINEMENT	PHENIX

Image Processing
CTF Correction Type	CTF Correction Details	Number of Particles Selected	Particle Selection Details
PHASE FLIPPING AND AMPLITUDE CORRECTION		1808799