9WTW | pdb_00009wtw

Amyloid-beta 40 Flemish (A21G) mutant Filaments from Human Brain

ELECTRON MICROSCOPY

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Refinement

RMS Deviations
Key	Refinement Restraint Deviation
r_long_range_B_refined	20.126
r_long_range_B_other	20.048
r_scangle_other	16.291
r_dihedral_angle_3_deg	11.233
r_scbond_it	9.901
r_scbond_other	9.885
r_dihedral_angle_1_deg	7.074
r_mcangle_other	7.045
r_mcangle_it	7.021
r_mcbond_it	4.471
r_mcbond_other	4.455
r_dihedral_angle_2_deg	1.63
r_angle_refined_deg	1.467
r_angle_other_deg	0.576
r_chiral_restr	0.08
r_bond_refined_d	0.007
r_gen_planes_refined	0.007
r_gen_planes_other	0.001
r_bond_other_d
r_dihedral_angle_4_deg
r_nbd_refined
r_nbd_other
r_nbtor_refined
r_nbtor_other
r_xyhbond_nbd_refined
r_xyhbond_nbd_other
r_metal_ion_refined
r_metal_ion_other
r_symmetry_vdw_refined
r_symmetry_vdw_other
r_symmetry_hbond_refined
r_symmetry_hbond_other
r_symmetry_metal_ion_refined
r_symmetry_metal_ion_other
r_scangle_it
r_rigid_bond_restr
r_sphericity_free
r_sphericity_bonded

Sample
Amyloid-beta 40 (A21G) Flemish filaments extracted from human brain with Alzheimer's disease

Specimen Preparation
Sample Aggregation State	FILAMENT
Vitrification Instrument	FEI VITROBOT MARK IV
Cryogen Name	ETHANE
Sample Vitrification Details

3D Reconstruction
Reconstruction Method	HELICAL
Number of Particles	38206
Reported Resolution (Å)	1.98
Resolution Method	FSC 0.143 CUT-OFF
Other Details
Refinement Type
Symmetry Type	HELICAL
Axial Symmetry	C2
Axial Rise	4.882
Angular Rotation	-1.817

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

Data Acquisition
Detector Type	FEI FALCON IV (4k x 4k)
Electron Dose (electrons/Å**2)	40

Imaging Experiment	1
Date of Experiment
Temperature (Kelvin)
Microscope Model	TFS KRIOS
Minimum Defocus (nm)	800
Maximum Defocus (nm)	2000
Minimum Tilt Angle (degrees)
Maximum Tilt Angle (degrees)
Nominal CS
Imaging Mode	BRIGHT FIELD
Specimen Holder Model
Nominal Magnification	130000
Calibrated Magnification
Source	FIELD EMISSION GUN
Acceleration Voltage (kV)	300
Imaging Details

EM Software
Task	Software Package	Version
PARTICLE SELECTION	RELION	5.0
RECONSTRUCTION	RELION	5.0

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