4CC8
Pre-fusion structure of trimeric HIV-1 envelope glycoprotein determined by cryo-electron microscopy
ELECTRON MICROSCOPY
Sample |
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COMPLEX OF KNH1144 SOSIP GP140 TRIMER WITH VRC03 FAB. |
Specimen Preparation | |
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Sample Aggregation State | PARTICLE |
Vitrification Instrument | FEI VITROBOT MARK IV |
Cryogen Name | ETHANE |
Sample Vitrification Details | BLOT FOR 6 SECONDS, BLOT OFFSET OF -2, PLUNGE INTO AN ETHANE SLURRY COOLED BY LIQUID NITROGEN |
3D Reconstruction | |
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Reconstruction Method | SINGLE PARTICLE |
Number of Particles | 88125 |
Reported Resolution (Å) | 6 |
Resolution Method | |
Other Details | 3SE8, CHAIN G AND CHAINS H, L FITTED AS TWO SEPARATE RIGID BODIES INTO MAP. ONLY HELIX RESIDUES 92-122 OF CHAIN B FITTED BY HAND INTO MAP. SUBMISSION ... |
Refinement Type | |
Symmetry Type | POINT |
Point Symmetry | C3 |
Map-Model Fitting and Refinement | |||||
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Id | 1 (3SE8, 3HMG) | ||||
Refinement Space | RECIPROCAL | ||||
Refinement Protocol | RIGID BODY FIT | ||||
Refinement Target | |||||
Overall B Value | |||||
Fitting Procedure | |||||
Details | REFINEMENT PROTOCOL--RIGID BODY |
Data Acquisition | |||||||||
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Detector Type | GATAN ULTRASCAN 4000 (4k x 4k) | ||||||||
Electron Dose (electrons/Å**2) | 10 |
Imaging Experiment | 1 |
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Date of Experiment | 2011-08-09 |
Temperature (Kelvin) | 80 |
Microscope Model | FEI TITAN KRIOS |
Minimum Defocus (nm) | 1500 |
Maximum Defocus (nm) | 2500 |
Minimum Tilt Angle (degrees) | |
Maximum Tilt Angle (degrees) | |
Nominal CS | 2.7 |
Imaging Mode | BRIGHT FIELD |
Specimen Holder Model | |
Nominal Magnification | 75000 |
Calibrated Magnification | |
Source | FIELD EMISSION GUN |
Acceleration Voltage (kV) | 80 |
Imaging Details |
EM Software | ||
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Task | Software Package | Version |
MODEL FITTING | UCSF Chimera | |
RECONSTRUCTION | EMAN | |
RECONSTRUCTION | FREALIGN | |
RECONSTRUCTION | IMAGIC |