9R4Y | pdb_00009r4y

15 protofilament P. falciparum GMPCPP microtubule

ELECTRON MICROSCOPY

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Starting Model(s)

Initial Refinement Model(s)
Type	Source	Accession Code	Details
in silico model	Other

Sample
15 protofilament GMPCPP microtubule

Specimen Preparation
Sample Aggregation State	FILAMENT
Vitrification Instrument
Cryogen Name	ETHANE
Sample Vitrification Details	GMPCPP microtubules were applied once or twice to a glow-discharged grid and incubated in a pre-equilibrated Vitrobot for 30 seconds at room temperature. Excess liquid was blotted off, and the grid was plunge frozen in liquid ethane.

3D Reconstruction
Reconstruction Method	HELICAL
Number of Particles	41886
Reported Resolution (Å)	2.9
Resolution Method	FSC 0.143 CUT-OFF
Other Details
Refinement Type
Symmetry Type	HELICAL
Axial Symmetry	C15
Axial Rise	8.17
Angular Rotation	-24.04

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)	48.51

Imaging Experiment	1
Date of Experiment
Temperature (Kelvin)
Microscope Model	TFS KRIOS
Minimum Defocus (nm)	700
Maximum Defocus (nm)	2200
Minimum Tilt Angle (degrees)
Maximum Tilt Angle (degrees)
Nominal CS
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	RELION	3.1
IMAGE ACQUISITION	EPU
CTF CORRECTION	CTFFIND	4.1
MODEL FITTING	Coot	0.9.8.1
MODEL FITTING	ISOLDE	1.0b3
RECONSTRUCTION	RELION	3.1
MODEL REFINEMENT	PHENIX	1.20.1

Image Processing
CTF Correction Type	CTF Correction Details	Number of Particles Selected	Particle Selection Details
PHASE FLIPPING AND AMPLITUDE CORRECTION		115668