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Title:
Molecular Structure of Unliganded Native HIV-1 gp120 trimer: Membrane region
Authors:
A.Bartesaghi,M.Borgnia,J.Liu,G.Sapiro,S.Subramaniam
Sample:
HIV-1 BaL virus
Aggregation state:
Individual structure (20 angstroms resolution)
Latest update:
2011-08-02
Summary
Experimental details
Visualization
Map information
Downloads
Sample
Sample name:
HIV-1 BaL virus
Components:
ID
Type
Name
Exp. MW (MDa)
Oligomeric details
Recombinant expression
Synthetic
Organism
GO identifier
InterPro identifier
Virus identifier
Details
1
virus
envelope glycoprotein
envelope glycoprotein
00.061.1.06.009
Experiment
Sample preparation:
pH
Sample conc.
Details
Staining
Sample support details
7.2
mg/mL
0.01 M Tris, 0.1 M NaCl, 1 mM EDTA
home-made holey carbon
Vitrification:
Cryogen name
Humidity
Temp.
Instr.
Method
Time resolved
Details
ETHANE
100%
77 K
FEI VITROBOT
Blot and plunge
ms
Vitrification instrument: Vitrobot
Imaging:
Microscope
Voltage
Illumination mode
Imaging mode
Cs
Defocus min.
Defocus max.
Nominal mag.
Calibrated mag.
Electron source
Detector
Detector distance
Astigmatism
FEI POLARA 300
200 kV
FLOOD BEAM
BRIGHT FIELD
2.2 mm
2000 nm
4000 nm
34000
FIELD EMISSION GUN
CCD
mm
Specimen holder
Holder model
Tilt min.
Tilt max.
Energy filter
Energy window
Temp.
Temp. min.
Temp. max.
Beam tilt
Electron dose
Other details
Date
Cartridge
GATAN LIQUID NITROGEN
-70°
70°
Gatan
0-20 eV
77 K
K
K
mrad
80 e/Å
2
Processing
Software:
IMOD and in-house procedures
Resolution by author:
20 Å
Resolution method:
FSC at 0.5 cut-off
Unit cell:
Fitting:
PDB
Protocol
Target crit.
Software
B value
Fitting space
PDB chain
Details
1GC1
correlation coefficient
Chimera
REAL
Automated fitting procedures