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 4AV2 | pdb_00004av2

Single particle electron microscopy of PilQ dodecameric complexes from Neisseria meningitidis.


ELECTRON MICROSCOPY
Sample
OUTER MEMBRANE PROTEIN PILQ FROM NEISSERIA MENINGITIDIS
Specimen Preparation
Sample Aggregation StatePARTICLE
Vitrification InstrumentFEI VITROBOT MARK III
Cryogen NameETHANE
Sample Vitrification DetailsVITRIFICATION 1 -- CRYOGEN- ETHANE, HUMIDITY- 90, TEMPERATURE- 100K, INSTRUMENT- FEI VITROBOT MARK III, METHOD- BOTH SIDES OF THE GRID WERE BRIEFLY BL ...VITRIFICATION 1 -- CRYOGEN- ETHANE, HUMIDITY- 90, TEMPERATURE- 100K, INSTRUMENT- FEI VITROBOT MARK III, METHOD- BOTH SIDES OF THE GRID WERE BRIEFLY BLOTTED DRY WITH WHATMAN NO. 1 FILTER PAPER IN A HUMIDITY-CONTROLLED CHAMBER USING A VITROBOT (FEI) DEVICE (90PERCENT RELATIVE HUMIDITY), AND THE GRID WAS THEN PLUNGED INTO LIQUID ETHANE MAINTAINED AT LESS THAN 100K
3D Reconstruction
Reconstruction MethodSINGLE PARTICLE
Number of Particles25303
Reported Resolution (Å)26
Resolution Method
Other DetailsSUBMISSION BASED ON EXPERIMENTAL DATA FROM EMDB EMD-2105. (DEPOSITION ID: 10821).
Refinement Type
Symmetry TypePOINT
Point SymmetryC12
Map-Model Fitting and Refinement
Id1
Refinement SpaceRECIPROCAL
Refinement ProtocolOTHER
Refinement Target
Overall B Value
Fitting Procedure
DetailsMETHOD--LOCAL CORRELATION
Data Acquisition
Detector TypeGATAN ULTRASCAN 4000 (4k x 4k)
Electron Dose (electrons/Å**2)4
Imaging Experiment1
Date of Experiment2007-11-27
Temperature (Kelvin)97
Microscope ModelFEI TECNAI F20
Minimum Defocus (nm)1200
Maximum Defocus (nm)5100
Minimum Tilt Angle (degrees)
Maximum Tilt Angle (degrees)
Nominal CS2
Imaging ModeBRIGHT FIELD
Specimen Holder Model
Nominal Magnification33000
Calibrated Magnification33112
SourceFIELD EMISSION GUN
Acceleration Voltage (kV)200
Imaging Details
EM Software
TaskSoftware PackageVersion
RECONSTRUCTIONEMAN
Image Processing
CTF Correction TypeCTF Correction DetailsNumber of Particles SelectedParticle Selection Details
CTFFIT EACH MICROGRAPH