2Y9K | pdb_00002y9k

Three-dimensional model of Salmonella's needle complex at subnanometer resolution

ELECTRON MICROSCOPY

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Starting Model(s)

Initial Refinement Model(s)
Type	Source	Accession Code	Details
experimental model	PDB	3GR5

Sample
NEEDLE COMPLEX

Specimen Preparation
Sample Aggregation State	PARTICLE
Vitrification Instrument
Cryogen Name	ETHANE
Sample Vitrification Details	LIQUID ETHANE

3D Reconstruction
Reconstruction Method	SINGLE PARTICLE
Number of Particles
Reported Resolution (Å)	8.3
Resolution Method	FSC 0.5 CUT-OFF
Other Details	RESOLUTION 8.3 ANGSTROM (0.5 FSC), 6.7 ANGSTROM (HALF BIT) SUBMISSION BASED ON EXPERIMENTAL DATA FROM EMDB EMD-1871. (DEPOSITION ID: 7820).
Refinement Type
Symmetry Type	POINT
Point Symmetry	C15

Map-Model Fitting and Refinement
Id	1 (3GR5)
Refinement Space	REAL
Refinement Protocol	RIGID BODY FIT
Refinement Target	Cross-correlation coefficient
Overall B Value
Fitting Procedure
Details	METHOD--RIGID BODY FITTING

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

Imaging Experiment	1
Date of Experiment
Temperature (Kelvin)
Microscope Model	FEI POLARA 300
Minimum Defocus (nm)	1000
Maximum Defocus (nm)	2500
Minimum Tilt Angle (degrees)
Maximum Tilt Angle (degrees)
Nominal CS	2
Imaging Mode	BRIGHT FIELD
Specimen Holder Model
Nominal Magnification	93000
Calibrated Magnification
Source	FIELD EMISSION GUN
Acceleration Voltage (kV)	300
Imaging Details	ACUAL MAGNIFICATION AT CCD 112968, CAMERA PIXEL SIZE 15UM, 1.33 ANGSTROM PER PIXEL, DATA COLLECTED SEMI- AUTOMATICALLY USING POINT-2-POINT (DEVELOPED IN-HOUSE)

EM Software
Task	Software Package	Version
MODEL FITTING	UCSF Chimera
RECONSTRUCTION	IMAGIC

Image Processing
CTF Correction Type	CTF Correction Details	Number of Particles Selected	Particle Selection Details
	EACH CCD FRAME