7ZZQ | pdb_00007zzq

BcsH-BcsD 'beads-on-a-string' filament, local refine

ELECTRON MICROSCOPY

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Starting Model(s)

Initial Refinement Model(s)
Type	Source	Accession Code	Details
experimental model	PDB	3A8E

Sample
BcsHD 'beads-on-a-string' cis-filaments

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

3D Reconstruction
Reconstruction Method	SINGLE PARTICLE
Number of Particles	1425195
Reported Resolution (Å)	2.6
Resolution Method	FSC 0.143 CUT-OFF
Other Details
Refinement Type
Symmetry Type	POINT
Point Symmetry	C1

Map-Model Fitting and Refinement
Id	1 (3A8E)
Refinement Space	REAL
Refinement Protocol	BACKBONE TRACE
Refinement Target
Overall B Value
Fitting Procedure
Details	Model building with Coot, refinement with Phenix and Namdinator

Data Acquisition
Detector Type	GATAN K3 BIOQUANTUM (6k x 4k)
Electron Dose (electrons/Å**2)	49.9

Imaging Experiment	1
Date of Experiment
Temperature (Kelvin)
Microscope Model	FEI TITAN KRIOS
Minimum Defocus (nm)	480
Maximum Defocus (nm)	2750
Minimum Tilt Angle (degrees)
Maximum Tilt Angle (degrees)
Nominal CS	2.7
Imaging Mode	BRIGHT FIELD
Specimen Holder Model
Nominal Magnification
Calibrated Magnification
Source	FIELD EMISSION GUN
Acceleration Voltage (kV)	300
Imaging Details

EM Software
Task	Software Package	Version
CTF CORRECTION	Gctf
INITIAL EULER ASSIGNMENT	cryoSPARC
FINAL EULER ASSIGNMENT	cryoSPARC
CLASSIFICATION	cryoSPARC	3
RECONSTRUCTION	cryoSPARC	3
MODEL REFINEMENT	PHENIX

Image Processing
CTF Correction Type	CTF Correction Details	Number of Particles Selected	Particle Selection Details
PHASE FLIPPING AND AMPLITUDE CORRECTION		2849271	Autopicked particles using cryoSPARC's template picker function. The templates were generated by 2D classification and class selection on ~3000 manually particles.