6VPS | pdb_00006vps

Cryo-EM structure of the amyloid core of Drosophila Orb2 isolated from head

ELECTRON MICROSCOPY

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Refinement

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	32.937
r_lrange_it	17.636
r_dihedral_angle_3_deg	16.633
r_scangle_it	13.629
r_scbond_it	8.576
r_mcangle_it	8.553
r_dihedral_angle_1_deg	5.582
r_mcbond_it	5.523
r_angle_refined_deg	0.998
r_nbtor_refined	0.268
r_nbd_refined	0.153
r_chiral_restr	0.131
r_xyhbond_nbd_refined	0.106
r_bond_refined_d	0.013
r_gen_planes_refined	0.012

Sample
amyloid core of Drosophila Orb2

Specimen Preparation
Sample Aggregation State	FILAMENT
Vitrification Instrument
Cryogen Name	ETHANE
Sample Vitrification Details

3D Reconstruction
Reconstruction Method	HELICAL
Number of Particles	19509
Reported Resolution (Å)	2.6
Resolution Method	FSC 0.143 CUT-OFF
Other Details
Refinement Type
Symmetry Type	HELICAL
Axial Symmetry	C3
Axial Rise	4.75
Angular Rotation	-1.55

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

Data Acquisition
Detector Type	GATAN K2 SUMMIT (4k x 4k)
Electron Dose (electrons/Å**2)	63

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
Imaging Mode	BRIGHT FIELD
Specimen Holder Model
Nominal Magnification
Calibrated Magnification
Source	FIELD EMISSION GUN
Acceleration Voltage (kV)	300
Imaging Details

Image Processing
CTF Correction Type	CTF Correction Details	Number of Particles Selected	Particle Selection Details
NONE